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Improved speciation of dissolved organic nitrogen in natural waters: amide hydrolysis with fluorescence derivatization

Improved speciation of dissolved organic nitrogen in natural waters: amide hydrolysis with fluorescence derivatization
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摘要 The objective of this study was to improve primary-amine nitrogen (1°-N) quantification in dissolved organic matter (DOM) originating from natural waters where inorganic forms of N, which may cause analytical interference, are commonly encountered. Efforts were targeted at elucidating organic-N structural criteria influencing the response of organic amines to known colorimetric and fluorescent reagents and exploring the use of divalent metal-assisted amide hydrolysis in combination with fluorescence analyse... The objective of this study was to improve primary-amine nitrogen (1°-N) quantification in dissolved organic matter (DOM) originating from natural waters where inorganic forms of N, which may cause analytical interference, are commonly encountered. Efforts were targeted at elucidating organic-N structural criteria influencing the response of organic amines to known colorimetric and fluorescent reagents and exploring the use of divalent metal-assisted amide hydrolysis in combination with fluorescence analyse...
出处 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第10期1273-1280,共8页 环境科学学报(英文版)
基金 the Andrew Mellon Foundation,NSF Biocomplexity Program (Richter) NSF Career Grant BES-9984489(Vasudevan) and the EPA-STAR program (Fimmen) for funding.
关键词 dissolved organic matter/nitrogen (DOM/DON) O-PHTHALDIALDEHYDE FLUORESCAMINE NINHYDRIN amino acids amide hydrolysis peptides dissolved organic matter/nitrogen (DOM/DON) o-phthaldialdehyde fluorescamine ninhydrin amino acids amide hydrolysis peptides
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