硫酸铜水溶液全浓度范围分光吸收特性

摘要

采用721分光光度计对直至饱和的全浓度范围的硫酸铜水溶液进行透射光度分析.结果表明,硫酸铜水溶液在照射光波长800 nm左右存在最大吸光度,在浓度不高于0.16 mol/L时,吸光度与浓度之间呈线性关系;照射光波长600 nm时,在直至饱和的全浓度范围内,吸光度随硫酸铜浓度呈现规律性变化,浓度低于0.50 mol/L时近似于直线关系;350～1020 nm全波长扫描的吸光度最大值与硫酸铜浓度之间本质上是曲线关系,但在0.020 ～0.160 mol/L浓度范围内,可以近似为直线关系.透光率对波长微分的最小值与硫酸铜浓度之间具有光滑的单调曲线关系.%Transmission photometric analysis was carried out on cupric sulfate aqueous solution in whole concentration range up to saturation by 721 spectrophotometer.Results showed that maximum absorbance of cupric sulfate aqueous solution appeared at the wavelength of around 800 nm.When the cupric sulfate concentration was no more than 0.16 mol/L,there was a linear relationship between absorbance and concentration;when irradiation wavelength was 600 nm,the absorbance varied regularly with the cupric sulfate concentration in whole concentration range up to saturation,but when the cupric sulfate concentration was lower than 0.50 mol/L,it approximated to a linear relationship;in the wavelength range of 350 ～ 1020 nm,maximum absorbance and cupric sulfate concentration was a essentially curvelinear relationship.But in the concentration range of 0.020 ～ 0.160 mol/L it approximated to a linear relationship.The minimum differential value of transmittance to wavelength had a smooth monotone curve relationship with the cupric sulfate concentration.