树脂分离富集—石墨炉原子吸收测定痕量钯

The Pd Pre-concentration Method by Alkalescence Anion Resin and Determination of Trace Pd by GFAAS

研究了Styrene -DVB -D30 1G大孔弱碱性苯乙烯系阴离子交换树脂对痕量Pd的吸附性能。在 1 %～ 1 0 %HCl介质中 ,Pd与Cl- 形成的 [PdCl6 ]2 - 络阴离子被树脂吸附。吸附物灰化 ,王水溶解 ,在 5 %HCl溶液中用石墨炉原子吸收测定。方法检出限为 0 8ng g ,测定国家一级标准样品中的Pd ,结果与标准值相符 ,1 2次测定的RSD为 6 1 %～ 7 3%。方法用于测定水系沉积物中的痕量Pd。

In present paper, the adsorption property for the ultra-trace palladium by Styrene-DVB-D301G macropore alkalescence anion resin was studied. In 1% to 10% hydrochloric acid solution, [PdCl_6] 2- formed by Pd and Cl - can be adsorbed by D301G resin. The adsorption material was ashed and then dissolved by aqua regia, and determined by GFAAS in hydrochloric acid medium. The detection limit is 0.8ng/g. The method can be used for the determination of trace palladium in geochemistry samples. The method has been used for the analysis of national standard samples with the matchable results and the RSD for 12 times analysis is 6.1 %to 7.3%.