抗坏血酸还原—石墨炉原子吸收法测定环境样品中痕量金

Determination of Trace Au in Environmental Samples by Graphite Furnace AAS With Vc Reduction

复杂的工业固体废渣,采用王水溶解,泡沫塑料吸附富集分离干扰元素,硫脲解脱,由于应用抗坏血酸还原,使石墨炉原子吸收法测定环境样品中的痕量金的方法,灵敏度更大提高,检出限可达到0.3 ng/g,准确度、精密度均能满足规范要求。而且方法简便快捷。

Determination of trace Au in environmental samples by graphite furnace AAS was discussed. The agua regia was used to dissolve industrial solid waste, foam plastics was used to remove interference element, thiourea was used as release agent, then Vc reduction was carried out, at last graphite furnace AAS was used to determine trace Au. This method is simple, rapid, and has high sensibility, the detection limit can achieve 0.3 ng/g, so its precision and accuracy can meet national standard.