| 比色法快速测定党参中二氧化硫的残留量 |
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| 引用本文： | 薛艳.比色法快速测定党参中二氧化硫的残留量[J].安徽农业科学,2012,40(26):12859-12860. |
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| 作者姓名： | 薛艳 |
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| 作者单位： | 安徽省阜阳市产品质量监督检验所,安徽阜阳,236112 |
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| 摘 要： | 目的]测定党参中二氧化硫的残留量。方法]采用比色法快速测定党参中二氧化硫的残留量。结果]在0.0～48.0μg/ml范围内,二氧化硫浓度与吸光度的线性关系良好,相关系数R为0.999 2,相对标准偏差在0.54%～1.66%;加标回收率为90.1%～103.7%,RSD为1.16%～5.17%(n=6),且具有良好的重现性和稳定性。应用测试结果表明,比色法的测定结果与酸蒸馏法相似。结论]该方法简便、快速、灵敏度高、干扰少,可用于党参中二氧化硫的残留量测定。
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| 关 键 词： | 党参(RADIX CODONOPSIS) 二氧化硫含量 分光光度计法 酸蒸馏碘滴定法 |
Rapid Determination of Sulfur Dioxide Content in RADIX CODONOPSIS by Colorimetric Method |
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| XUE Yan.Rapid Determination of Sulfur Dioxide Content in RADIX CODONOPSIS by Colorimetric Method[J].Journal of Anhui Agricultural Sciences,2012,40(26):12859-12860. |
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| Authors: | XUE Yan |
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| Institution: | XUE Yan(Fuyang Institute of Product Quality Supervision and Inspection,Fuyang,Anhui 236112) |
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| Abstract: | Objective] To determine the residue of sulfur dioxide in RADIX CODONOPSIS.Method] The residue of sulfur dioxide in RADIX CODONOPSIS was rapidly determined by colorimetric method.Result] The concentration of sulfur dioxide showed a good linear relation with the absorbance within the range of 0.0-48.0 μg/ml,the correlation coefficient R was 0.999 2,the relative standard deviation was 0.54%-1.66%,and the recoveries was 90.1%-103.7%,the RSD was 1.16%-5.17%(n=6) with good reproducibility and stability.The application test results showed that the colorimetric method had good uniformity when compared with classic acid distillation.Conclusion] The method is simple and rapid with high sensitivity and less disturbance,thus can be used for the determination of sulfur dioxide in RADIX CODONOPSIS. |
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| Keywords: | RADIX CODONOPSIS Content of sulfur dioxide Spectrophotometry Acid distillation iodine titration |
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