Enrichment and Detection of Dichlorvos and Methamidophos on Carbon Nanotubes

Sheng Long Tan; Xiao Ping Tang; Xu Dong Tang

doi:10.4028/www.scientific.net/AMR.886.275

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 886Enrichment and Detection of Dichlorvos and...

Enrichment and Detection of Dichlorvos and Methamidophos on Carbon Nanotubes

Abstract:

Multi-walled carbon nanotubes were used as solid phase extraction materials. Organophosphorus pesticide aqueous solution in a given concentration was enriched by carbon nanotubes and then eluted with eluant. The content of organo phosphorus pesticide in the eluent was evalutated with gas chromatograph and calculates recovery. At room temperature, the best enrichment condition was determined according to the enrichment time. By using ethyl acetate as eluent, elution condilions for higher recovery were determined according to the eluting temperture and time under neutral conditions. The results showed that carbon nanombes for dichlorvos enrichment approached 100% in weight after 3 hours,but only had limited influence on the enrichment of methamidophos. Under neutral conditions of 60°C and elution for 3 hours, dichlorvos recovery rate reached 75.9%. Therefore, carbon nanotubes can be used for dichlorvos extraction and analysis in actual water samples.

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Periodical:

Advanced Materials Research (Volume 886)

Pages:

275-280

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.886.275

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Online since:

January 2014

Authors:

Sheng Long Tan, Xiao Ping Tang, Xu Dong Tang*

Keywords:

Carbon Nanotube (CN), Detection, Dichlorvos, Enrichment, Gas Chromatography, Solid-Phase Extraction

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* - Corresponding Author

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