HPLC-MSn and GC-MS methods to study sunlight and UV-lamp, degradations of 1-amino-5-naphthalene sulfonate

被引：3

作者：

Gianotti, V. ^{[1
]}

Gosetti, F. ^{[1
]}

Polati, S. ^{[1
]}

Gennaro, M. C. ^{[1
]}

机构：

[1] Univ Piemonte Orientale Amedeo Avogadro, Dipartimento Sci Ambiente & Vita, I-15100 Alessandria, Italy

来源：

CHEMOSPHERE | 2007年 / 67卷 / 10期

关键词：

naphthalene sulfonate; degradation; HPLC-MSn; UV irradiation; sunlight irradiation;

D O I：

10.1016/j.chemosphere.2006.11.066

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

HPLC-DAD, HPLC-MS/MS, GC-MS and spectrophotometric methods are employed to investigate the degradation process of sodium 1-amino-5-naphthalene sulfonate (IMNS) aqueous solutions, when exposed to sunlight and UV-lamp (254 nm) irradiations. Experimental results show that both sunlight and 254 nm UV-lamp irradiations destroy the chemical and give rise to major degradation products, characterised by the same m/z ratios. Degradation times are lower for sunlight irradiation, for which a t(1/2) value of 137.4 min has been evaluated, in comparison with the value of t(1/2) of 26.8 min, observed for UV-lamp irradiation. The degradation pathway and the structures of the degradation products are proposed. (c) 2006 Elsevier Ltd. All rights reserved.

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页码：1993 / 1999

页数：7

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