干旱区生态环境知识资源中心(Arid): 多壁碳纳米管用于富集水样中有机磷农药残留的研究

Arid

	多壁碳纳米管用于富集水样中有机磷农药残留的研究
其他题名	Study of Purified Multi-walled Carbon Nanotubes as a Sorbent of Solid Phase Extraction for Preconcentration of Organophosphorous Pesticides from Water Samples
	李权龙; 袁东星
来源期刊	厦门大学学报. 自然科学版
ISSN	0438-0479
出版年	2004
卷号	43 期号:4 页码:531-536
中文摘要	用50 mg经过纯化的多壁碳纳米管(PMWCNTs)装填成固相萃取(SPE)柱,采用GC-PFPD检测,研究了水样中8种有机磷农药在SPE柱上的泄漏体积(BTVs)和回收率,并将之与Oasis HLB SPE柱(1 mL)以及实验室自行装填的石墨化碳黑SPE柱(50 mg Carbopack B)的性能相比较.结果表明,因其高水溶性,浓度为20mug/L的甲胺磷在上述3种SPE柱上的BTVs均小于10 mL;浓度各为1mug/L的敌敌畏、二嚓农、甲基对硫磷、毒死蜱、对硫磷在3种SPE柱上的BTVs均大于200mL;PMWCNTs柱对极性有机磷农药敌百虫和乐果的保留能力高于Carbopaek B柱而低于Oasis HLB柱.用PMWCNTs柱萃取100 mL浓度各为2 mug/L的加标水样时,除了甲胺磷和敌敌畏外,6种有机磷农药的回收率均高于70%.分析实际水样时,PMWCNTs柱萃取和三氯甲烷液-液萃取所得的结果一致.PMWCNTs是一种潜在的SPE吸附剂.
英文摘要	Off-line solid phase extraction (SPE) coupled with GC-PFPD was applied in this study. 50mg purified multi-walled carbon nanotubes (PMWCNTs) were packed in a SPE cartridge for the extraction of 8 organophosphorous pesticides (OPPs) in water samples. Breakthrough volumes (BTVs) and recoveries of 8 OPPs on PMWCNTs cartridge were investigated and compared with those on laboratory-packed Car-bopack B cartridge (50 mg) and on Oasis HLB cartridge (1 mL), respectively. The results showed that the BTVs of 20 fxg/L methamidophos on three SPE cartridges were less than lOrnL due to its high water solubility; the BTVs of dichorvos, diazion, parathion-methyl, chlorpyrifos and parathion on three SPE cartridges were more than 200 mL (1 /xg/L for each analytes). For trichlorfon and dimethoate, PMWC-NTs cartridge showed stronger retention ability than Carbopack B cartridge, and weaker than Oasis HLB cartridge. Except trichlorfon and dimethoate, the recoveries of 6 OPPs were more than 70/^ when 100 mL water sample spiked with 2 Hg/L for each analyte was extracted with PMWCNTs cartridge. Some surface water samples were extracted with both PMWCNTs cartridge and traditional CHC13 liquid-liquid extraction method, and the results were comparable. It has been proven that PMWCNTs can be an excellent SPE sorbent.
中文关键词	多壁碳纳米管 ; 有机磷农药 ; 固相萃取
英文关键词	multi-walled carbon nanotubes organophosphorous pesticides) solid phase extraction
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:1660057
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205300
作者单位	厦门大学环境科学研究中心, 海洋环境科学国家教育部重点实验室, 厦门, 福建 361005, 中国
推荐引用方式 GB/T 7714	李权龙,袁东星. 多壁碳纳米管用于富集水样中有机磷农药残留的研究[J],2004,43(4):531-536.
APA	李权龙,&袁东星.(2004).多壁碳纳米管用于富集水样中有机磷农药残留的研究.厦门大学学报. 自然科学版,43(4),531-536.
MLA	李权龙,et al."多壁碳纳米管用于富集水样中有机磷农药残留的研究".厦门大学学报. 自然科学版 43.4(2004):531-536.