| 化工用水中重金属离子铬（VI）的测定 |
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| 引用本文： | 柴红梅,高楼军,张惠.化工用水中重金属离子铬（VI）的测定[J].延安大学学报(自然科学版),2010,29(1):68-70. |
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| 作者姓名： | 柴红梅 高楼军 张惠 |
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| 作者单位： | 延安大学,化学与化工学院,陕西,延安,716000 |
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| 基金项目： | 陕西省教育厅专项基金，延安大学创新计划项目 |
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| 摘 要： | 研究了在pH=5.0的HAc-NaAc缓冲溶液中,微量铬（VI）催化H2O2氧化茜素红和亚甲基蓝褪色的指示反应。建立了双波长双指示剂催化动力学光度法测定微量铬（VI）的新方法。方法的线性范围为1.0-5.0μg/25 mL,检出限为2.57×10-3μg/mL。该方法操作简单,灵敏度较高,选择性良好,用于化工用水中微量铬（VI）的测定,回收率在98.5-102.5%之间,结果满意。
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| 关 键 词： | 化工用水 铬（VI） 双波长 双指示剂 催化光度法 |
Determination of Heavy Metal Cr(VI) in Industrial Water |
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| CHAI Hong-mei,GAO Lou-jun,ZHANG HUI.Determination of Heavy Metal Cr(VI) in Industrial Water[J].Journal of Yan'an University(Natural Science Edition),2010,29(1):68-70. |
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| Authors: | CHAI Hong-mei GAO Lou-jun ZHANG HUI |
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| Institution: | CHAI Hong-mei,GAO Lou-junZHANG HUI (College of Chemistry , Chemical Engineering,Yanan University,Yanan,716000,China) |
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| Abstract: | A new dual-wavelength dual-indicator catalytic kinetic spectrophotometric method for the determination of trace chromium(VI) was studied.The method was based on the chromium(VI) catalyzing oxidized of alizarin red and methylene blue mixed indicator fading reaction by hydrogen peroxide in the HAc-NaAc medium.The method has been applied satisfactorily to the determination of heavy metals chromium(VI) ions in chemical water samples with recovery of 98.7% ~ 100.3%. |
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| Keywords: | industrial water chromium(VI) dual-wavelength dual-indicator catalytic kinetic spectrophotometric |
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