毛竹叶中氰化物的提取及其含量测定

journal6 ›› 2009, Vol. 30 ›› Issue (2): 82-84.

毛竹叶中氰化物的提取及其含量测定

（吉首大学化学化工学院,湖南吉首 416000）

出版日期:2009-03-25 发布日期:2012-04-25
作者简介:李永福（1981-），男，山东德州人，吉首大学化学化工学院硕士研究生，主要从事分析化学研究.

Extraction and Determination of Cyanide from Leaves of Phyllostachys Pubescens

(College of Chemistry and Chemical Engineering，Jishou University，Jishou 416000，Hunan China)

Online:2009-03-25 Published:2012-04-25

摘要/Abstract

摘要：建立了以水蒸气蒸馏法提取、采用离子选择性电极法测定毛竹竹叶中氰酸根离子的方法.以H₃BO₃溶液为离子强度剂,在18～25 ℃条件下中速搅拌,pH值12.0碱性介质中,测量范围为0.1～10.0 μg·g^-1,RSD (n=6)为1.1%～4.2%,回收率在96.0%～102.0%之间.方法具有操作简便、快速、灵敏度高等优点,测定结果满意.

关键词： 水蒸气蒸馏, 离子选择性电极法, 毛竹, 氰化物

Abstract: Extraction of cyanide from leaves of phyllostachys pubescens by steam distillation method has been performed.Cyanate ion was well determinated by ion-selective electrode using H₃BO₃ as ionic strength agent at the temperature from 18 ℃ to 25 ℃ with medium stirring speed in the pH was 12 alkaline medium.Under the optimum conditions，the measured scope ranged from 0.1 μg·g^-1 to 10.0 μg·g^-1 with the relative standard deviation of 1.1%～4.2% (n=6).The recoveries of CN- ranged from 96.0% to 102.0%.The method has the advantages of simple operation，high sensitivity and high sample throughput.The method has been applied to the determination of cyanate ion and the results are satisfactory.

Key words: steam distillation, ion-selective electrode, phyllostachys pubescens, cyanide

李永福, 段友构. 毛竹叶中氰化物的提取及其含量测定[J]. journal6, 2009, 30(2): 82-84.

LI Yong-Fu, DUAN You-Gou. Extraction and Determination of Cyanide from Leaves of Phyllostachys Pubescens[J]. journal6, 2009, 30(2): 82-84.