钴与铬天青S、溴化羟十二烷基三甲铵在吡啶的水溶液中可发生灵敏的显色反应,但吡啶作用的机理未论及,且吡啶气味恶臭,不便于应用.为了探讨吡啶在钴多元络合物形成中的增稳作用以及寻找其它含氮中性配位体代替吡啶,对Co(Ⅱ)与CAS,吡啶(Py)及其衍生物(α-氨基吡啶α-AP、5-氯-α-氨基吡啶5-Cl-α-AP),阳离子表面活性剂(CSF)体系进行了系统的研究. Cobalt and chrome azure S, hydroxy dodecyltrimethylammonium bromide in pyridine aqueous solution can occur sensitive color reaction, but the pyridine mechanism of action is not addressed, and the smell of pyridine stench, inconvenient to use.In order to explore the pyridine (Ⅱ) with CAS, pyridine (Py) and its derivatives (α-aminopyridine α-AP, α-aminopyridine and α-aminopyridine) in the formation of cobalt complex complexes and the search for other nitrogen- 5-chloro-α-aminopyridine 5-Cl-α-AP), cationic surfactant (CSF) system was studied systematically.