Carbon nanotubes-reinforced hollow fibre solid-phase microextraction coupled with high performance liquid chromatography for the determination of carbamate pesticides in apples.
Carbon nanotubes-reinforced hollow fibre solid-phase microextraction coupled with high performance liquid chromatography for the determination of carbamate pesticides in apples.
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DOI：
10.1016/j.foodchem.2013.01.112
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发表时间：
2013-08
期刊：
影响因子：
8.8
通讯作者：
Xin-yue Song;Yan-ping Shi;Juan Chen
中科院分区：
文献类型：
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作者：
Xin-yue Song;Yan-ping Shi;Juan Chen
采用碳纳米管增强中空纤维固相微萃取（CNTs-HF-SPME）结合高效液相色谱-光电二极管阵列检测（HPLC-DAD）技术，建立了测定苹果中5种氨基甲酸酯类农药的高效、灵敏方法。通过添加表面活性剂将碳纳米管分散在水中，然后在毛细力和超声作用下将碳纳米管固定在HF的孔隙中。SPME装置被1-辛醇浸湿，放置在搅拌过的苹果样品中提取目标分析物。提取后，用HPLC-DAD解吸分析。在优化的提取条件下，富集因子范围为49 ~ 308，具有良好的纤维间重复性和批间重现性，且具有良好的线性范围和回收率。检出限为0.09 ~ 6.00ng/g。结果表明，该方法是测定苹果中微量氨基甲酸酯类农药的有效前处理和富集方法。
An effective and sensitive method to determinate five carbamate pesticides in apples was developed by using carbon nanotubes-reinforced hollow fibre solid-phase microextraction (CNTs-HF-SPME) combined with high performance liquid chromatography-photodiode array detection (HPLC-DAD). The CNTs were dispersed in water via adding surfactant, and then were held in the pores of HF supported by capillary forces and sonification. The SPME device, which was wetted with 1-octanol, was placed in a stirred apple samples to extract target analytes. After extraction, analytes were desorbed and analyzed using HPLC-DAD. Under the optimized extraction conditions, the enrichment factors were achieved in the range from 49 to 308 with good inter-fibre repeatability and batch-to-batch reproducibility, while good linearity ranges and recoveries were obtained. The limits of detection ranged from 0.09 to 6.00ng/g. Therefore, the results demonstrated that this novel method was an efficient pretreatment and enrichment procedure for the determination of trace carbamate pesticides in apples.