| 罗丹明B褪色光度法测定微量溴酸根离子的研究 |
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| 引用本文： | 邢志强,康平利,韩光喜,李莹,吕改芳,邓桂春.罗丹明B褪色光度法测定微量溴酸根离子的研究[J].辽宁大学学报(自然科学版),2009,36(2):112-115. |
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| 作者姓名： | 邢志强 康平利 韩光喜 李莹 吕改芳 邓桂春 |
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| 作者单位： | 辽宁大学,化学院,辽宁,沈阳,110036 |
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| 摘 要： | 研究了罗丹明B与B rO3-的褪色反应,确定了最佳反应条件,建立了一种光度法测量微量溴酸根离子的新方法.结果表明：在盐酸介质中溴酸根氧化罗丹明B褪色,最大吸收波长为556 nm,方法的表观摩尔吸光系数ε5′56=1.5×10^5L.mol^-1.cm^-1,检出限为1.12×10^-8g.mL^-1,线性范围为0.0-18.0μg.（25 mL）^-1.用于化学试剂中溴酸根离子的测定,结果满意.
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| 关 键 词： | 罗丹明B 溴酸根离子 褪色光度法 |
Study on Determination of Trace Bromate by Decolor Spectrophotometric Method of Rhodamine B |
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| XING Zhi-qiang,KANG Ping-li,HAN Guang-xi,LI Ying,Lü Gai-fang,DENG Gui-chun.Study on Determination of Trace Bromate by Decolor Spectrophotometric Method of Rhodamine B[J].Journal of Liaoning University(Natural Sciences Edition),2009,36(2):112-115. |
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| Authors: | XING Zhi-qiang KANG Ping-li HAN Guang-xi LI Ying Lü Gai-fang DENG Gui-chun |
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| Institution: | College of Chemistry;Liaoning University;Shenyang 110036;China |
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| Abstract: | A new method for the determination of trace bromate is proposed in this paper.The optimum conditions for the oxidation of rhodamine B by bromate in hydrochloric acid medium are studied.The maximum absorption peak is located at 556 nm with an apparent molar absorptivity of 1.5×10 ^5 L·mol^-1 ·cm^-1.The detection limit is 1.12×10^-8 g·mL^-1 and the linear range is 0.0～18.0 μg·（25 mL）^-1 of bromate.The proposed method has been applied in determining of trace bromate in chemical reagents with satisfactory results. |
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| Keywords: | rhodamine B bromate decolour spectrophotometry |
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