摘要
建立了一种联合测定硼酰化钴中钴含量和硼含量的分析方法。采用二甲酚橙为指示剂 ,EDTA为滴定剂测钴时 ,加入孔雀绿作衬托剂 ,可明显改善滴定终点。采用甘露醇强化硼酸滴定硼时 ,以 EDTA为掩蔽剂 ,可消除二价钴对硼分析的干扰 ;改用溴甲酚绿 -甲基红 -酚酞三元混合指示剂作为测定硼的指示剂 ,使滴定终点灵敏 。
A method of determination cobalt and boron in boron containing fine organic chemicals was described. Cobalt was titrated at pH 5～6 in hexamethylenetramine medium using xylenol orange and malachite green as indicator.A mixed indicator composed of bromocresol green, methyl red and phenalphthalein was used as indicator in titration of boron after the inteterience of cobalt was masked by EDTA.It is simple and fast and has been satisfactorily used for the determination of cobalt and boron in the rubber adhesion promoter, such as cobalt boron complex.
出处
《分析试验室》
CAS
CSCD
北大核心
2001年第3期76-78,共3页
Chinese Journal of Analysis Laboratory
基金
浙江省分析测试基金资助项目! (0 0 1 73 )
