摘要
利用铁(Ⅲ)-邻菲啰啉混合液为显色剂间接光度法测定废水中二苯胺。对该法的测定条件、回收率进行了研究,结果表明,二苯胺在1～10mg·L-1范围内,线性关系良好,回收率为92.2％～98.6%,精密度较好。
Based on the reduction of Fe(Ⅲ) in the complex Fe(Ⅲ)-o-phenanthroline to Fe(Ⅱ) by diphenyl-amine, an indirect method of determination of diphenylamine by photometric measurement of the absorbance of Fe (Ⅱ)-o-phenanthroline complex at 510nm was described. The optimum acidity for the reduction reaction was found to be pH 4. 0. Beer's law was held in the range of 1-10mg of diphenylamine per liter of solution. RSD's (n=5) obtained at concentration levels of 1. 7mg · L-1 and 0. 3mg · L-1 of diphenylamine were 1. 92% and 10. 94% respectively. Recovery test was made by standard addition method in the analysis of five samples of waste water and results obtained were in the range 97. 2%~98. 6%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2003年第8期478-479,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
