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	A new solid-phase extraction disk based on a sheet of single-walled carbon nanotubes
	Niu, Hong Yun; Cai, Ya Qi; Shi, Ya Li; Wei, Fu Sheng; Liu, Jie Min; Bin Jiang, Gui
	2008
会议名称	41st Annual Meeting of the German-Society-for-Mass-Spectrometry
会议日期	MAR 02-05, 2008
会议地点	Giessen, GERMANY
关键词	Solid-phase extraction disk Single-walled carbon nanotube sheet C-18 disk Activated carbon disk Large-volume water sample
英文摘要	A new kind of solid-phase extraction disk based on a sheet of single-walled carbon nanotubes (SWCNTs) is developed in this study. The properties of such disks are tested, and different disks showed satisfactory reproducibility. One liter of aqueous solution can pass through the disk within 10-100 min while still allowing good recoveries. Two disks (DD-disk) can be stacked to enrich phthalate esters, bisphenol A (BPA), 4-n-nonylphenol (4-NP), 4-tert-octylphenol (4-OP) and chlorophenols from various volumes of solution. The results show that SWCNT disks have high extraction ability for all analytes. The SWCNT disk can extract polar chlorophenols more efficiently than a C-18 disk from water solution. Unlike the activated carbon disk, analytes adsorbed by the new disks can be eluted completely with 8-15 mL of methanol or acetonitrile. Finally, the DD-disk system is used to pretreat 1000-mL real-world water samples spiked with BPA, 4-OP and 4-NP. Detection limits of 7, 25, and 38 ng L-1 for BPA, 4-OP, and 4-NP, respectively, were achieved under optimized conditions. The advantages of this new disk include its strong adsorption ability, its high flow rate and its easy preparation.
ISBN号	1618-2642
内容类型	会议论文
源URL	[http://ir.rcees.ac.cn/handle/311016/24689]
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	Niu, Hong Yun,Cai, Ya Qi,Shi, Ya Li,et al. A new solid-phase extraction disk based on a sheet of single-walled carbon nanotubes[C]. 见:41st Annual Meeting of the German-Society-for-Mass-Spectrometry. Giessen, GERMANY. MAR 02-05, 2008.

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