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本文系用1-苯基-3-甲基-4-苯甲醯基吡唑啉酮-5(PMBP)/甲基异丁基甲酮(MIBK)在六次甲基四胺存在下(pH=8.9)萃取预浓缩以后,用1.5mol/LHCl-2mgLa~(3+)/ml-0.5mgNa~+/ml 进行反萃取,继用原子吸收法在 Li_2CO_3、LiBr、RbCl、Cs_2SO_4、KOH、H_3BO_3、K_2SO_4、NaNO_3、NH_4Cl、NaCl、KH_2PO_4等盐类中测定有机相中的铁,反萃液测定其它9个离子。大量的 Cl~-、NO~-_3、SO~(2-)_4、Li、Rb、Cs、B、PO~(3-)_4等没有干扰。
In this paper, the use of PMBP / MIBK in the presence of hexamethylenetetramine (pH = 8.9 After extraction and preconcentration, the samples were stripped with 1.5mol / LHCl-2mgLa ~ (3 +) / ml-0.5mgNa ~ + / ml and followed by atomic absorption spectrometry in the presence of Li_2CO_3, LiBr, RbCl, Cs_2SO_4, KOH, H_3BO_3, K_2SO_4 , NaNO_3, NH_4Cl, NaCl, KH_2PO_4 and other salts were measured in the organic phase of iron, stripping solution determination of the other nine ions. A lot of Cl ~ -, NO ~ - 3, SO ~ (2 -) _4, Li, Rb, Cs, B, PO ~ (3 -) _4 and so on did not interfere.