泡沫塑料吸附硫代米蚩酮比色法测定矿石中痕量金

Estimation of Trace Gold in Mineral by Means of the Foam - plastics' Absorbing and Attaching to TMK SP

试样经王水溶矿,泡沫塑料吸附震荡分离富集金,用EDTA-柠檬酸三铵联合掩蔽干扰元素,pH=3时TMK与金形成红色络合物,选择合适的体系和控制试剂用量进行水相小体积比色。灵敏度τ=1.25*105,称取10克试样,可测定0.001 g/t以上的金。

Sample is dissolved by acid. Gold can be assembled by the foam-plastics'absorption, oscillation and separation. The interference elements are covered by EDTA-(NH4)3C6H5O7.2Hs2O. If pH=3, TMK and gold become the red complex. Choose the proper system and control reagent amount and then proceed mutually small physical volume in water SP. If sensitivityr= 1.25 * 105, take and weigh 10 grams of sample, gold for 0.001 g/t above can be measured.