Environmental Science and Technology 46(12)
Overview of new articles on POPs in a new issue of the Environmental Science and Technology journal.
Short Chain Chlorinated Paraffins in Mollusks from Coastal Waters in the Chinese Bohai Sea
Bo Yuan, Thanh Wang, Nali Zhu, Kegang Zhang, Lixi Zeng, Jianjie Fu, Yawei Wang, and Guibin Jiang
pp 6489–6496
- As an extremely complex group of persistent organic pollutants (POPs) candidates in the Stockholm Convention, short chain chlorinated paraffins (SCCPs) have been of extensive concern in recent years. In this study, nine bivalve and two gastropod species were collected in 2009 to evaluate the spatial distributions and potential factors influencing the bioaccumulation of SCCPs in mollusks in the Chinese Bohai Sea.
Liang-Ying Liu, Ji-Zhong Wang, Gao-Ling Wei, Yu-Feng Guan, Charles S. Wong, and Eddy Y. Zeng
pp 6497–6504
- Sources, compositions, and historical records of polycyclic aromatic hydrocarbons (PAHs) in sediment cores collected from the Yellow Sea and the South China Sea were analyzed to investigate the influence of anthropogenic activities. The occurrence of PAHs was mainly derived from various combustion sources, especially the combustion of biomass and domestic coal.
Jonathan P. Benskin, Michael G. Ikonomou, Frank A. P. C. Gobas, Million B. Woudneh, and John R. Cosgrove
pp 6505–6514
- The environmental occurrence of perfluorooctane sulfonate (PFOS) can arise from its direct use as well as from transformation of precursors ((N-alkyl substituted) perfluorooctane sulfonamides; FOSAMs). Perfluorooctane sulfonamidoethanol-based phosphate (SAmPAP) esters are among numerous potential PFOS-precursors which have not been previously detected in the environment and for which little is known about their stability.
Biotransformation of Hexabromocyclododecanes (HBCDs) with LinB—An HCH-Converting Bacterial Enzyme
Norbert V. Heeb, Daniel Zindel, Birgit Geueke, Hans-Peter E. Kohler, and Peter Lienemann
pp 6566–6574
- Hexabromocyclododecanes (HBCDs) and hexachlorocyclohexanes (HCHs) are polyhalogenated hydrocarbons with similar stereochemistry. Both classes of compounds are considered biologically persistent and bioaccumulating pollutants. In 2009, the major HCH stereoisomers came under regulation of the Stockholm convention. Despite their persistence, HCHs are susceptible to bacterial biotransformations. Here we show that LinB, an HCH-converting haloalkane dehalogenase from Sphingobium indicum B90A, is also able to transform HBCDs.
Lisa A. Rodenburg, Songyan Du, Hui Lui, Jia Guo, Nicole Oseagulu, and Donna E. Fennell
pp 6612–6620
- Polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) are persistent organic pollutants targeted by the Stockholm Convention. Both contain aromatic chlorines and are subject to microbial dechlorination. Dechlorination of PCBs in sewers in the Delaware River basin was recently reported. In this work, two data sets on concentrations of PCBs and PCBs+PCDD/Fs in wastewater treatment plant influents and effluents were analyzed to look for evidence that these compounds undergo dechlorination in the sewers of the New York/New Jersey Harbor area.
Faqi Wang, Wei Liu, Junsheng Ma, Mingxi Yu, Yihe Jin, and Jiayin Dai
pp 6822–6829
- We previously identified a number of perfluorooctane sulfonic acid (PFOS)-responsive transcripts in developing rat brains using microarray analysis. However, the underlying mechanisms and functional consequences remain unclear. We hypothesized that microRNAs (miRNAs), which have emerged as powerful negative regulators of mRNA and protein levels, might be responsible for PFOS-induced mRNA changes and consequent neural dysfunctions.
20.6.2012
