离子色谱法同时测定硫酸钯溶液中的氯离子和硝酸根

Linlin SU,Chuan ZUO,Wenming HOU,Mingkun YU,Yuan HAN,Lu FENG,Jianwei WEI, Mingming XU

Precious Metals（2017）

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Abstract

建立了离子色谱法同时测定贵金属化合物硫酸钯溶液中的氯离子和硝酸根离子含量的方法.使用IC-H型阳离子交换前处理柱除去样品中的钯(II)阳离子;采用梯度淋洗程恅,以KOH溶液(1.0 mL/min)淋洗液,用抑制性电导检测,外标法定量测定氯离子和硝酸根离子.测定线性范围为0.04~1.2μg/mL,检出限为0.006~0.015μg/mL,相对标准偏差(RSD)为2.5%~4.9%,样品加标回收率94.2%~112.9%,可满足硫酸钯溶液产品中氯离子和硝酸根离子杂质测定要求.

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Key words

analytical chemistry,ion chromatography (IC),palladium(II) sulfate solution,chloride ion,nitrate ion

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