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Zhang W, Li L, Wang D, Wang R, Yu S, Gao N. Characterizing dissolved organic matter in aquatic environments by size exclusion chromatography coupled with multiple detectors. Anal Chim Acta 2022; 1191:339358. [PMID: 35033260 DOI: 10.1016/j.aca.2021.339358] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 12/01/2022]
Abstract
Size exclusion chromatography (SEC) is one of the most commonly used techniques to detect the molecular weight (MW) of dissolved organic matter (DOM) in aquatic environments. The significant improvement and focus of this method have been the application of multiple detectors, which contribute to providing fundamental physicochemical properties of various MW fractions. This study has coupled SEC with multiple detectors to simultaneously detect ultraviolet absorbance, fluorescence, dissolved organic carbon, and dissolved organic nitrogen of different MW fractions. The detection limits for the organic carbon and nitrogen detectors were 0.20 μg C L-1 and 0.14 μg N L-1, respectively. Furthermore, we gave an interpretation of the nature and evolution of DOM in surface water based on the comparison and analyses of the combined chromatogram obtained from multiple detectors. Fractions assigned as hydrophobic humic-like substances, hydrophilic humic-like substances, low-MW microbial extracellular metabolites and low-MW hydrophobic protein-like substances were first established in this study and attributed to the presence of a fluorescence detector. We believe that the developed method provides in-depth knowledge of the structure and composition of DOM and could be used as a potential analytical tool in environmental organic chemistry, humus chemistry and supramolecular chemistry.
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Affiliation(s)
- Wenjun Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Lei Li
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai, 200092, China.
| | - Denghui Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Rui Wang
- College of Electronics and Information Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai, 200092, China
| | - Shuili Yu
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Naiyun Gao
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
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Barth HG, Boyes BE, Jackson C. Size Exclusion Chromatography and Related Separation Techniques. Anal Chem 1998. [DOI: 10.1021/a1980015t] [Citation(s) in RCA: 122] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Howard G. Barth
- Central Research and Development, DuPont Company, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, Little Falls Analytical DivisionNewport, Hewlett-Packard Company, 538 First State Boulevard, Newport, Delaware 19804, and Marshall Laboratory, DuPont Automative Products, 3401 Grays Ferry Avenue, Philadelphia, Pennsylvania 19146
| | - Barry E. Boyes
- Central Research and Development, DuPont Company, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, Little Falls Analytical DivisionNewport, Hewlett-Packard Company, 538 First State Boulevard, Newport, Delaware 19804, and Marshall Laboratory, DuPont Automative Products, 3401 Grays Ferry Avenue, Philadelphia, Pennsylvania 19146
| | - Christian Jackson
- Central Research and Development, DuPont Company, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, Little Falls Analytical DivisionNewport, Hewlett-Packard Company, 538 First State Boulevard, Newport, Delaware 19804, and Marshall Laboratory, DuPont Automative Products, 3401 Grays Ferry Avenue, Philadelphia, Pennsylvania 19146
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Ultrafiltration: a technique for determining the molecular-mass distribution of group parameters of organic pollutants in natural waters. J Chromatogr A 1997. [DOI: 10.1016/s0021-9673(96)00816-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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