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
Chemospherejournal_title
Chemosphereauthors
Gianotti V,Gosetti F,Polati S,Gennaro MCdoi
10.1016/j.chemosphere.2006.11.066subject
Has Abstractpub_date
2007-05-01 00:00:00pages
1993-9issue
10eissn
0045-6535issn
1879-1298pii
S0045-6535(06)01694-8journal_volume
67pub_type
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