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采用 8 羟基喹啉 5 磺酸 (HQS)作柱前衍生试剂 ,不含对离子试剂 ,在ODS柱上以甲醇 -水 ( 38∶62V/V ,含有 1 0mmol/LpH5 6乙酸 -乙酸钠缓冲溶液 )作为流动相 ,4 7min内高选择性测定了痕量Pd 。此方法共存离子允许量很大 ,具有很高的选择性 ,且流动相在同类试剂中最简单 ,当信噪比为 3时 ,检出限为2 1ng/mL。方法用于直接测定矿样中痕量钯 ,结果与标准参考值相符。
Using 8-hydroxyquinoline 5-sulfonic acid (HQS) as a pre-column derivatization reagent, without ion-pair reagent, the column was eluted with methanol-water (38:62 V / ) As mobile phase, the trace Pd was determined with high selectivity in 47 min. This method allows a large amount of ions to coexist, has a high selectivity, and has the simplest mobile phase among the same reagents. When the signal-to-noise ratio is 3, the detection limit is 2 1 ng / mL. The method is used for the direct determination of trace amounts of palladium in mineral samples and the results are in accordance with the standard reference values.