Detection of Organophosphorous Pesticides in Soil Samples with Multiwalled Carbon Nanotubes Coating SPME Fiber
| Autor: | Li Ying, Mengkui Tian, Xilan Feng, Jiang Xiaoying, Jing Ruijun |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Chromatography
Gas Materials science Soil test Stainless steel fiber Health Toxicology and Mutagenesis engineering.material Toxicology Solid-phase microextraction Organophosphorus Compounds Limit of Detection Desorption Soil Pollutants Dimethylpolysiloxanes Fiber Pesticides Solid Phase Microextraction Detection limit Chromatography Nanotubes Carbon Extraction (chemistry) General Medicine Pollution Carbon engineering Gas chromatography Environmental Monitoring |
| Zdroj: | Bulletin of Environmental Contamination and Toxicology. 93:769-774 |
| ISSN: | 1432-0800 0007-4861 |
| DOI: | 10.1007/s00128-014-1379-2 |
| Popis: | A headspace solid phase microextraction (HS-SPME) technique using stainless steel fiber coated with 20 μm multi-walled carbon nanotubes (MWCNTs) and gas chromatography with thermionic specific detector (GC-TSD) was developed to determine organophosphorous pesticides (OPPs) in soil. Parameters affecting the extraction efficiency such as extraction time and temperature, ionic strength, the volume of water added to the soil, sample solution volume to headspace volume ratio, desorption time, and desorption temperature were investigated and optimized. Compared to commercial polydimethylsiloxane (PDMS, 7 μm) fiber, the PDMS fiber was better to be corrected as phorate, whereas the MWCNTs fiber gave slightly better results for methyl parathion, chlorpyrifos and parathion. The optimized SPME method was applied to analyze OPPs in spiked soil samples. The limits of detection (LODs, S/N = 3) for the four pesticides were |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink