论文部分内容阅读
近年来金的测定方法进展迅速,除传统的重量法、容量法、分光光度法外,仪器分析方法应用广泛,尤其是化学光谱法、原子吸收法、极谱法、离子选择电极法及中子活化法也引人注目。现将1980—1987年金的测定方法进行综述。 一、重量法 经典的火试金重量法仍是测定金的主要方法。薛世纯等采用直接火试金法测定了粗铜中的金、银,在低硅酸度下,加入过量氧化锰,使大量铜造渣,残留在铅板中的少量铜对灰吹无影响。文献采用面粉法,烧灼面粉法和铁钉法测定了金精矿中的金、银。张肇宏指出金在铅试金和灰吹过程中有损失,提出了金量在3.6—16.4ppm范围内的校正值,溶渣0.23%灰皿0.98%。
In recent years, rapid determination of gold methods, in addition to the traditional gravimetric method, volumetric method, spectrophotometry, instrumental analysis methods are widely used, especially chemical spectroscopy, atomic absorption spectrometry, polarography, ion-selective electrode method and neutron Activation method is also attractive. The method of determination of gold from 1980 to 1987 is reviewed. First, the gravimetric method of the classic fire test Gravimetric method is still the main method of determining gold. Xue Shichun and other direct fire assay gold determination of blister copper, silver, low silicate, adding excessive manganese oxide, so a lot of copper slag, a small amount of copper remaining in the lead board had no effect on gray blowing. The literature uses flour method, burning flour method and nails method for the determination of the gold concentrate, silver. Zhang Zhaohong pointed out that gold in the lead test gold and gray blowing loss, proposed a correction value of gold in the range of 3.6-16.4ppm, dissolved 0.23% ash 0.98%.