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| 络合掩蔽-离子色谱法测定氯亚钯酸中硝酸根 |
| Determination of nitrate content in chloropalladous acid solution by complex masking – ion chromatography |
| 投稿时间：2022-04-26 |
| DOI： |
| 中文关键词: 分析化学 离子色谱 络合掩蔽 梯度淋洗 |
| 英文关键词: analytical chemistry ion chromatography (IC) complexation masking gradient elution |
| 基金项目:国家工信部科[2018]31号2018-0536T-YS |
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| 摘要点击次数: 527 |
| 全文下载次数: 236 |
| 中文摘要: |
| 建立了络合掩蔽-离子色谱法，测定氯亚钯酸(H2PdCl4)溶液中的硝酸根含量。用乙二胺(en)将阴离子[PdCl4]2-转化为[Pd(en)2]2+阳离子，用银柱除氯，避免大量氯离子拖尾影响阴离子的测定。采用高容量阴离子色谱柱，以5-15-35-5 mmol/L KOH在线梯度淋洗，抑制电导检测氯亚钯酸中的硝酸根含量。结果表明，常见阴离子对测定结果无干扰，方法在0.05~4.0 μg/mL浓度范围内有良好的线性关系，相对标准偏差为0.8%~3.4%，加标回收率为93%~110%，满足产品质量检测要求。 |
| 英文摘要: |
| A method for the detection of nitrate in H2PdCl4 by complex masking-ion chromatography was established. The anionic PdCl42- was first converted to Pd(en)22+ cations with ethylenediamine (en). A silver column were used to eliminate chlorine, so as to avoid the trailing effect caused by a large amount of chloride ion. A high capacity anion chromatographic column was selected for the determination of nitrate in chloropalladium acid with 5-15-35-5 mmol/L KOH as on-line gradient elution. The results showed that the common anions did not interfere with the determination results, and the method had a good linear relationship in the concentration range of 0.05~4.0 μg/mL. The relative standard deviation was 0.8%~3.4% while the spiked recovery ranged from 93% to 110%. The established method can meet the requirements of the quality testing for H2PdCl4. |
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