检测管法快速测定废水中氰化物含量

RAPID DETERMINATION OF CYANIDE OF THE WASTE WATER BY DETECTING TUBE

本文用微型扩散器对水样进行预处理后，在pH9．0～13．0范围内，采用简易定量检测管法，测定废水中氰化物总量。该方法有高的回收率（96％～110％）和较好的精密度（RSD在0．012～0．054之间）。与分光光度法比较，无显著性差异，该法简单、快速，可在二十分钟内完成，检测范围为每升水样中氰化物含量0．5～20mg。

A simple and rapid detecting tube method for the determination of cyanide of the waste water was established. Total cyanide could be determined by simply quantitative detecting tube in the range of pHg9 0~ 13. 0 after water samples was preconditioned by the micro-diffuser. The method has no statistical significance(P>0. 05) in comparison with the spectrophotometry by 8 water samples and it has the advantages of simple operation. high recovery and accuracity. The concentration of cyanide of water samples may be determined simply and rapidly in 20 minutes in the range of 0.5 mg/L^20mg/L.