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 t1/2 value of 137.4 min has been evaluated, in comparison with the value of t1/2 of 26.8 min, observed for UV-lamp irradiation. The degradation pathway and the structures of the degradation products are proposed
Gianotti, V., Gosetti, F., Polati, S., Gennaro, M. (2007). HPLC-MSn and GC-MS methods to study sunlight and UV-lamp, degradations of 1-amino-5-naphthalene sulfonate. CHEMOSPHERE, 67(10), 1993-1999 [10.1016/j.chemosphere.2006.11.066].
HPLC-MSn and GC-MS methods to study sunlight and UV-lamp, degradations of 1-amino-5-naphthalene sulfonate
Gosetti, F;
2007
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 t1/2 value of 137.4 min has been evaluated, in comparison with the value of t1/2 of 26.8 min, observed for UV-lamp irradiation. The degradation pathway and the structures of the degradation products are proposed
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