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流动注射在线分离预浓集分光光度法测定环境水样中的痕量铬(Ⅵ)
Determination of trace chromium(Ⅵ) in environmental waters using on-line separation and preconcentration-flow injection spectrophotometry
【摘要】 利用自制微型离子交换柱 ,采用流动分析技术 ,对含铬 (Ⅵ )环境水样在线自动化分离和预浓集处理 ,联用分光光度检测手段 ,实现了在线自动化样品分离富集及测定。方法的线性范围是 1~ 40ng mL铬 (Ⅵ )。用于测定井水、自来水、电镀液、电镀废液、电镀排放液中的痕量铬 (Ⅵ ) ,回收率在 95 .7%~ 1 0 5 %之间
【Abstract】 A new method for on-line separation and preconcentration of trace amounts of chromium(Ⅵ) in natural waters and industrial waste waters was developed by using self-made ion-exchange micro-column and flow injection analysis technology. Linear range of determination was (1~40) ng/mL. Samples of natural waters, electroplating liquor, electroplating waste and electroplating effluent were analyzed by the developed procedure with satisfactory results. Recoveries of the method was between 95.7%~105%.
【关键词】 流动注射;
分离预浓集;
分光光度法;
铬(Ⅵ);
【Key words】 Flow injection; Separation and preconcentration; Spectrophotometry; Chromium(Ⅵ);
【Key words】 Flow injection; Separation and preconcentration; Spectrophotometry; Chromium(Ⅵ);
【基金】 河南省教委自然科学基金(1999150 0 3 0 );河南省自然科学基金 (0 2 110 2 0 2 0 0 )
- 【文献出处】 分析试验室 ,Analytical Laboratory , 编辑部邮箱 ,2004年01期
- 【分类号】O657.3
- 【被引频次】15
- 【下载频次】195