摘要
本文系统的研究了溴代二甲氨基苯基萤光酮显色剂［ＢＤＭＡＦ］在微量钴测定中的应用。实验发现，在阴离子表面活性剂［ＳＤＳ］存在下，ｐＨ８．５－１０的氨性介质中，显色剂与钴（Ⅱ）形成稳定的紫色络合物。络合物最大吸收波长在５６０ｎｍ处，表观值为１．０×１０６，钴含量在０－１５ｇ／２５ｍｌ符合比耳定律，本文研究了共在离子的干扰本法具有较高的选择性和灵敏度，应用于天然水及处理废水中微量钴的测定，得到满意的结果。
BDMAF color reagent were studied. The result have shown that the reac- tion between the color reagent and Co ( Ⅱ) in condation of SDS coexist formed a parple complex in pH = 8.5 - 10 ammonia solution. The biggest absorption wave length of the complex was 560nm, apparent molur absorption cofficieut was 1 .0 ×106dm-3 mol-1, cm-1 and Linear range was 0-15g/25ml. The complex could exist 24 hour.
出处
《黑龙江大学自然科学学报》
CAS
1998年第3期98-100,共3页
Journal of Natural Science of Heilongjiang University
