Development of an reliable analytical method for synergistic extractive spectrophotometric determination of cobalt(II) from alloys and nano composite samples by using chromogenic chelating ligand
作者:Ganesh S. Kamble、Anita A. Ghare、Sanjay S. Kolekar、Sung H. Han、Mansing A. Anuse
DOI:10.1016/j.saa.2011.09.015
日期:2011.12
sensitivity of cobalt(II)-2',4'-dinitro APTPT-pyridine complex in chloroform are 1.109×10(3) L mol(-1) cm(-1) and 0.053 μg cm(-2), respectively while molar absorptivity and Sandell's sensitivity of cobalt(II)-2',4'-dinitro APTPT complex in chloroform are 6.22×10(2) L mol(-1) cm(-1) and 0.096 μg cm(-2), respectively. The composition of cobalt(II)-2',4'-dinitro APTPT-pyridine complex (1:2:2) was established
建立了一种协同简单,选择性分光光度法测定1-(2',4'-二硝基氨基苯基)-4,4,6-三甲基-1,4-二氢嘧啶-2-硫醇[2]中钴(II) ',4'-二硝基APTPT]作为生色试剂。在吡啶存在下于pH值为9.5-10.2的条件下协同有效萃取钴(II)的方法已被描述,表明橙红色三元配合物的摩尔比为1:2:2(M:L:Py )。从有机相中萃取钴(III)的平衡时间为10分钟。相对于试剂空白,在490 nm处用分光光度法测量了有色有机层在氯仿中的吸光度。钴(II)的浓度范围为2.5-15μgmL(-1),遵循比尔定律,最佳浓度范围为5-12。5μgmL(-1)的钴(II),并根据林邦的图进行了评估。钴(II)-2',4'-二硝基APTPT-吡啶配合物在氯仿中的摩尔吸光度和Sandell敏感性为1.109×10(3)L mol(-1)cm(-1)和0.053μgcm(-2) ),而钴(II)-2