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

Abstract:

:HPLC-DAD, HPLC-MS/MS, GC-MS and spectrophotometric methods are employed to investigate the degradation process of sodium 1-amino-5-naphthalene sulfonate (1A5NS) 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.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Gianotti V,Gosetti F,Polati S,Gennaro MC

doi

10.1016/j.chemosphere.2006.11.066

subject

Has Abstract

pub_date

2007-05-01 00:00:00

pages

1993-9

issue

10

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(06)01694-8

journal_volume

67

pub_type

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