摘要：
钛盐光度法测定酸性染料体系中的过氧化氢,是基于在醋酸-醋酸钠缓冲溶液(pH=4.37)中过氧化氢与钛离子生成稳定的橙色络合物的原理,通过分光光度法测定过氧化氢的含量。结果表明,在过氧化氢含量为0～45mg/L时与吸光度呈线性关系,摩尔吸光系数为1 017 L/(mol.cm),最低检测限DL=0.12 mg/L,测定系列过氧化氢浓度的相对偏差(RSD)均小于5%,样品加标平均回收率为99.1%～103.0%。
关键词:
H2O2,
草酸钛钾,
酸性染料,
Fenton体系
Abstract:
Spectrophotometry has been used for the determination of hydrogen peroxide concentration in acidic dyes with titanium oxalate. In this method, hydrogen peroxide is reacted with titanium ions in acetate-sodium acetate buffered solution（pH=4.37） to form a steady orange complex. The hydrogen content can be determined by spectrophotometry. The results show that the hydrogen peroxide whose content is within 0 to 45 mg/L has linear relationship with absorbance A. The moore absorbance coefficient is 1 017 L/（mol·cm），the DL is 0.12 mg/L， RSD is below 5%, and the average indexed recovery rate of the sample is 99.1%-103.0%.
Key words:
hydrogen peroxide,
titanium potassium oxalate,
acidic dye,
Fenton system
中图分类号:
张瑛洁, 马军, 张亮, 姚军, 陈雷, 柳旭升, 赵吉, 宋磊. 钛盐分光光度法测定酸性染料体系中的过氧化氢[J]. 工业水处理, 2008, 28(11): 72-74.
Zhang Yingjie, Ma Jun, Zhang Liang, Yao Jun, Chen Lei, Liu Xusheng, Zhao Ji, Song Lei. Spectrophotometric determination of hydrogen peroxide in acidic dye system with titanium oxalate[J]. INDUSTRIAL WATER TREATMENT, 2008, 28(11): 72-74.