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2003•Journal of Guangxi Normal UniversityRequires access

STUDY ON THE COLOR REACTION OF p-CHLOROBEN-ZENEDIAZO AMINOAZOBENZENE WITH CADMIUM AND ITS APPLICATION

Zhou Neng

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Abstract

The color reaction of new reagent pchlorobenzenediazoaminoazobenzene (pCBDAA) with cadmium has been studied.The results show that in the presence of TritonX100 and pH10.0 borax buffer solution,the pCBDAA reacts with cadmium to form an orange stable complex with a molar ratio of 2∶1,which has a maximum absorption at 493nm.The molar absorptivity of the complex is 1.21×105L·mol-1·cm-1.Beer's law is obeyed in the range of 0～10mg/L Cd(Ⅱ).The method has been applied to determine cadmium trace in waste water with satisfactory results.

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What this paper is about

The color reaction of new reagent pchlorobenzenediazoaminoazobenzene (pCBDAA) with cadmium has been studied.The results show that in the presence of TritonX100 and pH10.0 borax buffer solution,the pCBDAA reacts with cadmium to form an orange stable complex with a molar ratio of 2∶1,which has a maximum absorption at 493nm.The molar absorptivity of the complex is 1.21×105L·mol-1·cm-1.Beer's law is obeyed in the range of 0～10mg/L Cd(Ⅱ).The method has been applied to determine cadmium trace in waste water with satisfactory results.

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Available abstract

The color reaction of new reagent pchlorobenzenediazoaminoazobenzene (pCBDAA) with cadmium has been studied.The results show that in the presence of TritonX100 and pH10.0 borax buffer solution,the pCBDAA reacts with cadmium to form an orange stable complex with a molar ratio of 2∶1,which has a maximum absorption at 493nm.The molar absorptivity of the complex is 1.21×105L·mol-1·cm-1.Beer's law is obeyed in the range of 0～10mg/L Cd(Ⅱ).The method has been applied to determine cadmium trace in waste water with satisfactory results.

Key concepts: Molar absorptivity, Reagent, Cadmium, Color reaction, Borax, Molar ratio, Chemistry, Nuclear chemistry

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