| 流动注射分析法测定保险粉(简报) |
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| 引用本文： | 周增柟,陈健,范小芹,李芳.流动注射分析法测定保险粉(简报)[J].东华大学学报(自然科学版),1991(Z1). |
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| 作者姓名： | 周增柟 陈健 范小芹 李芳 |
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| 作者单位： | 中国纺织大学纺织化学工程系分析化学教研室，中国纺织大学纺织化学工程系分析化学教研室，中国纺织大学纺织化学工程系染整专业，中国纺织大学纺织化学工程系染整专业 89级硕士研究生，89级本科毕业生 |
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| 摘 要： | 本文讨论应用流动注射分析结合光度测定进行低亚硫酸钠(保险粉)的测试。所采用的载流为K_2Cr_2O_710g溶解于111.8×10~(-1)mol/l的H_2SO_4溶液,流速为2.8ml/min。在590nm处测其吸光度。试样通过填有海绵的玻璃管直接抽吸入FIA仪器进行测定。与传统的碘量法相比,其相对误差小于1.5％。数据表明有良好的重现性。
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| 关 键 词： | 分光光度法 流动注射分析 低亚硫酸钠 |
THE MEASUREMENT OF SODIUM HYDROSULFITE WITH FLOW I N JECTION ANALYSIS |
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| Zhou Zengnan,Chen Jian,Fan Xiaoqin,Li Fang.THE MEASUREMENT OF SODIUM HYDROSULFITE WITH FLOW I N JECTION ANALYSIS[J].Journal of Donghua University,1991(Z1). |
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| Authors: | Zhou Zengnan Chen Jian Fan Xiaoqin Li Fang |
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| Institution: | Department of Textile Chemical Engineering |
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| Abstract: | In this paper the measurement of Na_2S_2O_4 with FIA combined with spectrophometry was discussed. 10g K_2Cr_2O_7 dissolved in 110.18 mol/l H_2SO_4 is used as carrier. The flow rate is 2.8ml/min. The absorbance is monitored at 590nm. The sample is injccted directly through the spongc-filled glass tube into FIA system for measurement. The concentration of the Na_2S_2O_4 in sample are evaluated from the response by using calibration curves prepared. In comparasion with the iodometric method, the relative error is less than 1.5%. Data show good reproducibility. |
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| Keywords: | spectrophotometry flow injection analysis sodium hydrosulfite |
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