【摘要】 研究了废水中聚乙烯醇浓度的分光光度分析,选择的显色体系为0.32MH₃BO₃-0.003MI₂。在浓度6×10^-6g/l-6×10^-5g/l范围内线性良好（波长为690nm）,相关系数r=0.9998,检测下可达6×10^-6g/l。表观摩尔吸光系数1.25×10⁴l/（g.cm）。更多还原

【Abstract】 The method for the determination of PVA concentration in waste water was studied by spectrophotometry. The color solution is 0. 32 mol/L H4BO3 -0. 003 mol/L I2 - In λ = 690 nm,a calibration curve with a linear relationship was obtained in the concentration range from 6 × 10-6 g/1 to 6×10-5 g/l with the correlation coefficient being 0. 9998. The determination limit for PVA is 6 × 10-6 g/l ,And us apparent molar obsorptivity is 1. 25 × 104 l/(g. cm).更多还原