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Zhou M, Li T, Fan K, Shu Y, Liu P, Zhao H. Portable Conductometric Sensing Probe for Real-Time Monitoring Ammonia Profile in Coastal Waters. ACS Sens 2023; 8:3836-3844. [PMID: 37782772 DOI: 10.1021/acssensors.3c01354] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
An ability to real-time and continuously monitor ammonium/ammonia profiles of coastal waters over a prolonged period in a simple and maintenance-free fashion would enable economic conducting large-scale assessments, providing the needed scientific insights to better control and mitigate the impact of eutrophication on coastal ecosystems. However, this is a challenging task due to the lack of capable sensors. Here, we demonstrate the use of a membrane-based conductometric ammonia sensing probe (CASP) for real-time monitoring of ammonia levels in coastal waters. A boric acid/glycerol receiving phase is investigated and innovatively utilized to overcome the high salinity of coastal water-induced analytical errors. A calibration-free approach is used to eliminate the need for ongoing calibration, while the issues concerning practical applications, such as salinity variation, ammonia intake capability, and biofouling, are systematically investigated. The field deployment at an estuary confluence water site over a half-moon cycle period confirms that CASP is capable of continuously monitoring the ammonia profile of coastal waters in real-time with high resolution and accuracy to unveil the dynamic ammonia concentration changes over a prolonged period.
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Affiliation(s)
- Ming Zhou
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
| | - Tianling Li
- Collaborative Innovation Centre of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Joint International Research Laboratory of Climate and Environment Change, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, P. R. China
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P. R. China
| | - Kaicai Fan
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yajie Shu
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
- National Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, P. R. China
| | - Porun Liu
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
| | - Huijun Zhao
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
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2
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Li P, Li S, Yuan D, Lin K. Real-time underway measurement of ammonium in coastal and estuarine waters using an automated flow analyzer with hollow fiber membrane contactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 880:163281. [PMID: 37023803 DOI: 10.1016/j.scitotenv.2023.163281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/28/2023] [Accepted: 03/31/2023] [Indexed: 05/27/2023]
Abstract
Ammonium (NH4+) is an important parameter for aquatic ecosystems. To date, continuous and underway acquisition of NH4+ in coastal and estuarine waters has been challenged by the strongly varying salinity and complex matrices in these waters. To address these issues, a hollow fiber membrane contactor (HFMC) was constructed and incorporated in flow injection analysis (FIA) to achieve online separation/preconcentration of NH4+ in water. In the FIA-HFMC system, NH4+ in the water sample was converted into NH3 under alkaline conditions in the donor channel. The generated NH3 diffused across the membrane and was absorbed in an acid solution in the acceptor channel. The resultant NH4+ in the acceptor was then quantified based on a modified indophenol blue (IPB) method. Parameters affecting the performance of the FIA-HFMC-IPB system were evaluated and optimized. Under the optimized conditions, the proposed system exhibited a limit of detection of 0.11 μmol L-1, with relative standard deviations of 1.0-1.9 % (n = 7), and a good linear response (R2 = 0.9989) for the calibration in the field with NH4+ standards in the range of 0.40-80 μmol L-1. The proposed system was applied to a shipboard underway measurement of NH4+ in a two-day cruise in the Jiulong River Estuary-Xiamen Bay, China. A good agreement was observed between measurements from the proposed system and those from manual sampling and laboratory analysis. Both laboratory and field results demonstrated that the system was free of salinity effect and interference from organic nitrogen compounds. The system also showed excellent stability and reliability during a 16-day observation. This work suggests that the proposed FIA-HFMC-IPB system is applicable for the underway measurement of NH4+ in water, especially for estuarine and coastal waters with varying salinity and complex matrices.
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Affiliation(s)
- Peng Li
- Fujian Provincial Key Laboratory for Coast Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Songtao Li
- Fujian Provincial Key Laboratory for Coast Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Dongxing Yuan
- Fujian Provincial Key Laboratory for Coast Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Kunde Lin
- Fujian Provincial Key Laboratory for Coast Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.
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3
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Wang L, Zhou W, Zhang M, Zheng Z, Zhao S, Xing C, Jia J, Liu C. Environmental ammonia analysis based on exclusive nitrification by nitrifying biofilm screened from natural bioresource. CHEMOSPHERE 2023; 336:139221. [PMID: 37327822 DOI: 10.1016/j.chemosphere.2023.139221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/18/2023]
Abstract
Biofilm-based biological nitrification is widely used for ammonia removal, while hasn't been explored for ammonia analysis. The stumbling block is the coexist of nitrifying and heterotrophic microbes in real environment resulting in non-specific sensing. Herein, an exclusive ammonia sensing nitrifying biofilm was screened from natural bioresource, and a bioreaction-detection system for the on-line analysis of environmental ammonia based on biological nitrification was reported. The nitrifying microbes were aggregated into a nitrifying biofilm through a result-oriented bioresource enrichment strategy. The predominant nitrifying population and progressive surface reaction in the plug flow bioreactor led to the exclusive and exhaustive ammonia biodegradation for the establishment of a novel analytical method. The on-line ammonia monitoring prototype achieved complete biodegradation for determining ammonium nitrogen within 5 min and showed exceptional reliability in long-term real sample measurements without frequent calibration. This work offers a low-threshold natural screening paradigm for developing sustainable bioresource-based analytical technologies.
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Affiliation(s)
- Liang Wang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China
| | - Wuping Zhou
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China
| | - Mengchen Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China.
| | - Zehua Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China
| | - Song Zhao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China
| | - Chao Xing
- UQ Dow Center, School of Chemical Engineering, The University of Queensland, St Lucia, 4072, Australia
| | - Jianbo Jia
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China
| | - Changyu Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529000, China.
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Chen X, Zhang M, Li X, Xu J, Liang Y. Ammonium determination by merging-zone flow injection analysis and a naphthalene-based fluorescent probe. Talanta 2023; 256:124274. [PMID: 36681040 DOI: 10.1016/j.talanta.2023.124274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/12/2023] [Accepted: 01/14/2023] [Indexed: 01/17/2023]
Abstract
This paper discusses the first-time study of a naphthalene-based fluorescent probe-naphthalene-2,3-dicarboxaldehyde (NDA), in combination with merging-zone flow injection analysis for the automated fluorescence determination of ammonium. The determination was contingent on detecting the fluorescent product of NDA-SO32--NH4+, which has maximum excitation and emission wavelengths of 508 nm and 564 nm, respectively. And the possible sensing mechanism of NDA-NH4+ was proposed. The effects of the reaction parameters, including reagent concentrations, reaction flow rate, coil length, reaction temperature, and pH were optimized. Under optimal conditions, this method afforded a sampling rate of 8 h-1, a limit of detection of 0.045 μmol L-1, and RSD of 3.68% (n = 14) with 1.50 μmol L-1 ammonium, and the calibration range was 0.045-6.00 μmol L-1. Examination of the organic nitrogen interference confirmed that the method attracts minimal interference from organic nitrogen, and the stability of the NDA reagent facilitates its field application. Other exhibited advantages include low reagent consumption and high automation; the method has been utilized in the successful determination of ammonium in freshwater and rainwater. The development of NDA applications for ammonium determination also provides more options for fluorometric determination of ammonium.
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Affiliation(s)
- Xuejia Chen
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China
| | - Min Zhang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China
| | - Xuejun Li
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China
| | - Jin Xu
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
| | - Ying Liang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
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Wang D, Mao X, Liang Y, Cai Y, Tu T, Zhang S, Li T, Fang L, Zhou Y, Wang Z, Jiang Y, Ye X, Liang B. Multi-Parameter Detection of Urine Based on Electropolymerized PANI: PSS/AuNPs/SPCE. BIOSENSORS 2023; 13:272. [PMID: 36832037 PMCID: PMC9954737 DOI: 10.3390/bios13020272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
Urine analysis is widely used in clinical practice to indicate human heathy status and is important for diagnosing chronic kidney disease (CKD). Ammonium ions (NH4+), urea, and creatinine metabolites are main clinical indicators in urine analysis of CKD patients. In this paper, NH4+ selective electrodes were prepared using electropolymerized polyaniline-polystyrene sulfonate (PANI: PSS), and urea- and creatinine-sensing electrodes were prepared by modifying urease and creatinine deiminase, respectively. First, PANI: PSS was modified on the surface of an AuNPs-modified screen-printed electrode, as a NH4+-sensitive film. The experimental results showed that the detection range of the NH4+ selective electrode was 0.5~40 mM, and the sensitivity reached 192.6 mA M-1 cm-2 with good selectivity, consistency, and stability. Based on the NH4+-sensitive film, urease and creatinine deaminase were modified by enzyme immobilization technology to achieve urea and creatinine detection, respectively. Finally, we further integrated NH4+, urea, and creatinine electrodes into a paper-based device and tested real human urine samples. In summary, this multi-parameter urine testing device offers the potential for point-of-care testing of urine and benefits the efficient chronic kidney disease management.
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Affiliation(s)
- Dong Wang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Xiyu Mao
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Yitao Liang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Yu Cai
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Tingting Tu
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Shanshan Zhang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Tianyu Li
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310027, China
| | - Lu Fang
- College of Automation, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yue Zhou
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Zhaoyang Wang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Yu Jiang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Xuesong Ye
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Bo Liang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
- Binjiang Institute of Zhejiang University, Hangzhou 310053, China
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6
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Behrenfeld MJ, Bisson KM, Boss E, Gaube P, Karp-Boss L. Phytoplankton community structuring in the absence of resource-based competitive exclusion. PLoS One 2022; 17:e0274183. [PMID: 36112595 PMCID: PMC9481051 DOI: 10.1371/journal.pone.0274183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/23/2022] [Indexed: 11/23/2022] Open
Abstract
Under most natural marine conditions, phytoplankton cells suspended in the water column are too distantly spaced for direct competition for resources (i.e., overlapping cell boundary layers) to be a routine occurrence. Accordingly, resource-based competitive exclusion should be rare. In contrast, contemporary ecosystem models typically predict an exclusion of larger phytoplankton size classes under low-nutrient conditions, an outcome interpreted as reflecting the competitive advantage of small cells having much higher nutrient ‘affinities’ than larger cells. Here, we develop mechanistically-focused expressions for steady-state, nutrient-limited phytoplankton growth that are consistent with the discrete, distantly-spaced cells of natural populations. These expressions, when encompassed in a phytoplankton-zooplankton model, yield sustained diversity across all size classes over the full range in nutrient concentrations observed in the ocean. In other words, our model does not exhibit resource-based competitive exclusion between size classes previously associated with size-dependent differences in nutrient ‘affinities’.
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Affiliation(s)
- Michael J. Behrenfeld
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, United States of America
- * E-mail:
| | - Kelsey M. Bisson
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, United States of America
| | - Emmanuel Boss
- School of Marine Sciences, University of Maine, Orono, ME, United States of America
| | - Peter Gaube
- Applied Physics Laboratory, University of Washington, Seattle, Washington, United States of America
| | - Lee Karp-Boss
- School of Marine Sciences, University of Maine, Orono, ME, United States of America
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Lv X, Liao L, Chen S, Xiao Y, Jiang Z, Wen G. A cholesterol benzoate RRS probe for the determination of trace ammonium ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120945. [PMID: 35151166 DOI: 10.1016/j.saa.2022.120945] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
The measurement of NH4+ has attracted considerable attention with the increase of NH4+ emissions in sewage caused by human activities. So far, a variety of photometric and fluorescence methods for the detection of NH4+ have been researched and summarized, but there is no report about the use of liquid crystals (LCs) cholesteryl benzoate (CB) as a resonance Rayleigh scattering (RRS) probe to determine ammonium ions. In the NaAc-HAc buffer solution with pH = 4.80, the yellow compounds 3,5 diacetyl-1,4 dihydrolutidine (DDL) generated by the reaction of NH4+ with acetylacetone (AT) and formaldehyde (HCHO) act as the energy receiver and CB as the donor. Because the RRS spectrum of CB overlaps with the DDL absorption spectrum, resonance Rayleigh scattering energy transfer (RRS-ET) occurs. When the NH4+ concentration increased, the generated DDL increased, and the RRS-ET also increased, so the RRS intensity of the system at 395 nm decreased. For this reason, a fast and sensitive CB RRS-ET method was established to apply to the detection of NH4+ in water. The detection range was 1.00 × 10-3 - 4.66 μg/mL, and the detection limit was 6.62 × 10-3 μg/mL. Using this method to analyze and detect NH4+ in environmental water samples, the precision and recovery rate were between 1.30-9.30% and 95.5-109.9%, respectively. Therefore, this method has the advantages of sensitivity and simplicity.
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Affiliation(s)
- Xiaowen Lv
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin 541004, China
| | - Liping Liao
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin 541004, China
| | - Shuxin Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin 541004, China
| | - Yang Xiao
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin 541004, China
| | - Zhiliang Jiang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin 541004, China
| | - Guiqing Wen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin 541004, China.
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Chen X, Xiong T, Xu J, Li Y, Zhang M, Liang Y. Determination of ammonium in natural water using a quinoline-based o-dialdehyde fluorescent reagent with visible excitation wavelength. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5231-5239. [PMID: 34704564 DOI: 10.1039/d1ay01462e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this paper, a novel and stable fluorescent reagent, quinoline-2,3-dicarbaldehyde (QDA), is synthesized as a probe to detect ammonium in natural water. Ammonium reacts with QDA in the presence of SO32- and Ca2+ to form a fluorescence product, which has maximum excitation and emission wavelengths at 429 nm and 518 nm. The concentration of reagents, the reaction temperature, the reaction time, and the pH in the final solution are investigated and optimized. The interferences of typical organic nitrogen and inorganic compounds are evaluated, and results prove that most volatile amines have little or negligible effect. Under the optimized conditions, this method provides a limit of detection of 0.065 μmol L-1, a calibration range of 0.216-9 μmol L-1, and reproducibility (with a relative standard deviation) of 1.9% for 1.5 μmol L-1 ammonium. For water sample analysis, the proposed method provides comparable results to those of the conventional o-phthalaldehyde method but has longer reagent stability (42 days).
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Affiliation(s)
- Xuejia Chen
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
| | - Tingkai Xiong
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
| | - Jin Xu
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
| | - Yan Li
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
| | - Min Zhang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
| | - Ying Liang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China.
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Vráblová M, Koutník I, Smutná K, Marková D, Veverková N. Combined SPRi Sensor for Simultaneous Detection of Nitrate and Ammonium in Wastewater. SENSORS (BASEL, SWITZERLAND) 2021; 21:725. [PMID: 33494497 PMCID: PMC7865960 DOI: 10.3390/s21030725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/08/2021] [Accepted: 01/16/2021] [Indexed: 12/17/2022]
Abstract
Water pollution is a serious problem in modern society. Agriculture, being responsible for the discharge of agrochemicals, organic matter, or drug residues, produces a huge amount of wastewater. Aquaponics has the potential to reduce both water consumption and the impact of water pollution on fish farming and plant production. In the aquatic environment, inorganic nitrogen is mostly present in the form of nitrate and ammonium ions. Nitrate, as a final product of ammonia mineralization, is the most common chemical contaminant in aquifers around the world. For continuous monitoring of nitrogen compounds in wastewater, we propose a sensor for the simultaneous detection of nitrate and ammonium. A surface plasmon resonance imaging method with enzyme-mediated detection was used. Active layers of nitrate reductase and glutamine synthetase were created on the gold surface of a biochip and tested for the sensing of nitrate and ammonium in water from an aquaponic system. The proposed sensor was applied in water samples with a concentration of NO3- and NH4+ in a range between 24-780 mg·L-1 and 0.26-120 mg·L-1, respectively, with minimal pretreatment of a sample by its dilution with a buffer prior to contact on a biochip surface.
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Affiliation(s)
- Martina Vráblová
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (I.K.); (K.S.); (D.M.); (N.V.)
| | - Ivan Koutník
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (I.K.); (K.S.); (D.M.); (N.V.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
| | - Kateřina Smutná
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (I.K.); (K.S.); (D.M.); (N.V.)
| | - Dominika Marková
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (I.K.); (K.S.); (D.M.); (N.V.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
| | - Nikola Veverková
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (I.K.); (K.S.); (D.M.); (N.V.)
- Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
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10
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Li D, Xu X, Li Z, Wang T, Wang C. Detection methods of ammonia nitrogen in water: A review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115890] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Yu Y, Xu Z, Chen S, Jin M. Microbial lipid production from dilute acid and dilute alkali pretreated corn stover via Trichosporon dermatis. BIORESOURCE TECHNOLOGY 2020; 295:122253. [PMID: 31630000 DOI: 10.1016/j.biortech.2019.122253] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Microbial lipid production from lignocellulosic biomass has attracted much attention recently. In this study, T. dermatis 32903 was selected from eleven promising oleaginous yeast strains. Carbon to nitrogen ratio (C/N) was investigated and optimized to maximize lipid production. Dilute acid (DA) pretreated corn stover (CS) and dilute alkali (AL) pretreated CS were then used for microbial lipid production, resulting in lipid concentrations of 7.46 g/L and 6.81 g/L, with sugar to lipid yields reached 0.104 g/g and 0.101 g/g, respectively. Washing of DA-CS and AL-CS enhanced lipid production to 11.43 g/L and 20.36 g/L with sugar to lipid yields improved to 0.156 g/g and 0.186 g/g, respectively. As degradation products in pretreated biomass showed severe inhibition on lipid fermentation, eight typical degradation products were further investigated for their effects on lipid fermentation. T. dermatis 32903 exhibited high tolerance to furan derivatives and week acids, but lower tolerance to phenolic compounds.
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Affiliation(s)
- Yang Yu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Zhaoxian Xu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Sitong Chen
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China.
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12
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Development of analytical methods for ammonium determination in seawater over the last two decades. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.115627] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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14
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Hadikhani P, Borhani N, H Hashemi SM, Psaltis D. Learning from droplet flows in microfluidic channels using deep neural networks. Sci Rep 2019; 9:8114. [PMID: 31148559 PMCID: PMC6544611 DOI: 10.1038/s41598-019-44556-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/17/2019] [Indexed: 12/11/2022] Open
Abstract
A non-intrusive method is presented for measuring different fluidic properties in a microfluidic chip by optically monitoring the flow of droplets. A neural network is used to extract the desired information from the images of the droplets. We demonstrate the method in two applications: measurement of the concentration of each component of a water/alcohol mixture, and measurement of the flow rate of the same mixture. A large number of droplet images are recorded and used to train deep neural networks (DNN) to predict the flow rate or the concentration. It is shown that this method can be used to quantify the concentrations of each component with a 0.5% accuracy and the flow rate with a resolution of 0.05 ml/h. The proposed method can in principle be used to measure other properties of the fluid such as surface tension and viscosity.
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Affiliation(s)
- Pooria Hadikhani
- Optics Laboratory, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | - Navid Borhani
- Optics Laboratory, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - S Mohammad H Hashemi
- Optics Laboratory, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland
- Computational Science & Engineering Laboratory, ETH Zurich, Zurich, Switzerland
| | - Demetri Psaltis
- Optics Laboratory, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland
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15
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Li P, Deng Y, Shu H, Lin K, Chen N, Jiang Y, Chen J, Yuan D, Ma J. High-frequency underway analysis of ammonium in coastal waters using an integrated syringe-pump-based environmental-water analyzer (iSEA). Talanta 2019; 195:638-646. [DOI: 10.1016/j.talanta.2018.11.108] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 12/16/2022]
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16
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Zhou J, Richlen ML, Sehein TR, Kulis DM, Anderson DM, Cai Z. Microbial Community Structure and Associations During a Marine Dinoflagellate Bloom. Front Microbiol 2018; 9:1201. [PMID: 29928265 PMCID: PMC5998739 DOI: 10.3389/fmicb.2018.01201] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 05/16/2018] [Indexed: 11/13/2022] Open
Abstract
Interactions between microorganisms and algae during bloom events significantly impacts their physiology, alters ambient chemistry, and shapes ecosystem diversity. The potential role these interactions have in bloom development and decline are also of particular interest given the ecosystem impacts of algal blooms. We hypothesized that microbial community structure and succession is linked to specific bloom stages, and reflects complex interactions among taxa comprising the phycosphere environment. This investigation used pyrosequencing and correlation approaches to assess patterns and associations among bacteria, archaea, and microeukaryotes during a spring bloom of the dinoflagellate Alexandrium catenella. Within the bacterial community, Gammaproteobacteria and Bacteroidetes were predominant during the initial bloom stage, while Alphaproteobacteria, Cyanobacteria, and Actinobacteria were the most abundant taxa present during bloom onset and termination. In the archaea biosphere, methanogenic members were present during the early bloom period while the majority of species identified in the late bloom stage were ammonia-oxidizing archaea and Halobacteriales. Dinoflagellates were the major eukaryotic group present during most stages of the bloom, whereas a mixed assemblage comprising diatoms, green-algae, rotifera, and other microzooplankton were present during bloom termination. Temperature and salinity were key environmental factors associated with changes in bacterial and archaeal community structure, respectively, whereas inorganic nitrogen and inorganic phosphate were associated with eukaryotic variation. The relative contribution of environmental parameters measured during the bloom to variability among samples was 35.3%. Interaction analysis showed that Maxillopoda, Spirotrichea, Dinoflagellata, and Halobacteria were keystone taxa within the positive-correlation network, while Halobacteria, Dictyochophyceae, Mamiellophyceae, and Gammaproteobacteria were the main contributors to the negative-correlation network. The positive and negative relationships were the primary drivers of mutualist and competitive interactions that impacted algal bloom fate, respectively. Functional predictions showed that blooms enhance microbial carbohydrate and energy metabolism, and alter the sulfur cycle. Our results suggest that microbial community structure is strongly linked to bloom progression, although specific drivers of community interactions and responses are not well understood. The importance of considering biotic interactions (e.g., competition, symbiosis, and predation) when investigating the link between microbial ecological behavior and an algal bloom's trajectory is also highlighted.
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Affiliation(s)
- Jin Zhou
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Mindy L. Richlen
- Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
| | - Taylor R. Sehein
- Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
| | - David M. Kulis
- Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
| | - Donald M. Anderson
- Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
| | - Zhonghua Cai
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
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17
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Ma J, Li P, Chen Z, Lin K, Chen N, Jiang Y, Chen J, Huang B, Yuan D. Development of an Integrated Syringe-Pump-Based Environmental-Water Analyzer ( iSEA) and Application of It for Fully Automated Real-Time Determination of Ammonium in Fresh Water. Anal Chem 2018; 90:6431-6435. [PMID: 29730934 DOI: 10.1021/acs.analchem.8b01490] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The development of a multipurpose integrated syringe-pump-based environmental-water analyzer ( iSEA) and its application for spectrophotometric determination of ammonium is presented. The iSEA consists of a mini-syringe pump equipped with a selection valve and laboratory-programmed software written by LabVIEW. The chemistry is based on a modified indophenol method using o-phenylphenol. The effect of reagent concentrations and sample temperatures was evaluated. This fully automated analyzer had a detection limit of 0.12 μM with sample throughput of 12 h-1. Relative standard deviations at different concentrations (0-20 μM) were 0.23-3.36% ( n = 3-11) and 1.0% ( n = 144, in 24 h of continuous measurement, ∼5 μM). Calibration curves were linear ( R2 = 0.9998) over the range of 0-20 and 0-70 μM for the detection at 700 and 600 nm, respectively. The iSEA was applied in continuous real-time monitoring of ammonium variations in a river for 24 h and 14 days. A total of 1802 samples were measured, and only 0.4% was outlier data (≥3 sigma residuals). Measurements of reference materials and different aqueous samples ( n = 26) showed no significant difference between results obtained by reference and present methods. The system is compact (18 cm × 22 cm × 24 cm), portable (4.8 kg), and robust (high-resolution real-time monitoring in harsh environments) and consumes a small amount of chemicals (20-30 μL/run) and sample/standards (2.9 mL/run).
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Affiliation(s)
- Jian Ma
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Peicong Li
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Zhaoying Chen
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Kunning Lin
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Nengwang Chen
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Yiyong Jiang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Jixin Chen
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Bangqin Huang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
| | - Dongxing Yuan
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology , Xiamen University , Xiamen 361102 , People's Republic of China
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18
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Automated determination of ammonium in natural waters with reverse flow injection analysis based on the indophenol blue method with o -phenylphenol. Microchem J 2018. [DOI: 10.1016/j.microc.2018.02.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Optimization of a salinity-interference-free indophenol method for the determination of ammonium in natural waters using o-phenylphenol. Talanta 2018; 179:608-614. [DOI: 10.1016/j.talanta.2017.11.069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 11/18/2017] [Accepted: 11/28/2017] [Indexed: 11/21/2022]
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20
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Liang Y, Yan C, Guo Q, Xu J, Hu H. Spectrophotometric determination of ammonia nitrogen in water by flow injection analysis based on NH3- o-phthalaldehyde -Na2SO3 reaction. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.ancr.2016.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Shiozaki T, Ijichi M, Isobe K, Hashihama F, Nakamura KI, Ehama M, Hayashizaki KI, Takahashi K, Hamasaki K, Furuya K. Nitrification and its influence on biogeochemical cycles from the equatorial Pacific to the Arctic Ocean. ISME JOURNAL 2016; 10:2184-97. [PMID: 26918664 PMCID: PMC4989309 DOI: 10.1038/ismej.2016.18] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 01/03/2016] [Accepted: 01/05/2016] [Indexed: 11/29/2022]
Abstract
We examined nitrification in the euphotic zone, its impact on the nitrogen cycles, and the controlling factors along a 7500 km transect from the equatorial Pacific Ocean to the Arctic Ocean. Ammonia oxidation occurred in the euphotic zone at most of the stations. The gene and transcript abundances for ammonia oxidation indicated that the shallow clade archaea were the major ammonia oxidizers throughout the study regions. Ammonia oxidation accounted for up to 87.4% (average 55.6%) of the rate of nitrate assimilation in the subtropical oligotrophic region. However, in the shallow Bering and Chukchi sea shelves (bottom ⩽67 m), the percentage was small (0–4.74%) because ammonia oxidation and the abundance of ammonia oxidizers were low, the light environment being one possible explanation for the low activity. With the exception of the shallow bottom stations, depth-integrated ammonia oxidation was positively correlated with depth-integrated primary production. Ammonia oxidation was low in the high-nutrient low-chlorophyll subarctic region and high in the Bering Sea Green Belt, and primary production in both was influenced by micronutrient supply. An ammonium kinetics experiment demonstrated that ammonia oxidation did not increase significantly with the addition of 31–1560 nm ammonium at most stations except in the Bering Sea Green Belt. Thus, the relationship between ammonia oxidation and primary production does not simply indicate that ammonia oxidation increased with ammonium supply through decomposition of organic matter produced by primary production but that ammonia oxidation might also be controlled by micronutrient availability as with primary production.
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Affiliation(s)
- Takuhei Shiozaki
- Department of Marine Ecosystem Dynamics, Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan
| | - Minoru Ijichi
- Department of Marine Ecosystem Dynamics, Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan
| | - Kazuo Isobe
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Fuminori Hashihama
- Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Ken-Ichi Nakamura
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Makoto Ehama
- Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | | | - Kazutaka Takahashi
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Koji Hamasaki
- Department of Marine Ecosystem Dynamics, Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan
| | - Ken Furuya
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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