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2008•CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION)Requires access

Determination of Phorate in Water Using Dispersive Liquid-Liquid Microextraction Coupled with Gas Chromatography

Hong Xie

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Abstract

A novel method for the determination of phorate in water sample has been developed using dispersive liquid liquid microextraction(DLLME) coupled with gas chromatography by flame ionization detection(FID).The influence of extraction parameters including extraction solvent,disperser,solvent and volume,temperature,centrifugal speed and time was investigated.Under the optimum conditions the enrichment factor was 300 and the limit of detection was 0.001 μL/L.The linear range was 0.01-10 μL/L,the R2 was 0.9986 and the recovery was 104% for phorate.The relative standard deviations(RSDs) were 6.7%.Analytical results obtained by DLLME were compared with those generated by single-drop microextraction(SDME) and liquid phase mircoextraction(LPME) in water sample.The advantage of the DLLME technique is simple and fast(less than 5 min) with high recovery and enrichment factor.

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What this paper is about

A novel method for the determination of phorate in water sample has been developed using dispersive liquid liquid microextraction(DLLME) coupled with gas chromatography by flame ionization detection(FID).The influence of extraction parameters including extraction solvent,disperser,solvent and volume,temperature,centrifugal speed and time was investigated.Under the optimum conditions the enrichment factor was 300 and the limit of detection was 0.001 μL/L.The linear range was 0.01-10 μL/L,the R2 was 0.9986 and the recovery was 104% for phorate.The relative standard deviations(RSDs) were 6.7%.Analytical results obtained by DLLME were compared with those generated by single-drop microextraction(SDME) and liquid phase mircoextraction(LPME) in water sample.The advantage of the DLLME technique is simple and fast(less than 5 min) with high recovery and enrichment factor.

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Available abstract

A novel method for the determination of phorate in water sample has been developed using dispersive liquid liquid microextraction(DLLME) coupled with gas chromatography by flame ionization detection(FID).The influence of extraction parameters including extraction solvent,disperser,solvent and volume,temperature,centrifugal speed and time was investigated.Under the optimum conditions the enrichment factor was 300 and the limit of detection was 0.001 μL/L.The linear range was 0.01-10 μL/L,the R2 was 0.9986 and the recovery was 104% for phorate.The relative standard deviations(RSDs) were 6.7%.Analytical results obtained by DLLME were compared with those generated by single-drop microextraction(SDME) and liquid phase mircoextraction(LPME) in water sample.The advantage of the DLLME technique is simple and fast(less than 5 min) with high recovery and enrichment factor.

Key concepts: Chemistry, Disperser, Chromatography, Enrichment factor, Phorate, Detection limit, Extraction (chemistry), Flame ionization detector

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