QQ客服 官方微博 反馈留言

	Preparation of a chitosan-coated C-18-functionalized magnetite nanoparticle sorbent for extraction of phthalate ester compounds from environmental water samples
	Zhang, Xiao Le; Niu, Hong Yun; Zhang, Sheng Xiao; Cai, Ya Qi
	2010
会议名称	36th Colloquium Spectroscopicum Internationale
会议日期	AUG 30-SEP 03, 2009
会议地点	Eotvos Lorand Univ, Budapest, HUNGARY
关键词	Chitosan-coated C18-functionalized magnetite nanoparticles Solid-phase extraction Phthalate esters
英文摘要	Novel superparamagnetic chitosan-coated C-18-functionalized magnetite nanoparticles (MNPs) were successfully synthesized and applied as an effective sorbent for the preconcentration of several typical phthalate ester compounds from environmental water samples. The MNPs were 20 nm in diameter and had a high magnetic saturation value (52 emu g(-1)), which endowed the sorbent with a large surface area and the convenience of isolation from water samples. Phthalate esters could be extracted by the interior octadecyl groups through hydrophobic interaction. The hydrophilic porous chitosan polymer coating promoted the dispersion of MNPs in water samples, and improved the anti-interference ability of the sorbent without influencing the adsorption of analytes. The main factors affecting the adsorption of phthalate esters, including the pH of the solution, humic acid, sample loading volume, adsorption time, and desorption conditions, were investigated and optimized. Under the conditions selected (pH 11, adsorption time 20 min, elution with 10 mL of acetonitrile, and concentration to 0.5 mL), concentration factors of 1,000 were achieved by extracting 500 mL of several environmental water samples with 0.1 g of MNP sorbent. The method detection limits obtained for di-n-propyl phthalate, di-n-butyl phthalate, dicyclohexyl phthalate, and di-n-octyl phthalate were 12.3, 18.7, 36.4, and 15.6 ng L-1, respectively. The recoveries of spiked samples ranged from 60 to 100%, with a low relative standard deviation (1-8%), which indicated good method precision.
内容类型	会议论文
源URL	[http://ir.rcees.ac.cn/handle/311016/24638]
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	Zhang, Xiao Le,Niu, Hong Yun,Zhang, Sheng Xiao,et al. Preparation of a chitosan-coated C-18-functionalized magnetite nanoparticle sorbent for extraction of phthalate ester compounds from environmental water samples[C]. 见:36th Colloquium Spectroscopicum Internationale. Eotvos Lorand Univ, Budapest, HUNGARY. AUG 30-SEP 03, 2009.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。