注射器除杂-饱和TMK比色法快速测金方法

Rapid Determination of Gold by Syringe Impurity Removal Saturated TMK Colorimetry

提出了用注射器除杂,饱和TMK比色的野外测金方法。选择氯酸钾为氧化剂,在前处理阶段将对测定影响最大的硫和炭除掉,克服需要马弗炉的条件。同时在前处理中用注射器除杂,避免取分液时带来的误差。用异戊醇萃取富集,饱和TMK在有机相显色。该方法检出限可达0.1g/t。对于高含量的金,取分液测定,也能达到好的效果。本法用于野外找矿的靶区选择,简单快速,经实际样品验证,结果满意。

This work reported a simple colorimetric method for gold field detection.This method can avoid the error when runs liquid by using syringe to removal the impurity.The saturated TMK solution used as chromogenic reagent so the organic phase color can be easy to observe.We use the potassium chlorate as oxidizing agent to remove the sulfur and carbon,which will significant impact on the test results,so that the muffle is needless during gold field detection.The experiment data involved that the detection limit of this method is 0.1g/T.This method can also used to detective high levels of gold.It has been verified by actual samples that this simple and fast method can be used to choice the target areas of field prospecting.