中文摘要：本文通过水热法成功碳化稻壳生物材料，碳化后表面积大且稳定性好，然后通过溶胶-凝胶技术将其涂抹在不锈钢丝上制备固相微萃取纤维，并与气相色谱-质谱联用痕量检测蔬菜样本中十二种农药（速灭威、仲丁威、茚虫威、乙霉威、甲拌磷、特丁硫磷、马拉硫磷、吡虫啉、噻虫嗪、噻嗪酮、啶虫脒、噻虫嗪）残留。在最佳条件下，西红柿样本线性范围为0.2-75.0 μg/kg，黄瓜样本线性范围为0.3-60.0 μg/kg，相关系数在0.9959-0.9983范围，西红柿和黄瓜样本检测限分别为0.01-0.05μg/kg和0.03-0.10μg/kg，加标样本回收率范围为76%-104%，相对标准偏差小于12%。
外文摘要：In this work, a barley husk biomaterial was successfully carbonized by hydrothermal method. The carbon had a high specific surface area and good stability. It was coated onto a stainless steel wire through sol-gel technique to prepare a solid-phase microextraction fiber for the extraction of trace levels of twelve pesticides (tsumacide, fenobucarb, indoxacarb, diethofencarb, thimet, terbufos, malathion, thiamethoxam, imidacloprid, buprofezin, acetamiprid, thiamethoxam) from vegetable samples prior to gas chromatography-mass spectrometric (GC-MS) detection. The main experimental parameters that could influence the extraction efficiency such as extraction time, extraction temperature, sample pH, sample salinity, stirring rate, desorption temperature and desorption time, were investigated. Under the optimized conditions, the linearity was observed in the range of 0.2-75.0 mu gkg(-1) for tomato
samples, and 0.3-60.0 mu gkg(-1) for cucumber samples, with the correlation coefficients (r) ranging from 0.9959 to 0.9983. The limits of detection of the method were 0.01-0.05 mu gkg(-1) for tomato samples, and 0.03-0.10 mu gkg(-1) for cucumber samples. The recoveries of the analytes for the method from spiked samples were in the range of  76%-104%, and the precision, expressed as the relative standard deviations, was less than 12%. (C) 2017 Elsevier B.V. All rights reserved.
 
外文关键词：Barley husk biomaterial carbon, Solid-phase microextraction, Gas chromatography-mass spectrometry, Pesticides, Tomato and cucumber
作者：Liang, Weiqian; Wang, Juntao; Zang, Xiaohuan; Dong, Wenhuan; Wang, Chun;Wang, Zhi
作者单位：Hebei Agr Univ, Coll Sci, Baoding 071001, Hebei, Peoples R China.
期刊名称：JOURNAL OF CHROMATOGRAPHY A
期刊影响因子：3.926
出版年份：2017
出版刊次：3
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