Li, Wenhui; Gao, Lihong; Shi, Yali; Wang, Yuan; Liu, Jiemin; Cai, Yaqi published the artcile< Spatial distribution, temporal variation and risks of parabens and their chlorinated derivatives in urban surface water in Beijing, China>, Reference of 3964-57-6, the main research area is spatial distribution temporal variation risk paraben chlorinated derivative; risk paraben chlorinated derivative river lake water Beijing China; Parabens; Risk assessment; Spatial distribution; Temporal variation; Urban surface water.
The occurrence and distribution of 13 target compounds, including 8 parabens, 4 chlorinated parabens and p-hydroxybenzoic acid (PHBA), were detected in surface water samples at 35 sampling sites in the Beijing River system, China. The surface water samples were collected from the main rivers and lakes in the urban area monthly from July 2013 to June 2014 (except the frozen period). Laboratory analyses revealed that parabens were ubiquitous in the surface water of Beijing. PHBA was the predominant compound in the surface water samples, with the average concentration of 239 ng/L, followed by the total amount of chlorinated parabens (average 50.1 ng/L) and parabens (average 44.3 ng/L). It is noteworthy that octylparaben with longer chain was 1st detected in the surface water. Significant difference was observed for paraben concentrations from different sampling sites, and the highest level of parabens was found in the Xiaotaihou River, which was mainly due to the untreated sewage discharge. Seasonal variation of target compounds in the urban surface water was also studied, and parabens exhibited a different temporal variation from chlorinated derivatives A combination of factors including high residual Cl level and water temperature as well as intense UV radiation might enhance the persistence of chlorinated parabens in chlorinated water during the wet season. Risk assessment showed that parabens and their chlorinated derivatives are not likely to produce biol. effects on aquatic ecosystems at current levels in the surface water of Beijing.
Science of the Total Environment published new progress about Algae. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Reference of 3964-57-6.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics