title: An Improved Pneumatic Nebulization Gas-Solid Microextraction Device Used to Detect Triazine Herbicides in White Spirit.
abstract: The pneumatic nebulization gas-solid microextraction device fascinating us is because it directly atomized organic samples to cross a solid-phase microextraction (SPME) cartridge without any pretreatment. In this work, both the spray chamber and SPME column of the extraction device were heated. We found that this would significantly improve the extraction efficiency of this method. Then, this method was used to detect seven triazine herbicides (atraton, desmetryn, atrazine, terbumeton, terbuthylazine, terbutryn, and dipropetryn) in drinking alcohol samples. The experimental results indicated that this extraction procedure could conveniently, efficiently and accurately concentrate any triazine herbicides from drinking alcohol samples. The limits of detection (LODs) were from 0.08 to 0.23 μg L(-1), the limits of quantification (LOQs) were from 0.27 to 0.78 μg L(-1). We used this method to detect triazine herbicides in five white spirit samples. Four concentrations were chosen (5, 25, 50 and 100 μg L(-1)) as the amounts of spikes to investigate the recovery and precision of the present PN-GSME method. The recoveries ranged from 95.91 to 106.67%. The relative standard deviations were not more than 6.51%. Also this method matches the requirement of the maximum residue limits of the European Union.
authors: College of Chemistry, Jilin University.
authors: Hui
authors: H
authors: Xu
authors: Qiang
authors: Q
authors: Fei
authors: Hongyan
authors: H
authors: Shan
authors: Yanfu
authors: Y
authors: Huan
authors: Hongyu
authors: H
authors: Mi
authors: Hanqi
authors: H
authors: Zhang
authors: Guanghua
authors: G
authors: Li
authors: Guodong
authors: G
authors: Feng
mesh_terms: D000434:Alcoholic Beverages / Q000032:analysis*; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004867:Equipment Design; D000431:Ethanol / Q000737:chemistry; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination; D005740:Gases; D006540:Herbicides / Q000032:analysis*; D057230:Limit of Detection; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000295:instrumentation* / Q000379:methods*; D012997:Solvents / Q000737:chemistry; D014227:Triazines / Q000032:analysis / Q000737:chemistry*
chemical_list: D005740:Gases; D006540:Herbicides; D012997:Solvents; D014227:Triazines; D000431:Ethanol