共 38 条
Temperature-controlled ionic liquid dispersive liquid-phase microextraction combined with HPLC with ultraviolet detector for the determination of fungicides
被引:38
作者:
Gao, Yuanyuan
[2
]
Zhou, Qingxiang
[1
]
Xie, Guohong
[3
]
Yao, Ziwei
[4
]
机构:
[1] China Univ Petr, Coll Geosci, Beijing 102249, Peoples R China
[2] Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China
[3] Henan Inst Sci & Technol, Coll Resources & Environm, Xinxiang, Peoples R China
[4] Natl Marine Environm Monitoring Ctr, Dalian, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Fungicides;
HPLC;
1-Octyl-3-methylimidazolium hexafluorophosphate;
Temperature-controlled ionic liquid dispersive liquid-phase microextraction;
ENVIRONMENTAL WATER SAMPLES;
BAR SORPTIVE EXTRACTION;
GAS-CHROMATOGRAPHY;
SENSITIVE DETERMINATION;
TRACE DETERMINATION;
ELECTRON-CAPTURE;
RESIDUES;
WINES;
FRUIT;
D O I:
10.1002/jssc.201200553
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
Present study described a simple, environmental benign, easy to operate, and determination method for fungicides including thiram, metalaxyl, diethofencarb, myclobutanil, and tebuconazole. The method is based on temperature-controlled ionic liquid dispersive liquid phase microextraction coupled to HPLC with ultraviolet detector. In the enrichment procedure, ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate [C8MIM][PF6] was used as the extraction solvent. Variable affecting parameters such as the volume of [C8MIM][PF6], temperature, extraction time, centrifuging time, and salting-out effect have been optimized in detail. Under the optimal conditions, this method has been found to have good linear relationship in the concentration range of 1.0100 mu g/L and excellent detection sensitivity with LODs (S/N = 3) in the range of 0.320.79 mu g/L. Precisions of proposed method were in the range of 3.75.9% for intraday and 7.811.0% for interday (RSDs, n = 6). The proposed method was used for the analysis of real water samples and good spiked recoveries at two different spiked levels were achieved in the range of 84.6102%.
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页码:3569 / 3574
页数:6
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