摘要
为同时测定烟叶中的多种阴离子，采用去离子水60℃下超声提取30min，Dionex AS18作分离柱、IonPac AG18作保护柱、ASRS-ULTRA Ⅱ作再生抑制器、23．0mmol／L KOH溶液作流动相（流速1．00mL／min），用电导检测器测定了烟叶样品中F^-、Cl^-、NO2^-、Br^-、SO4^2-、NO3^-的含量。结果表明，该法回归方程的线性相关系数为0．9940～0．9988，相对标准偏差≤2．63％，检测限0．01～0.06μg／mL，回收率95．0％～105．0％。
Six inorganic anions including F^- , Cl^- , NO2^- , Br^- , SO4^2- and NO3^- in tobacco leaf samples were extracted by ultrasonic wave with deionized water at 60℃ for 30 minutes, separated on Dionex AS18 column, with IonPac AG18 as guard column and ASRS-ULTRA 11 as regenerative depressor, using the solution of 23mmol/L KOH as eluent （flow rate： 1.00mL/min）, and detected by conductivity detector. It was found that the recoveries of the method were between 95.0% and 105.0%, the relative standard deviation was ≤2.63 %, the correlation coefficients of linear regression equations were from 0. 9940 to 0.9988 and the detection limits of the anions were in the range of 0.01 to 0.06μg/mL.
出处
《烟草科技》
EI
CAS
北大核心
2006年第11期37-41,共5页
Tobacco Science & Technology
关键词
离子色谱
烟叶
阴离子
超声波提取
Ion chromatography
Tobacco leaf
Anion
Ultrasonic extraction
