Determination and Characterization of Oxy-Naphthenic Acids in Oilfield   Wastewater

doi:10.1021/es401850h

CORC > 北京大学 > 城市与环境学院

	Determination and Characterization of Oxy-Naphthenic Acids in Oilfield Wastewater
	Wang, Beili ; Wan, Yi ; Gao, Yingxin ; Yang, Min ; Hu, Jianying
刊名	environmental science technology
	2013
关键词	CHROMATOGRAPHY-MASS SPECTROMETRY SANDS PROCESS WATER NATURAL-WATERS SAMPLES MS WASTEWATERS PETROLEUM OZONATION MIXTURES TOXICITY
DOI	10.1021/es401850h
英文摘要	Oxy-naphthenic acids (oxy-NM) are one of the major components of NA mixtures in wastewaters from petroleum industries. The limited available data indicated that oxy-NAs were considered as a potential marker for the degradation of NAs, and some oxy-NAs exhibited endocrine disrupting activities. However, the lack of information on the structures and occurrences of oxy-NAs in oilfield wastewaters limited the interpretations of the biotransformation pathways of NAs and structure-specific toxicity. A sensitive method for simultaneous determination of oxy-NAs together with NAs was developed by combining MAX extraction column and UPLC-ESI--QTOF-MS. The 2000-fold SPE preconcentration step was highly specific for acids and the prewash solvent greatly reduced matrix effects in the UPLC-ESI--QTOF-MS analysis, resulting in an increase in sensitivity down to detection limits in the ng/L range. To provide structural information within each oxy-NA isomer class, a new method was developed by derivatizing oxy-NAs with dansyl chloride by UPLC-ESI+-QTOF-MS. The molecular ion dansyl derivatives from the corresponding oxy-NAs and characteristic fragmentation ions, not detected before derivatization, were observed in the extracts of oilfield wastewater, providing evidence that O-3-NAs and O-4-NAs were mainly composed of OH-NAs and (OH)(2)-NAs, respectively. Semiquantification of oxy-NAs and NAs in various oilfield wastewaters revealed NAs, O-3-NAs, and O-4-NAs present at concentrations of 187-397, 44-146, and 40-108 mu g/L, respectively. Significantly different profiles of NA mixtures were observed in petroleum refinery wastewater and oil sands extraction water, but the profile of oxy-NAs was similar to NAs in different wastewaters suggesting the existence of biotransformation between NAs and oxy-NAs in the environment, and hydroxylation could be one of the major biotransformation pathways of NAs.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000323471700067&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Environmental; Environmental Sciences; SCI(E); EI; PubMed; 16; ARTICLE; 16; 9545-9554; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/160602]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Wang, Beili,Wan, Yi,Gao, Yingxin,et al. Determination and Characterization of Oxy-Naphthenic Acids in Oilfield Wastewater[J]. environmental science technology,2013.
APA	Wang, Beili,Wan, Yi,Gao, Yingxin,Yang, Min,&Hu, Jianying.(2013).Determination and Characterization of Oxy-Naphthenic Acids in Oilfield Wastewater.environmental science technology.
MLA	Wang, Beili,et al."Determination and Characterization of Oxy-Naphthenic Acids in Oilfield Wastewater".environmental science technology (2013).