College of Chemistry and Chemical Engineering;
Central South University;
Changsha 410083;
China;
Quality Inspection Center of Hexanelactam Plant;
Baling Petrochemical Limited Company;
Yueyang 414003;
China;
沉淀剂; 亚硝基萘酚; 基质分离; ICP-AES; 氧化钴; 测定;