β-环糊精和阿拉伯胶存在下离子缔合物体系分光光度法测定微量钼  

Spectrophotometric determination of micro molybdenum in the presence of β-cyclodextrin and arabic gum with an ionic association system

作　　者：罗川南[1] 王忠祥[2] 周长利[3] 李慧芝[3] 

机构地区：[1]中科院兰州化学物理研究所,甘肃兰州730000 [2]绵阳职业技术学院,四川绵阳621000 [3]济南大学化学院,山东济南250022

出　　处：《冶金分析》2003年第1期27-29,共3页Metallurgical Analysis

摘　　要：研究了在阿拉伯树胶、β CD存在下 ,钼 -硫氰酸盐 -结晶紫显色体系及钼的分光光度法的测定条件。在稀硫酸介质中 ,缔合物的最大吸收波长λmax=63 0nm ,表观摩尔吸光系数ε6 30 =7 91× 10 5,线性范围 0～ 5 μg/2 5mL。该方法用于钢铁中微量钼的测定 ,结果满意。A new sensitive ionic association system of Mo-SCN-crystal violet for the determination of molybdenum in the presence of β-cyclodextrin and arabic gum by spectrophotometry was studied and established.The λ max of the complex is 630nm.Its apparent molar absorptivity is 7.91×10 5 L·cm -1 ·mol -1 .Beer’s law is obeyed in the range of 0-5μg/25mL.Satisfactory results were obtained for the determination of micro molybdenum in steel.

关 键 词：Β-环糊精 阿拉伯胶 钼 结晶紫 氢氰酸盐 分光光度法 

分 类 号：TG115.3[金属学及工艺—物理冶金]