摘要
采用分光光度计测量了游离氯溶液与氨基 N ,N 二乙基苯胺 (DPD)试剂反应后溶液在可见光范围内的吸收光谱。讨论了吸收光谱的峰值波长随时间的变化关系 ,通过对不同浓度溶液的实验 ,得出了光谱测量误差 ,此误差值小于 0 0 4 % ,并采用非线性数据拟合方法对实验数据进行了分析 。
In this paper, the absorption spectra of free chlorine in the visible region has been measured after free chlorine in the solution had reacted with N, N-diethyl-1, 4-phenylenediamine(DPD). The relation between the absorption spectra and peak wavelength has been discussed. From the experiment of liquor with different concentration, the error of spectral measurement is less than 0.04%. By nonlinear data fitting, the relation between the concentration of free chlorine and the transmittivity has been given.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第10期1235-1237,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金 (30 2 2 70 0 2 )资助项目
