Comparison of different triolein-based composite semipermeable membranes for passive sampling of organochlorine pesticides

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Comparison of different triolein-based composite semipermeable membranes for passive sampling of organochlorine pesticides
	Tang JianFeng ; Xu YiPing ; Ma Mei ; Wang ZiJian
刊名	Science & Technology - Other Topics
	2012
卷号	57 期号:15 页码:1788-1795
关键词	passive sampler triolein-embedded semipermeable membranes organochlorine pesticides
ISSN号	1001-6538
中文摘要	Passive sampling methods have been widely used for more than 20 years because they can provide information on time-weighted average concentrations ( (TWA)) of hydrophobic organic contaminants in water. Many factors affect the efficiency and applicability of a passive sampling process. Among others, selection of the sampler design and choice of the supporting membrane material are important factors that determine the performance of passive samplers. In this work, the influences of some critical properties of membranes, such as membrane density, hydrophilicity of the membrane surface, and chemical and mechanical resistances, on the uptake of organic chlorinated pesticides (OCPs) were evaluated. Four membrane materials, namely cellulose acetate (CA), cellulose acetate butyrate (CAB), a cellulose acetate-cellulose triacetate blend (CA-CTA), and cellulose triacetate (CTA), and their triolein-embedded samplers were selected for the study. The four membranes are all hydrophilic; CAB has the highest contact angle and CA has the lowest. CTA is chemically and mechanically resistant, and has better tensile strength than the other membranes have. CAB does not have good chemical resistance and dissolves in hexane/dichloromethane solvent. CA and CTA alone showed lower uptake rates for the selected OCPs than with triolein-embedded passive samplers, indicating that triolein increased the accumulation capacity. Triolein-embedded CA (TECAM), CA-CTA (TECA-CTA), CTA (TECTA), and CAB (TECAB) as passive samplers showed similar uptake patterns; TECTA showed the highest uptake rates and TECAB showed the poorest accumulation. In summary, TECTA gave the best performance among all the tested composite semipermeable membranes.
WOS记录号	WOS:000303868900006
公开日期	2014-11-28
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8124]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Tang JianFeng,Xu YiPing,Ma Mei,et al. Comparison of different triolein-based composite semipermeable membranes for passive sampling of organochlorine pesticides[J]. Science & Technology - Other Topics,2012,57(15):1788-1795.
APA	Tang JianFeng,Xu YiPing,Ma Mei,&Wang ZiJian.(2012).Comparison of different triolein-based composite semipermeable membranes for passive sampling of organochlorine pesticides.Science & Technology - Other Topics,57(15),1788-1795.
MLA	Tang JianFeng,et al."Comparison of different triolein-based composite semipermeable membranes for passive sampling of organochlorine pesticides".Science & Technology - Other Topics 57.15(2012):1788-1795.