| Analytica Chimica Acta | onAcademic

来自 : www.onacademic.com/detail/jour 发布时间：2021-03-25

Author: Kazuhisa Yoshimura Shiro Matsuoka Youji Inokura Ushio Hase

Journal: Analytica Chimica Acta

Issue Date: 1992

Abstract(summary):
Ion-exchanger phase absorptiometry was applied to flow analysis for trace amounts of copper in water. The increase in the absorbance of the coloured complex with 4,7-diphenyl-2,9-dimethyl-1,10-phenanthroline disulphonate, which was concentrated on-line on to an ion exchanger packed in a flow-through cell, could be measured continuously with a spectrophotometer at 484 nm. The detection limit was 0.08 ng cm 3 with 8.3 cm3 of sample solution. The proposed method permitted a highly sensitive, selective determination of copper in karst groundwater samples without any preconcentration. By measuring the copper concentration response in water after a storm, the infiltration rate of rain water from the soil zone to the underground river of a karst groundwater system could be evaluated to be about 10 20 m day 1.

Page: 225-233


Ion-exchanger phase absorptiometry was applied to flow analysis for trace amounts of copper in water. The increase in the absorbance of the coloured ...onAcademic ；Science；Technology；Medicine；researchIon-exchanger phase absorptiometry was applied to flow analysis for trace amounts of copper in water. The increase in the absorbance of the coloured complex with 4,7-diphenyl-2,9-dimethyl-1,10-phenanthroline disulphonate, which was concentrated on-line on to an ion exchanger packed in a flow-through cell, could be measured continuously with a spectrophotometer at 484 nm. The detection limit was 0.08 ng cm−3 with 8.3 cm3 of sample solution. The proposed method permitted a highly sensitive, selective determination of copper in karst groundwater samples without any preconcentration. By measuring the copper concentration response in water after a storm, the infiltration rate of rain water from the soil zone to the underground river of a karst groundwater system could be evaluated to be about 10–20 m day−1.