連続流れ分析法による工場排水中のシアン，フッ素，フェノールの定量

概要

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Determination of cyanide, fluoride, and phenol in industrial wastewater by continuous flow analysis (CFA) after continuous flow sample distillation has been studied. This analytical method provides high linearity of the calibration curve as well as both repeatability and reproducibility. The correlation coefficients of the calibration curve were estimated to be from 0.9950 to 0.9989 for cyanide, fluoride, and phenol in the concentration range from 0.1 mg L−1 to 1.0 mg L−1. The detection limits calculated on 3 σ at 0.5 mg L−1 were 0.012 mg L−1 for cyanide, 0.014 mg L−1 for fluoride, and 0.008 mg L−1 for phenol. The determination limits calculated on 10 σ at 0.5 mg L−1 were 0.041 mg L−1 for cyanide, 0.045 mg L−1 for fluoride, and 0.028 mg L−1 for phenol. The good results were obtained in recovery tests by using industrial wastewater. This analytical method could be successfully applied to the determination of cyanide, fluoride, and phenol in industrial wastewater.