新型吸附搅拌棒被动采样器研制及应用——基于多壁碳纳米管的改性

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Abstract

Based on the theory of passive sampler and stir bar sorptive extraction(SBSE), a novel passive sampler with a multi-walled carbon nanotubes/polydimethylsiloxane(MWCNTs/PDMS) coating by stir bar sorptive extraction was invented to monitoring micro-pollutants in the water. In this study, phenol(PhOH), diethylstilbestrol(DES) and lead(PB) were selectedas the target pollutants to test and verify the performance of absorption capacity and optimize the adsorption conditions of this novel passive sampler. The results showed that, compared to a commercial one, our self-made passive sampler with MWCTNs/PDMS sorptive coatingcan quickly reach the adsorption equilibrium time and had greater adsorption capacity. Methanol was an optimaldesorption solution for PhOH and DES, and 0.6mol/L HNO₃ was perfect for Pb. Recirculated desorption experiments show that the new passive sampler could be used more than 50times and after than the desorption efficiency can still reached more than 70%, indicating a good stability and reusability.

Key words： passive sampler stir bar sorptive extraction(SBSE) multi-walled carbon nanotubes(MWCNTs) Polydimethylsiloxane(PDMS)

Received: 25 August 2015

PACS:	X52
	X853

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	Articles by authors
	ZHENG bei
	LIU-lin
	LEI Pei
	LI-hong yan
	YU zhi-yong
	ZHOU Yi-qi
	YUAN Sheng-guang
	ZHANG Wen-jing

Cite this article:

ZHENG bei,LIU-lin,LEI Pei等. Development and application of a novel passive sampler with a modified multi-walled carbon nanotubes sorptive coating by stir bar sorptive extraction[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(4): 1073-1081.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2016/V36/I4/1073

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