论文部分内容阅读
金在地壳中的平均含量为5×10~(-7)％,即0.005g/t。在各类岩石中,金的含量变化幅度极大,在实际工作中,人们常选用灵敏度较高的方法以满足测定下限,当发现含量较高的样品时,再重新溶样制备试液,改用另一方法以满足测定上限、以致造成不少重复劳动。 本文提出,首先在2M氢氧化钾底液中用示波极谱法测定,并选出金含量高于0.1g/t的样品,然后将剩下的含量低于0.1g/t的试液,
The average gold content in the crust is 5 × 10 -7%, ie 0.005 g / t. In all kinds of rock, the content of gold varies greatly, in practice, people often choose higher sensitivity method to meet the lower limit of determination, when a higher content of the sample is found, and then re-sample preparation of test solution, change In another way to meet the upper limit of determination, resulting in a lot of duplication of effort. This paper proposes first oscillopolarographic determination of 2M potassium hydroxide in the bottom solution, and select the gold content of more than 0.1g / t samples, and then the remaining content of less than 0.1g / t of the test solution,