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Determination of chlorpyrifos in environmental water samples by dispersive liquid-liquid microextraction with solidification of a floating organic drop followed by gas chromatography with flame photometry detection
Jianfei Xiong1,2; Zhuo Guan1; Guangming Zhou2; Xiangyu Tang1; Yujuan Lv2; Honglan Wang1,3
Corresponding AuthorXiangyu Tang
2012
Source PublicationAnalytical Methods
ISSN0003-2654
Volume4Pages:3246–3250
Abstract

Dispersive liquid-liquid microextraction with solidification of a floating organic drop (DLLME-SFO) followed by gas chromatography with flame photometry detection (GC-FPD) has been adopted and improved for determining chlorpyrifos in environmental water samples. A mixture of 1.5 mL of methanol (disperser solvent) and 40 mu L of 1-dodecanol (extraction solvent) was quickly injected into 25 mL of a water sample with a liquid-transferring device. After five minutes, 0.5 g of sodium chloride was added into the aqueous solution and the sample vial was shaken by hand. Another five minutes later, the sample was centrifugated at 3400 rpm for 3 min, and then the centrifugal tube was placed in an ice bath. When the extraction solvent floating on the top of the aqueous solution had solidified, it was transferred into another vial and diluted with 60 mu L of ethyl acetate. The extraction recovery (ER) and the enrichment factor (EF) were 79.02% and 232.42, respectively. The limit of detection (LOD) (S/N = 3) was 0.02 mu g L-1, the linear range was 0.05-4 mu g L-1, the relative standard deviation (RSD) was in the range of 3.93-7.29% and the recoveries of spiked samples ranged from 84.34% to 110.20%.

KeywordSolid-phase Microextraction Organophosphorus Pesticides Mass-spectrometry Extraction Preconcentration Optimization Microdrop
DOI10.1039/c2ay25451d
Indexed BySCI
Language英语
WOS IDWOS:000309238300027
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18071
Collection山地表生过程与生态调控重点实验室
Affiliation1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences
2.Southwest University
3.Northwest A&F University
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Jianfei Xiong,Zhuo Guan,Guangming Zhou,et al. Determination of chlorpyrifos in environmental water samples by dispersive liquid-liquid microextraction with solidification of a floating organic drop followed by gas chromatography with flame photometry detection[J]. Analytical Methods,2012,4:3246–3250.
APA Jianfei Xiong,Zhuo Guan,Guangming Zhou,Xiangyu Tang,Yujuan Lv,&Honglan Wang.(2012).Determination of chlorpyrifos in environmental water samples by dispersive liquid-liquid microextraction with solidification of a floating organic drop followed by gas chromatography with flame photometry detection.Analytical Methods,4,3246–3250.
MLA Jianfei Xiong,et al."Determination of chlorpyrifos in environmental water samples by dispersive liquid-liquid microextraction with solidification of a floating organic drop followed by gas chromatography with flame photometry detection".Analytical Methods 4(2012):3246–3250.
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