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基于液芯光纤和CCD的分光光度法测定河水中的Cr(VI)
Determination of Trace Cr(VI) in River Water Using Liquid Core Optical Fiber and Charge Coupled Device
【Abstract】 A convenient and sensitive spectrometric system based on a liquid core optical fiber and a charge coupled device was constructed for the determination of chromium(VI) in river water.Diphenylcarbazide was added to Cr(VI) solution to form colored complex in the medium of perchloric acid.With a 35 cm long Teflon optical fiber,the limit of detection(LOD) was 0.4 μg·L-1,ten times lower than that of Chinese National Standard Procedure(GB7467-87).The method was applied to determine Cr(VI) in river water without any preconcentration.The recovery was 99%~107%.
- 【文献出处】 四川大学学报(自然科学版) ,Journal of Sichuan University(Natural Science Edition) , 编辑部邮箱 ,2006年03期
- 【分类号】X832
- 【被引频次】6
- 【下载频次】143