Position: Home > Articles > DETERMINATION OF CONDENSATION-TANNIS IN BETULA BARK BY THREE WAVELENGTH SPECTROPHOTOMETRY
Journal of Shandong Agricultural University(Natural Science Edition)
2008,39
(2)
23-25
三波长分光光度法测定白桦树皮中缩合鞣质含量
作 者：
孙宏;张泽
单 位：
齐齐哈尔大学化学化工学院;齐齐哈尔市环境监测中心
关键词：
白桦树皮;缩合鞣质;三波长分光光度法
摘 要：
建立了三波长分光光度法测定白桦树皮中缩合鞣质含量的分析方法。在强酸介质中,硫酸铁铵-铁氰化钾与缩合鞣质在室温下反应20 min,以儿茶素为标样,对白桦树皮中缩合鞣质进行测定。实验表明:线性范围为2μg.mL-1~14μg.mL-1,线性回归方程ΔA=83.321c+0.072,相关系数为0.9998。εmax为3.712×104L.mol-1.cm-1。检测限为0.32μg.mL-1。精密度为0.89%。回收率为95.5%~100.2%。该法操作简单,灵敏度高。
译 名：
DETERMINATION OF CONDENSATION-TANNIS IN BETULA BARK BY THREE WAVELENGTH SPECTROPHOTOMETRY
作 者：
SUN Hong 1,ZHANG Ze2(1.Chemical and Chemistry Engineering College of Qiqihar University,Qiqihar 161006,China;2.Qiqihar Environment Monitoring Center,Qipihar 161005,China)
关键词：
Betula bark;condensation-tannis;three wavelength spectrophotometry
摘 要：
A three-wavelength spectrophotometric method is proposed for determination of Condensation-tannis in Betula bark based on the reduction of potassium ferricyanide-ammonium ferric sulphate by Condensation-tannis in the acid medium.The linear range is from 2 μg·mL-1 to 14 μg·mL-1 and the limit of detection is 0.32 μg ·mL-1.The precision RSD is 0.89%.The rate of recovery is 95.5%～100.2%.
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