Distribution, Elimination, and Rearrangement of Cyclic Volatile Methylsiloxanes in Oil-Contaminated Soil of the Shengli Oilfield, China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Distribution, Elimination, and Rearrangement of Cyclic Volatile Methylsiloxanes in Oil-Contaminated Soil of the Shengli Oilfield, China
	Sho, Yali; Xu, Shihe; Xu, Lin; Cai, Yaqi
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2015-10-06
卷号	49 期号:19 页码:11527-11535
英文摘要	Cyclic methylsiloxane standards (D4, D5, and D6) and linear methylsiloxanes (L3 through L16) were detected with high total concentrations (from 5.20 x 10(4) to 1.07 X 10(6) ng/g dw) in 18 oil sludge samples collected from the Shengli oilfield during 2008-2013. In 306 soil samples from this oilfield, the mean concentrations (43.4-125 ng/g dw) and the detection frequencies (65-76%) of D4 D6 were 10.9-11.9 and 2.05-2.24 times higher than those in reference soil samples, respectively. The concentrations of total cyclic siloxanes (Sigma Cyclic) had positive correlations (R-2 = 0.79, p < 0.05) with the total petroleum hydrocarbons concentration (TPH) in soil, indicating that oil production could release cyclic siloxanes to the environment. During 2008-2013, an increasing tendency (mean of 13.4% per annum) of Sigma Cyclic was found in soil with high TPH (>5000 mg/kg) but was not found in soil with lower TPH. Elimination experiments showed that petroleum hydrocarbons could reduce the degradation and volatilization rates of D4, DS, and D6 in impacted oilfield soil. The half-lives of D4, DS, and D6 in the opened and capped soil systems with TPH = 400-40 000 mg/kg were 1.19-22.2 and 1.03-7.43 times larger than those in common soil (TPH = 80 mg/kg), respectively. Furthermore, the petroleum hydrocarbons could affect the rearrangement-reaction rates of DS and D6 in soil.
研究领域[WOS]	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000362629100032
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32559]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Sho, Yali,Xu, Shihe,Xu, Lin,et al. Distribution, Elimination, and Rearrangement of Cyclic Volatile Methylsiloxanes in Oil-Contaminated Soil of the Shengli Oilfield, China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2015,49(19):11527-11535.
APA	Sho, Yali,Xu, Shihe,Xu, Lin,&Cai, Yaqi.(2015).Distribution, Elimination, and Rearrangement of Cyclic Volatile Methylsiloxanes in Oil-Contaminated Soil of the Shengli Oilfield, China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,49(19),11527-11535.
MLA	Sho, Yali,et al."Distribution, Elimination, and Rearrangement of Cyclic Volatile Methylsiloxanes in Oil-Contaminated Soil of the Shengli Oilfield, China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.19(2015):11527-11535.