期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 407, 期 4, 页码 1231-1239出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-014-8336-0
关键词
Pipette-tip solid-phase extraction; sol-gel hybrid adsorbent; gamma-(methacryloyloxy)propyltrimethoxysilane; Cucumber
资金
- National Natural Science Foundation of China [31301464]
- Natural Science Foundation of Hebei Province [B2012201052]
A pipette-tip solid-phase extraction (PT-SPE) method using a sol-gel hybrid adsorbent has been developed. The method could be used for rapid screening of vegetable matrices for cyanazine and atrazine; assay of cucumbers is reported as an example. The sol-gel hybrid adsorbent was synthesized from tetraethyl orthosilicate (TEOS) as the precursor and gamma-(methacryloyloxy)propyltrimethoxysilane (KH570) as both surface modifying agent and monomer for the polymerization. Under the optimized conditions, good calibration linearity was obtained in the range 0.022-1.65 mu g g(-1) with correlation coefficients (r) a parts per thousand yen0.9996. Recovery at three spike levels ranged from 87.6 to 93.8 % with relative standard deviations a parts per thousand currency sign7.8 %. This extraction strategy has several advantages, for example ease of assembly, low cost, and high extraction efficiency, and is a potential pretreatment strategy for rapid screening of cyanazine and atrazine in vegetables.
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