| 紫外分光光度法直接测定三聚氰胺的研究 |
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| 引用本文： | 黄宇,杨凤琴,汤建中,樊艳茹. 紫外分光光度法直接测定三聚氰胺的研究[J]. 广州化工, 2011, 39(5): 111-112,135 |
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| 作者姓名： | 黄宇 杨凤琴 汤建中 樊艳茹 |
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| 作者单位： | 1. 宁夏医科大学药学院,宁夏,银川,750004;宁夏回药现代化工程技术研究中心,宁夏,银川,750004
2. 宁夏医科大学检验学院,宁夏,银川,750004 |
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| 基金项目： | 宁夏自然科学基金，宁夏医科大学面上项目 |
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| 摘 要： | 利用三聚氰胺的甲醇溶液在203 nm波长处有最大吸光度,建立了紫外分光光度法直接测定三聚氰胺的新方法,并研究了反应的各种影响因素。该方法对三聚氰胺的检出限为1.5×10-4 mg/mL;线性范围为0.25×10-3～2.5×10-3 mg/mL,对浓度为1.25×10-3 mg/mL的三聚氰胺进行11次平行测定,得到相对标准偏差为3.8%。将本法用于合成样品中三聚氰胺的测定,回收率为100.3%～101%,结果令人满意。
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| 关 键 词： | 紫外分光光度法 三聚氰胺 |
Direct Determination of Melamine by UV Spectrophotometry |
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| HUANG Yu,YANG Feng-qin,TANG Jian-zhong,FAN Yan-ru. Direct Determination of Melamine by UV Spectrophotometry[J]. GuangZhou Chemical Industry and Technology, 2011, 39(5): 111-112,135 |
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| Authors: | HUANG Yu YANG Feng-qin TANG Jian-zhong FAN Yan-ru |
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| Affiliation: | 1,2 (1 Pharmacy College,Ningxia Medical University,Ningxia Yinchuan 750004;2 Ningxia Research Center of Modern Hui Medicine Engineering and Technology,Ningxia Yinchuan 750004;3 Medical Test College, Ningxia Medical University,Ningxia Yinchuan 750004,China) |
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| Abstract: | A spectrophotometric method for the quantitative determination of melamine was developed.The UV spectrum of the melamine in aqueous solution of methanol presented a maximum of absorption at 203 nm.The detection limit was observed to be 5×10-4 mg/mL.Linear scope ranged from 0.25×10-3 mg/mL to 2.5×10-3 mg/mL.The parallel determination was done of 1.25×10-3 mg/mL melamine for 11 times and the relative standard deviation was 3.8%.Satisfactory results were obtained by the proposed method for determination of trace amount of melamine in synthetic samples.The method applied to determine melamine in synthetic samples can got satisfactory results,and the recovery rate was 100.3%～101%. |
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| Keywords: | UV spectrum melamine |
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