【摘要】 对Ｐｂ(２＋)在增甘膦－氯化钾－铜铁试剂体系中的极谱波性质进行了研究，提出了用示波极谱法测定铅含量的一种新方法．在上述底液中，Ｐｂ(２＋)与试剂作用，生成的三元络合物在极谱仪上产生一灵敏的吸附波，峰电位为－０．６５Ｖ（Ｖ，ＳＣＥ）．在ω(Pb(2+))＝０．０２×１０(－６)～０．４０×１０(－６)范围内，峰电流与铅离子浓度呈线性关系，检测下限为ω（Ｐｂ(２＋)）＝０．０１９×１０(－６)．更多还原

【Abstract】 The properties of Pb²⁺ polarographic wave was studied in the Nbpc- KCl-Hcup system and a new method of measuring lead contant was put forward in this paper. In the primay solution above,Pb2+ reacts with the reagent and generates a ternary coordination Compound which generates a sensitive absorptive wave on the polarograph with the peak potential being-0. 65V （vs,SCE）. In the Concentration range of co(Pb²⁺ ) = 0. 02 ×10-6 0. 4 × 10-6 ,the peak current value has line relationship with the Pb2+ concentration with the least detectable value being ω (Pb²⁺ ) = 0. 019× 10-6.更多还原