【摘要】 在盐酸、磷酸、酒石酸、碘化钾,四乙基碘化铵体系中,铅和镉产生一个灵敏的波,铅峰电位是—0.56V,镉峰电位是—0.71V(对饱和甘汞电极),能同时测量铅和镉的浓度。检测下限铅是5ppb,镉是2.5ppb。这个方法适用于大气飘尘中微量铅和镉的测定。更多还原

【Abstract】 In the solution of hydrochloric acid,phosphoric acid,tartaric acid,potassium iodide,and tetrarthyl-ammonium iodide,the lead and cadmium both producea sensitive wave,the lead speak potential is -056V (VS SCE) and the cadmium’speak potential is -0.7V.Simultaneous measuring the concentrations of lead andcadmium,the detection limit of lead is 5ppb,and the lzmit of—cadmium is 2.5ppb.Thismethod is applicable to determinate trace amounts of lead and cadmium in the air dust.更多还原