磷钒钼蓝-孔雀绿缔合显色反应的研究及应用  

Study on the Colour Reaction of Ion Associated Complex of Phosphovanadomolybdate Blue-Malachite Green System and Its Application

作　　者：刘新玲 周原 李存生 

机构地区：[1]湘潭机电高等专科学校应用化学系,湘潭411101

出　　处：《冶金分析》1997年第6期15-17,共3页Metallurgical Analysis

摘　　要：在聚乙烯醇(PVA)和乳化剂 OP 存在下,磷钒钼蓝与孔雀绿(MG)形成离子缔合物,其最大吸收在在620nm 波长处,表观摩尔吸光系数ε=2.1×10~5,磷量在0～2.5μg/25ml 范围内符合比尔定律,方法具有实验条件宽容、有色缔合物稳定、灵敏度高、选择性好,应用于钢铁样品中磷的测定,结果满意。Phosphovanadomolybdate blue with malachite green forms a stable ion associated complex in the presence of polyvinyl alcohol(PVA)and OP.Its apparent molar absorptivity is 2.1×10~5 L·mol^(-1)·cm^(-1)at 620nm.Beer's law is obeyecl in the range of 0 to 2.5μg of P in 25ml solution.The method has been used to determine trace phosphorus in steel with satisfactory results.

关 键 词：磷 磷钒钼蓝 孔雀绿 分光光度法 显色反应 钢铁 

分 类 号：O613.62[理学—无机化学] TG115.31[理学—化学]