TY - JOUR
T1 - HPLC-MSn and GC-MS methods to study sunlight and UV-lamp, degradations of 1-amino-5-naphthalene sulfonate
AU - GIANOTTI, Valentina
AU - GOSETTI, Fabio
AU - Polati, S.
AU - Gennaro, M. C.
N1 - Funding Information:
The authors gratefully acknowledge the financial support by MIUR (Ministero dell’Università e della Ricerca, Roma) and AATF (Agenzia Ambiente Territorio e Formazione, Alessandria, Italy).
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
UR - https://iris.uniupo.it/handle/11579/25482
U2 - 10.1016/j.chemosphere.2006.11.066
DO - 10.1016/j.chemosphere.2006.11.066
M3 - Article
SN - 0045-6535
VL - 67
SP - 1993
EP - 1999
JO - Chemosphere
JF - Chemosphere
IS - 10
ER -