| 陈云生，李成，杨胜园，何爱桃.茜素红褪色分光光度法测定矿泉水中痕量溴酸根[J].南华大学学报(自然科学版),2009,23(3):58~60.[CHEN Yun-sheng,LI Cheng，YANG Sheng-yuan,HE Ai-tao.Decoloration Spectrophotometric Determination of Trace Bromate in Mineral Water with Alizarin Red[J].Journal of University of South China(Science and Technology),2009,23(3):58~60.] |
| 茜素红褪色分光光度法测定矿泉水中痕量溴酸根 |
| Decoloration Spectrophotometric Determination of Trace Bromate in Mineral Water with Alizarin Red |
| 投稿时间：2009-05-14 |
| DOI： |
| 中文关键词: 茜素红 溴酸根 褪色光度法 矿泉水 |
| 英文关键词:Alizarin red Bromate Decoloration spectrophotometry Mineral water |
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| 中文摘要: |
| 在0.60 mol/L的盐酸介质中，BrO-3与溴化钾反应生成单质溴，单质溴氧化茜素红使其褪色，褪色程度(ΔA)与BrO-3浓度成比例.据此建立了测定矿泉水中痕量溴酸根新方法.结果表明，茜素红最大吸收波长为421 nm，BrO-3的线性范围为0.4～1.6 μg/mL（r=0.998 8），回归方程为ΔA=50ρ+0.0024，检出限为0.12 μg/mL，样品分析相对标准偏差为1.37%～1.48%，加标回收率为96.2%～103.4%. |
| 英文摘要: |
| In the 0.60 mol/L HCl solution,BrO-3 could react with KBr to form simple substance bromine,Alizarin red was oxidized by the bromine and made it fading,The extent of the fading(ΔA) was in proportion with concentration of BrO-3.Based on those,the method was established for the determination of trace of trace BrO-3 in mineral water.Results:The maximum absorption peak of alizarin red lied at 421 nm.The linear range of BrO-3 was 0.4～1.6 μg/mL(r=0.998 8).The regression equation was ΔA=50ρ+0.0024.The lowest detection limit was 0.12 μg/mL.The samples analysis of the relative standard deviation were 1.371%～1.48%.The recoveries were 96.2%～103.4%. |
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