Flow analysis for trace amounts of copper by ion-exchanger phase absorptiometry with 4,7-diphenyl-2,9-dimethyl-1,10-phenanthroline disulphonate and its application to the study of karst groundwater storm runoff
✍ Scribed by Kazuhisa Yoshimura; Shiro Matsuoka; Youji Inokura; Ushio Hase
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 749 KB
- Volume
- 268
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Ion-exchanger phase absorptlometry was applied to flow analysis for trace amounts of copper in water The increase m the absorbance of the coloured complex wth 4,7-d~phenyl-2,9-d~methyl-1,l0-phenanthrolme dlsulphonate, which was concentrated on-line on to an ion exchanger packed m a flow-through cell, could be measured contmuously wth a spectrophotometer at 484 nm The detection limit was 0 08 ng cme3 wth 8 3 cm3 of sample solution The proposed method pernutted a highly sensitive, selective determmatlon of copper m karst groundwater samples wlthout any preconcentratlon By measunng the copper concentration response m water after a storm, the mfiltratlon rate of ram water from the sod zone to the underground river of a karst groundwater system could be evaluated to be about lo-20 m day-'