极大3无关组的函数特征  

GC Determination of Residual Amount of Fenpropathrin in Vegetable with MWCNT′s-Solid Phase Extraction

作　　者：李昌秀[1] 谭伟[1] 李杨梅[1] 胡晓旭[1] 王红斌[1] 杨敏[1] 

机构地区：[1]云南民族大学化学与生物技术学院,民族药资源化学国家民族事务委员会-教育部重点实验室,昆明650500

出　　处：《理化检验（化学分册）》2013年第6期709-712,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家自然科学基金（10971246）; 广州市属高校科技计划（08C017）资助项目

摘　　要：有限域F_q上r维向量空间F_q~r中的极大n元t-无关组是一个很重要的组合结构,可以用来构造强部分平衡设计,从而可构造最优认证码;也可用来构造正交阵列.本文揭示有限域F_2上r维向量空间F_2~r中极大3无关组的函数特征,即每一个极大3无关组恰好是某个线性函数的支撑.Sample of vegetable was extracted with acetonitrile,and the supernatant was taken and evaporated to near dryness.The residue was dissolved with n-hexane,and purified by passing through a column packed with 100 mg/6 mL of multiwall carbon nanotubes（MWCNT′s）.The column was eluted with n-hexane.The eluate obtained was evaporated to near dryness and made up to 5.00 mL with n-hexane.The solution was used for GC analysis using either ZB-2 or DB-5MS chromatographic column for separation and ECD for detection.Linearity range of fenpropathrin was kept between 0.075-1.25 mg·L-1,with detection limits（3S/N） of 1.07 μg·kg-1（with DB-5MS column） and 0.769 mg·kg-1（with ZB-2 column）.Tests for recovery and precision were tested by addition of 0.075,0.25,1.00 mg·kg-1 of standard solution,and analyzed by the proposed method,values of recovery obtained were in the range of 83.9%-103% and values of RSD′s（n=6） in the range of 0.60%-3.2%.

关 键 词：强部分平衡设计 极大无关组 线性函数 支撑 

分 类 号：O657.7[理学—分析化学]