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Lv Z, Dong F, Zhang W, Chen S, Zheng F, Zhou L, Liu M, Huo T. Determination of Persistent Organic Pollutants (POPs) in Atmospheric Gases and Particles by Solid-Phase Extraction (SPE) and Gas Chromatography–Tandem Mass Spectrometry (GC–MS/MS). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2144873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Zhenzhen Lv
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Faqin Dong
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang, China
| | - Wen Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Shanyu Chen
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, China
| | - Fei Zheng
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, China
| | - Lin Zhou
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, China
| | - Mingxue Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Tingting Huo
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, China
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Li C, Liu J, Wu N, Pan X, Feng J, Al-Basher G, Allam AA, Qu R, Wang Z. Photochemical formation of hydroxylated polychlorinated biphenyls (OH-PCBs) from decachlorobiphenyl (PCB-209) on solids/air interface. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120758. [PMID: 31207486 DOI: 10.1016/j.jhazmat.2019.120758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/30/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
In this work, the photochemical transformation of decachlorobiphenyl (PCB-209) on the surface of several solid particles were systematically evaluated under simulated solar irradiation. The degradation kinetics of PCB-209 were first investigated using silica as a model aerosol particulate. It was found that PCB-209 photodegradation was enhanced at small silica particle size, low surface coverage and low humidity. Electron paramagnetic resonance (EPR) analysis and radicals quenching experiments demonstrated that hydroxyl radicals contributed to PCB-209 degradation. Stepwise hydrodechlorination, hydroxyl addition and cleavage of the CC bridge bond were mainly observed in the reaction process, leading to the formation of lower chlorinated PCBs, hydroxylated PCBs (OH-PCBs) and chlorophenols. Based on density functional theory (DFT) calculation, the dissociation energy of the CCl bond requires 354.81-359.79 kJ/mol energy that corresponds to a wavelength of less than 322 nm. And the minimum activation energy of OH radicals attack on PCB-209 is only 18.12 kJ/mol. Photochemical transformation of PCB-209 can also occur on the surface of natural particles, but the rates were inhibited as compared to silica. The hydroxylation and hydrodechlorination products of PCB-209 were detected in all natural particles. This study would make significant contribution to understanding the fate of PCBs in solids/air interface.
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Affiliation(s)
- Chenguang Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China
| | - Jiaoqin Liu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China
| | - Nannan Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China
| | - Xiaoxue Pan
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China
| | - Jianfang Feng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China
| | - Gadh Al-Basher
- King Saud University, College of Science, Zoology Department, P.O. Box 2455, Riyadh, 11451, Saudia Arabia
| | - Ahmed A Allam
- Beni-Suef University, Faculty of Science, Zoology Department, Beni-Suef, 65211, Egypt
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China.
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China
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Liu S, Ferreira JFDS, Tian D, Tang Y, Liu L, Yang W, Liu Z, Tian N. Preparative Separation of High-Purity Dihydroartemisinic Acid from Artemisinin Production Waste by Combined Chromatography. Chem Pharm Bull (Tokyo) 2018; 66:319-326. [PMID: 29311435 DOI: 10.1248/cpb.c17-00927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In order to make full use of artemisinin production waste and thus to reduce the production cost of artemisinin, we developed an efficient and scalable method to isolate high-purity dihydroartemisinic acid from artemisinin production waste by combining anion-exchange resin with silica-gel column chromatography. The adsorption and desorption characteristics of dihydroartemisinic acid on 10 types of anion-exchange resin were investigated, and the results showed that the 717 anion-exchange resin exhibited the highest capacity of adsorption and desorption to dihydroartemisinic acid. Adsorption isotherms were established for the 717 anion-exchange resin and they fitted well with both Langmuir and Freundlich model. Dynamic adsorption and desorption properties of 717 anion-exchange resin were characterized to optimize the chromatographic conditions. Subsequently, the silica-gel column chromatography was performed and dihydroartemisinic acid with a purity of up to 98% (w/w) was obtained. Finally, the scale-up experiments validated the preparative separation of high-purity dihydroartemisinic acid from industrial waste developed in the present work. This work presented for the first time an isolation of dihydroartemisinic acid with a purity of 98% from Artemisia annua (A. annua) by-product, which adds more value to this crop and has the potential to lower the prices of anti-malarial drugs.
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Affiliation(s)
- Shuoqian Liu
- Department of Tea Science, College of Horticulture and Hardening, Hunan Agricultural University.,National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals
| | | | - Dongming Tian
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals
| | - Yuwei Tang
- Department of Tea Science, College of Horticulture and Hardening, Hunan Agricultural University
| | - Liping Liu
- Department of Tea Science, College of Horticulture and Hardening, Hunan Agricultural University
| | - Wei Yang
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals
| | - Zhonghua Liu
- Department of Tea Science, College of Horticulture and Hardening, Hunan Agricultural University.,National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals
| | - Na Tian
- Department of Tea Science, College of Horticulture and Hardening, Hunan Agricultural University
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Yahaya A, Okoh OO, Okoh AI, Adeniji AO. Occurrences of Organochlorine Pesticides along the Course of the Buffalo River in the Eastern Cape of South Africa and Its Health Implications. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14111372. [PMID: 29125583 PMCID: PMC5708011 DOI: 10.3390/ijerph14111372] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/06/2017] [Accepted: 11/06/2017] [Indexed: 12/01/2022]
Abstract
Most organochlorine pesticides (OCPs) which are increasingly used in agriculture and industry are not biodegradable and thereby persist in the environment for a very long period of time. They are capable of negatively impacting the health of humans and biota when present in a higher concentration than recommended. This study evaluated the concentrations of 17 OCPs in surface water samples collected from six sampling sites along the course of the Buffalo River in Eastern Cape, South Africa, between December 2015 and May 2016. The samples were subjected to solvent extraction, followed by florisil clean up, and analyzed using gas chromatography coupled with an electron capture detector. The individual concentrations of OCPs detected ranged from <LOD to 4403 ng/L in summer and <LOD to 313 ng/L in autumn. The levels of OCPs in the study area were generally above the United State Environmental Protection Agency (USEPA) limit of 100 ng/L in all the sampling locations in the two seasons. The cancer risk assessment values were below the permissible limit of the 10−6 level, although the life average daily dose were slightly above the USEPA maximum limits of 10−4. Therefore, there is a need for the adequate regulation of agrochemical storage, use, and disposal in this province and other parts of South Africa.
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Affiliation(s)
- Abdulrazaq Yahaya
- SAMRC Microbial Water Quality Monitoring Center, University of Fort Hare, Alice 5700, South Africa.
- Department of Chemistry, University of Fort Hare, Alice 5700, South Africa.
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa.
| | - Omobola O Okoh
- SAMRC Microbial Water Quality Monitoring Center, University of Fort Hare, Alice 5700, South Africa.
- Department of Chemistry, University of Fort Hare, Alice 5700, South Africa.
| | - Anthony I Okoh
- SAMRC Microbial Water Quality Monitoring Center, University of Fort Hare, Alice 5700, South Africa.
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa.
| | - Abiodun O Adeniji
- SAMRC Microbial Water Quality Monitoring Center, University of Fort Hare, Alice 5700, South Africa.
- Department of Chemistry, University of Fort Hare, Alice 5700, South Africa.
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Buczyńska AJ, Geypens B, Van Grieken R, De Wael K. Optimization of sample clean-up for the GC–C-IRMS and GC–IT-MS analyses of PAHs from air particulate matter. Microchem J 2015. [DOI: 10.1016/j.microc.2014.10.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Guo J, Li Z, Sandy AL, Li A. Method development for simultaneous analyses of multiple legacy and emerging organic chemicals in sediments. J Chromatogr A 2014; 1370:1-8. [DOI: 10.1016/j.chroma.2014.10.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 10/08/2014] [Accepted: 10/09/2014] [Indexed: 10/24/2022]
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Mechlińska A, Wolska L, Czarzbon I, Namieśnik J. Comparison of Different Extraction Techniques of PCBs from Sediment Samples Using the Isotope Dilution Mass Spectrometry Technique. Crit Rev Anal Chem 2012. [DOI: 10.1080/10408347.2011.645376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Jie F, Kai-Xiong W. Multiresidual Analysis of Organochlorine Pesticides, Polychlorinated Biphenyls and Polycyclic Aromatic Hydrocarbons in Marine Shellfishes by Gas Chromatography-Ion Trap Mass Spectrometry. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2007. [DOI: 10.1016/s1872-2040(07)60095-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gutiérrez-Dabán A, Fernández-Espinosa AJ, Ternero-Rodríguez M, Fernández-Alvarez F. Particle-size distribution of polycyclic aromatic hydrocarbons in urban air in southern Spain. Anal Bioanal Chem 2005; 381:721-36. [PMID: 15688157 DOI: 10.1007/s00216-004-2909-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2004] [Revised: 10/14/2004] [Accepted: 10/19/2004] [Indexed: 10/25/2022]
Abstract
The size distribution of polycyclic aromatic hydrocarbons (PAH) was determined for airborne particles from a large city with high vehicular traffic. The analytical method was optimised and validated using NIST standard reference material (SRM 1649a Urban Dust). The 16 priority PAH listed in the US-EPA were Soxhlet-extracted from filtered particulate matter and then fractionated using on-column chromatography. The aromatic fraction was quantified by gas chromatography-mass spectrometry. Real samples of particles collected in Seville (Spain) were analysed using the validated method. Values for the total concentration of PAH in the air, as well as the concentrations of each PAH in six particle-size ranges were obtained. Values of the PAH in TSP, PM10, PM2.5 and PM1 were assessed.
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Affiliation(s)
- A Gutiérrez-Dabán
- Department of Analytical Chemistry Prof. F. Pino Pérez, Faculty of Chemistry, University of Seville, C. Profesor García González s/n, 41012, Seville, Spain
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Mandalakis M, Zebühr Y, Gustafsson O. Efficient isolation of polyaromatic fraction from aliphatic compounds in complex extracts using dimethylformamide–pentane partitionings. J Chromatogr A 2004; 1041:111-7. [PMID: 15281260 DOI: 10.1016/j.chroma.2004.04.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A liquid-liquid partitioning method was optimized for the rapid and quantitative separation of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) from aliphatic hydrocarbons in complex primary extracts. This technique was based on the selective extraction of PAHs and PCBs from an aliphatic solvent into dimethylformamide (DMF). Partition experiments demonstrated that the optimal performance was achieved with a DMF (5% H2O)-n-pentane binary system. The optimized application of two consecutive DMF (5% H2O)-n-pentane treatments to extracts from two different polluted sediments facilitated the elimination of alkanes and unresolved complex mixture by more than 94% while the average recoveries of spiked deuterated-PAHs and 13C labeled PCBs ranged from 84 to 94 and 75 to 96%, respectively.
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Affiliation(s)
- Manolis Mandalakis
- Institute of Applied Environmental Research (ITM), Stockholm University, 10691 Stockholm, Sweden
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