| 光度比浊法测定烟草中硫酸根的含量 |
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| 引用本文： | 谢卫,刘泽春,杨俊,赖伟玲. 光度比浊法测定烟草中硫酸根的含量[J]. 福建分析测试, 2004, 0(Z1) |
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| 作者姓名： | 谢卫 刘泽春 杨俊 赖伟玲 |
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| 作者单位： | 龙岩卷烟厂技术中心，龙岩卷烟厂技术中心，中国科学技术大学烟草与健康研究中心，龙岩卷烟厂技术中心 福建，龙岩 364000，福建，龙岩 364000，安徽，合肥 230052，福建，龙岩 364000 |
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| 摘 要： | 在丙二醇介质中,基于硫酸根离子与钡离子形成稳定的胶体沉淀,建立了光度比浊法测定烟草中硫酸根含量的分析方法。硫酸根浓度在0.0-60.0μg/mL范围内符合比耳定律,相关系数0.9992。用于测定烟草样品中的硫酸根含量,回收率范围95.8%-104.9%;变异系数1.7%(n=10)。样品测定结果与重量法基本一致,相对误差小于4.0%。方法操作简便、准确、快捷,具有实用价值。
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| 关 键 词： | 烟草 硫酸根 光度比浊法 |
Determination of sulfate radical in tobacco by turbidimetric method |
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| Xie Wei,Liu Zechun,Yang Jun,Lai Weiling. Determination of sulfate radical in tobacco by turbidimetric method[J]. Fujian Anal Ysis & Testing, 2004, 0(Z1) |
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| Authors: | Xie Wei Liu Zechun Yang Jun Lai Weiling |
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| Abstract: | In the propylene glyccol medium, a turbidimetric determination of sulfate radical was studied. The method was based on the reaction of sulfate radical with barium (Ⅱ) to form a stable collocidal precipitation. Beer's law is obeyed in the range 0-60. 0μg/mL of sulfate radical. The recovery obtained by standard addition method was 95. 8%-104. 9%. The relative standard deviations obtained (n=10) was less than 1.7%. The method is simple and rapid. The experimental results showed that the higher recovery and better repeatability comparing with gravimetric method. |
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| Keywords: | Tobacco Sulfate radical Turbidimetric determination |
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