| 分光光度法测定L-天冬氨酸锰中锰的含量 |
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| 引用本文： | 赵慧,周玉丽,王永秋.分光光度法测定L-天冬氨酸锰中锰的含量[J].化学工程师,2010(9):26-28,32. |
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| 作者姓名： | 赵慧 周玉丽 王永秋 |
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| 作者单位： | 淮北师范大学,化学与材料科学学院,安徽,淮北,235000 |
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| 摘 要： | 本文介绍了分光光度法测定L-天冬氨酸锰中锰含量的方法,L-天冬氨酸锰首先在浓H2SO4-H2O2体系中消化,然后在H3PO4-KIO4的氧化体系中,于526nm处测定吸光度。在2.0~20μg.mL-1线性范围内与吸光度呈良好的线性关系,线性方程为:A=39.77162C-0.00475,相关系数r=0.99999,样品平均回收率为99.7%,标准偏差0.14%。
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| 关 键 词： | 光度法 锰 高碘酸钾 L-天冬氨酸锰 |
Determination of manganese in manganeseby L-aspartate by spectrophotometry |
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| ZHAO Hui,ZHOU Yu-li,WANG Yong-qiu.Determination of manganese in manganeseby L-aspartate by spectrophotometry[J].Chemical Engineer,2010(9):26-28,32. |
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| Authors: | ZHAO Hui ZHOU Yu-li WANG Yong-qiu |
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| Affiliation: | (School of Chemistry and Material Sciences,Huaibei Normal Univesity,Huaibei 235000,China) |
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| Abstract: | A method for the determination of manganese in manganese L-aspartate by spectrophotometry was established.At first,manganese L-aspartate was digested in sulfuric acid-hydrogen peroxide system.Then determine the absorbance at 526 nm in H3PO4-KIO4 oxidation system.Within the range of 2.0 to 20μg·mL^-1,it had the best linear correlation between concentration and absorbance.The linear equation was expressed as following： A=39.77162C-0.00475,and the correlation coefficient r was 0.99999.The average recovery ratio was 99.7% and the RSD was 0.14%. |
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| Keywords: | spectrophotometry manganese manganese L-aspartate potassium periodate |
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