Department of Chemistry, Higher Institute of Agriculture, BG-4000 Plovdiv, Bulgaria.
Talanta. 1998 Aug;46(5):1073-8. doi: 10.1016/s0039-9140(97)00376-7.
The interaction of Mn(VII) and the Neotetrazolium chloride has been examined. The ion-associate formed is extracted into 1,2di-chloroethane. The optimum conditions have been established. The molar absorptivity of the complex is (9.1+/-0.08)x10(5) l mol(-1) cm(-1). The sensitivity of the method is 6.04x1010(-5) mug cm(-2). It is possible to extract and determine manganese in the presence of large number of cations and anions. The characteristic values for the extraction and the aqueous phase equilibria were determined: extraction constant K(ex)=3.21x10(9), distribution constant K(D)=33 and association constant beta=9.72x10(7). The method is applicable to analysis of soils and steels.
研究了 Mn(VII)与氯化新四唑的相互作用。形成的离子缔合物被萃取到 1,2-二氯乙烷中。确定了最佳条件。该络合物的摩尔吸光率为 (9.1+/-0.08)x10(5) l mol(-1) cm(-1)。该方法的灵敏度为 6.04x1010(-5) mug cm(-2)。在存在大量阳离子和阴离子的情况下，有可能进行锰的萃取和测定。测定了萃取和水相平衡的特征值：萃取常数 K(ex)=3.21x10(9)，分配常数 K(D)=33 和缔合常数 beta=9.72x10(7)。该方法适用于土壤和钢的分析。
