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铅、镉、锌在10%的氯化钙底液中,用盐酸羟胺还原高价铁和除氧、不用加任何消峰剂均有良好波形.其波高与浓度呈良好线性关系.铅、镉、锌的半波电位(对饱和甘汞电极)分别为-0.45V,约-0.65V,和-1.04V.在此底液中测定铅已被广泛采用、这里不做赘述.在此底液中同时进行镉、锌的测定作了一些实验,经过一段的生产实践,效果良好.
Lead, cadmium, zinc In the 10% calcium chloride bottom solution, hydroxylamine hydrochloride is used to reduce high-valent iron and deoxygen without any anti-peaking agent. The wave height shows a good linear relationship with the concentration. The half-wave potential of zinc (for saturated calomel electrodes) is -0.45 V, about -0.65 V, and -1.04 V. Determination of lead in this base solution has been widely adopted and will not be described in detail here. At the same time cadmium, zinc determination made some experiments, after a period of production practice, the effect is good.