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Moriwaki H, Osaka I, Hashimoto K, Yamada O. Direct detection of dithiocarbamate fungicides by SALDI/MS using porous TiC ceramic powder as a substrate. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2464-2471. [PMID: 38591453 DOI: 10.1039/d3ay01533e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Dithiocarbamate fungicides (DTCs) have been widely used all over the world. Some of them show toxicities, such as growth toxicity and teratogenicity. Therefore, the analysis of DTCs in environments or crops is very significant. However, their direct and individual analysis was difficult, because most of them are metal complex compounds and have macromolecular properties and a low solubility in water or organic solvents. In the conventional analytical methods for DTCs, the total amount of DTCs was obtained by the quantification of the derivatives of the ligand or by measuring the carbon disulfide formed by the decomposition of the fungicides. Surface assisted laser desorption (SALDI)/MS can detect various compounds, such as metal complexes and macromolecules, present in a nanostructured substrate. The porous titanium carbide (TiC) ceramic powder shows adsorptive properties to various substances and can be used as a substrate for SALDI/MS. In this study, a method for the individual and direct detection of dithiocarbamate pesticides by SALDI/MS using porous TiC ceramics as a substrate has been developed. The dithiocarbamate fungicide was mixed with the porous TiC powder in a mortar, and the mixture was analyzed by SALDI/MS. The deprotonated ion of the ethylene-bis-dithiocarbamate complex, mancozeb or zineb, was detected in the negative ion mode. For the dimethyldithiocarbamate complexes, ferbam and ziram, the ion of the eliminated dithiocarbamate ligand was detected in the positive ion mode. Calibration curves by the present method for Manzeb showed good linearity by using an internal standard material. Based on these results, we concluded that this method is useful for the analysis of DTCs.
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Affiliation(s)
- Hiroshi Moriwaki
- Shinshu University, Department of Applied Biology, Faculty of Textile Science and Technology, 3-15-1, Tokida, Ueda 386-8567, Japan.
- Shinshu University, Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, 3-15-1, Tokida, Ueda 386-8567, Japan
| | - Issey Osaka
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180, Kurokawa, Imizu, 939-0398, Japan
| | - Kotaro Hashimoto
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180, Kurokawa, Imizu, 939-0398, Japan
| | - Osamu Yamada
- OSU Co., Ltd., 3-1-1, Nakagaito, Daito 574-8530, Japan
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Dahiya D, Pugazhenthi G, Kumar M, Vasanth D. Separation of bacteria Kocuria rhizophila BR-1 from its broth during synthesis of gold nanoparticles using ceramic membrane by shear-enhanced filtration process. CHEMOSPHERE 2021; 281:130761. [PMID: 34022603 DOI: 10.1016/j.chemosphere.2021.130761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 03/31/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
In the present study, disc type ceramic membranes made from China clay, quartz and calcium carbonate were used for the separation of bacteria Kocuria rhizophila from its broth by shear-enhanced filtration process. Porosity, water permeability and average pore size of the membrane were 42%, 3.24 × 10-4 L m-2 h-1 Pa-1 and 180 nm, respectively. The membrane exhibited good chemical tolerance in acid, alkali and chlorine solutions. The effect of trans-membrane pressure and rotational speed on permeate flux and bacterial rejection was investigated. It was found that the permeate flux increased (40-163.5 L m-2 h-1) and bacterial rejection decreased (99.2-94.5%) with increasing pressure (69-345 kPa). With an increase in rotation (50-250 rpm), the permeate flux increased from 156.5 to 176.8 L m-2 h-1, while bacterial rejection decreased from 94.3 to 83.2%. The pressure of 345 kPa and rotational speed of 250 rpm with flux of 176.8 L m-2 h-1 and rejection of 83% was selected as an optimum process condition. The analysis of fouling models revealed that the cake filtration model provided the highest R2 (0.89) value followed by intermediate pore blocking (0.87) which indicates that cake filtration model has the best fit with the experimental data. Henceforth, the shear enhanced filtration process used in this study can be considered as a pertinent filtration process for efficient recovery of biological products at industrial scale.
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Affiliation(s)
- Digvijay Dahiya
- Department of Biotechnology, National Institute of Technology Raipur, Raipur, Chhattisgarh, 492010, India
| | - G Pugazhenthi
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Amingaon, Guwahati, Assam, 781039, India
| | - Mohit Kumar
- Department of Biotechnology, National Institute of Technology Raipur, Raipur, Chhattisgarh, 492010, India
| | - D Vasanth
- Department of Biotechnology, National Institute of Technology Raipur, Raipur, Chhattisgarh, 492010, India.
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Removal of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) from water by coagulation: Mechanisms and influencing factors. J Colloid Interface Sci 2014; 434:59-64. [DOI: 10.1016/j.jcis.2014.07.041] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 07/23/2014] [Accepted: 07/25/2014] [Indexed: 01/09/2023]
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Du Z, Deng S, Bei Y, Huang Q, Wang B, Huang J, Yu G. Adsorption behavior and mechanism of perfluorinated compounds on various adsorbents--a review. JOURNAL OF HAZARDOUS MATERIALS 2014; 274:443-54. [PMID: 24813664 DOI: 10.1016/j.jhazmat.2014.04.038] [Citation(s) in RCA: 441] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 03/29/2014] [Accepted: 04/20/2014] [Indexed: 05/08/2023]
Abstract
Perfluorinated compounds (PFCs) have drawn great attention recently due to their wide distribution in aquatic environments and potential toxic to animals and human beings. Adsorption not only is an effective technology to remove PFCs from water or wastewater, but also affects PFC distribution at solid-liquid interfaces and their fate in aquatic environments. This article reviews the adsorption behavior of different PFCs (mainly perfluorooctane sulfonate and perfluorooctanoate) on various adsorptive materials. Some effective adsorbents are introduced in detail in terms of their preparation, characteristics, effects of solution chemistry and PFC properties on adsorption. Adsorption mechanisms of PFCs on different adsorbents are summarized, and various interactions including electrostatic interaction, hydrophobic interaction, ligand exchange, and hydrogen bond are fully reviewed. The adsorbents with amine groups generally have high adsorption capacity for PFCs, and formation of micelles/hemi-micelles plays an important role in achieving high adsorption capacity of perfluorinated surfactants on some porous adsorbents. Hydrophobic interaction is mainly responsible for PFC adsorption, but the difference between PFCs and traditional hydrocarbons has not clearly clarified. This review paper would be helpful for the preparation of effective adsorbents for PFC removal and understanding interfacial process of PFCs during their transport and fate in aquatic environments.
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Affiliation(s)
- Ziwen Du
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China
| | - Shubo Deng
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China.
| | - Yue Bei
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China
| | - Qian Huang
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China
| | - Bin Wang
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China
| | - Jun Huang
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China
| | - Gang Yu
- School of Environment, POPs Research Center, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China
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Sekimoto Y, Okiharu T, Nakajima H, Fujii T, Shirai K, Moriwaki H. Removal of Pb(II) from water using keratin colloidal solution obtained from wool. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:6531-6538. [PMID: 23608990 DOI: 10.1007/s11356-013-1727-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Accepted: 04/08/2013] [Indexed: 06/02/2023]
Abstract
The aim of this study is to investigate the use of keratin colloidal solution, which was obtained from wool, for the removal of Pb(II) from water. The addition of keratin colloidal solution (15 g L(-1), 0.30 mL) to a Pb(II) solution (1.0 mM, 0.90 mL, pH 5.0) resulted in the formation and precipitation of a Pb-keratin aggregate. Measurement of the Pb(II) and protein concentrations in the supernatant solution revealed that 88 and 99 % of the Pb(II) and keratin protein were removed from the solution, respectively. The maximum Pb(II) uptake capacity of keratin in the colloidal solution was 43.3 mg g(-1). In addition, the Pb-keratin aggregate was easily decomposed via the addition of nitric acid, which enabled the recovery of Pb(II). However, aggregation did not occur in solutions with Pb(II) concentrations below 0.10 mM. Therefore, we used a keratin colloidal solution encapsulated in a dialysis cellulose tube to remove Pb(II) from 0.10 mM solutions, which enabled the removal of 95 % of the Pb(II). From these results, we conclude that keratin colloidal solution is useful for the treatment of water polluted with Pb(II).
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Affiliation(s)
- Yuri Sekimoto
- Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda, 386-8567, Japan
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Xiong X, Yang Z, Huang Y, Jiang L, Chen Y, Shen Y, Chen B. Organic-inorganic hybrid fluorous monolithic capillary column for selective solid-phase microextraction of perfluorinated persistent organic pollutants. J Sep Sci 2013; 36:923-31. [DOI: 10.1002/jssc.201200913] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Revised: 10/23/2012] [Accepted: 11/15/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Xiyue Xiong
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
| | - Zihui Yang
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
| | - Yongbin Huang
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
| | - Linbo Jiang
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
| | - Yingzhuang Chen
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
| | - Yao Shen
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
| | - Bo Chen
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research; Ministry of Education; Hunan Normal University; Changsha; China
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Yu J, Lv L, Lan P, Zhang S, Pan B, Zhang W. Effect of effluent organic matter on the adsorption of perfluorinated compounds onto activated carbon. JOURNAL OF HAZARDOUS MATERIALS 2012; 225-226:99-106. [PMID: 22609392 DOI: 10.1016/j.jhazmat.2012.04.073] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 04/26/2012] [Accepted: 04/28/2012] [Indexed: 06/01/2023]
Abstract
Effect of effluent organic matter (EfOM) on the adsorption of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) onto powdered activated carbon (PAC) was quantitatively investigated at environmentally relevant concentration levels. The adsorption of both perfluorinated compounds (PFCs) onto PAC followed pseudo-second order kinetics and fitted the Freundlich model well under the given conditions. Intraparticle diffusion was found to be the rate-controlling step in the PFC adsorption process onto PAC in the absence and presence of EfOM. The presence of EfOM, either in PFC-EfOM simultaneous adsorption onto fresh PAC or in PFC adsorption onto EfOM-preloaded PAC, significantly reduced the adsorption capacities and sorption rates of PFCs. The pH of zero point of charge was found to be 7.5 for fresh PAC and 4.2 for EfOM-preloaded PAC, suggesting that the adsorbed EfOM imparted a negative charge on PAC surface. The effect of molecular weight distribution of EfOM on the adsorption of PFCs was investigated with two EfOM fractions obtained by ultrafiltration. The low-molecular-weight compounds (<1kDa) were found to be the major contributors to the significant reduction in PFC adsorption capacity, while large-molecular-weight compounds (>30kDa) had much less effect on PFC adsorption capacity.
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Affiliation(s)
- Jing Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
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