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Study of determination of cyanide in water and wastewater by flow injection spectrophotometry

Huo Zongquan

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Abstract

A simple and rapid method of determination the concentration of cyanide in water and wastewater was studied by flow injection spectrophotometric method (GB/T8538-2008). The results show that the method had a good correlation coefficient (0.999 9),the method detection limit was 0.000 28 mg/L(CN - ),the RSD was 3.2 %(0.01mg/L)and 1.3 %(0.09mg/L), the average recovery rate of low concentration(0.01 mg/L)and high concentration(0.09 mg/L) which included groundwater, surface water and wastewater were 97.0 %,95.9 %,84.4 % and 103.9 %,102.1 %,96.2 %,respectively.

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What this paper is about

A simple and rapid method of determination the concentration of cyanide in water and wastewater was studied by flow injection spectrophotometric method (GB/T8538-2008). The results show that the method had a good correlation coefficient (0.999 9),the method detection limit was 0.000 28 mg/L(CN - ),the RSD was 3.2 %(0.01mg/L)and 1.3 %(0.09mg/L), the average recovery rate of low concentration(0.01 mg/L)and high concentration(0.09 mg/L) which included groundwater, surface water and wastewater were 97.0 %,95.9 %,84.4 % and 103.9 %,102.1 %,96.2 %,respectively.

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Available abstract

A simple and rapid method of determination the concentration of cyanide in water and wastewater was studied by flow injection spectrophotometric method (GB/T8538-2008). The results show that the method had a good correlation coefficient (0.999 9),the method detection limit was 0.000 28 mg/L(CN - ),the RSD was 3.2 %(0.01mg/L)and 1.3 %(0.09mg/L), the average recovery rate of low concentration(0.01 mg/L)and high concentration(0.09 mg/L) which included groundwater, surface water and wastewater were 97.0 %,95.9 %,84.4 % and 103.9 %,102.1 %,96.2 %,respectively.

Key concepts: Wastewater, Chemistry, Cyanide, Correlation coefficient, Spectrophotometry, Detection limit, Chromatography, Groundwater

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