Phule Sachin R, Aher Haribhau R, Kuchekar Shashikant R, Han Sung-H
P. G. Departmrent of Analytical Chemistry, P. V. P. College, Pravaranagar, Tal Rahata, Dist Ahmednagar 413713, MS, India.
Se Pu. 2012 Sep;30(9):931-7. doi: 10.3724/sp.j.1123.2012.03052.
A selective method has been developed for the extraction chromatography of aluminium (III) and its separation from several metal ions with a chromatographic column containing N-n-octylaniline (a liquid anion exchanger) coated on silanized silica gel as a stationary phase. The aluminium (III) was quantitatively extracted with the 0.065 mol/L N-n-octylaniline in 0.013 to 0.05 mol/L sodium succinate at a flow rate of 1.0 mL/min. The extracted metal ion has been recovered by eluting with 25.0 mL of 0.05 mol/L hydrochloric acid and estimated spectrophotometrically with aurintricarboxylic acid. The effects of the acid concentration, the reagent concentration, the flow rate and the eluting agents have been investigated. The log-log plots of distribution coefficient (Kd (Al (III))) versus N-n-octylaniline concentration in 0. 005 and 0. 007 mol/L sodium succinate gave the slopes of 0.5 and 0.7 respectively and showed the probable composition of the extracted species was 1:1 (metal to amine ratio) and the nature of extracted species was [RR'NH2(+), Al succinate2(-)]org. The extraction of aluminium(III) was carried out in the presence of various ions to ascertain the tolerance limit of individual ions. Aluminium(III) has been separated from multicomponent mixtures, pharmaceutical samples and synthetic mixtures corresponding to alloys. A scheme for mutual separation of aluminium (III), indium (III), gallium (III) and thallium (III) has been developed by using suitable masking agents. The method is fast, accurate and precise.
已开发出一种选择性方法，用于铝（III）的萃取色谱分析及其与几种金属离子的分离，该方法使用涂覆在硅烷化硅胶上的N-正辛基苯胺（一种液体阴离子交换剂）作为固定相的色谱柱。在0.013至0.05 mol/L琥珀酸钠中，以0.065 mol/L的N-正辛基苯胺，流速为1.0 mL/min，对铝（III）进行定量萃取。通过用25.0 mL 0.05 mol/L盐酸洗脱回收萃取的金属离子，并用金精三羧酸进行分光光度法测定。研究了酸浓度、试剂浓度、流速和洗脱剂的影响。在0.005和0.007 mol/L琥珀酸钠中，分配系数（Kd（Al（III）））对N-正辛基苯胺浓度的对数-对数图的斜率分别为0.5和0.7，表明萃取物种的可能组成为1:1（金属与胺的比例），萃取物种的性质为[RR'NH2(+)，Al琥珀酸2(-)]org。在各种离子存在下进行铝（III）的萃取，以确定各离子的耐受极限。铝（III）已从多组分混合物、药物样品和对应于合金的合成混合物中分离出来。通过使用合适的掩蔽剂，制定了铝（III）、铟（III）、镓（III）和铊（III）相互分离的方案。该方法快速、准确且精密。
