摘要
在0.5mol/L的硫酸-0.3g/L的苯羟乙酸-3g/L的氯酸钾溶液中,钨、钼均产生单峰形极谱催化波,分别于-0.60V和-0.25V测量其峰高值,本法适用于试样中w(W)=0.5×10-6～200×10-6和w(Mo)=0.5×10-6～100×10-6的测定,标准偏差分别为0.02～0.08(W),0.02～0.04(Mo),已用于斑岩铜矿中微量钨、钼批量样品的连续测定,其结果稳定、可靠。
<Abstrcat>Mono peak polarographic catalyzing waves of tungsten and molybdenum occur in a solution of 0.5mol/L sulfuric acid-0.3g/L benzene hydroxyl acetic acid-3g/L potassium chlorate and the peak values were measured at -0.60v and-0.25v respectively. The method is fit for the measurement of the samples with w (W)=0.5×10^(-6)~200×10^(-6) and w (Mo)=0.5×10^(-6)~100×10^(-6) and the standard deviations are 0.02~0.08(W) and 0.02~0.04(Mo) respectively. The method has already been used in continuous batch determination of trace tungsten and molybdenum with stable and reliable result.
出处
《矿产与地质》
2005年第3期328-330,共3页
Mineral Resources and Geology
关键词
催化极谱分析
连续测定
实验
钨
钼
斑岩铜矿
catalytic polarography, continuous determination, experiment, tungsten, molybdenum, porphyry copper
