| 离子对色谱测定碱性样品溶液中铬的方法研究 |
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| 引用本文： | 田松柏.离子对色谱测定碱性样品溶液中铬的方法研究[J].岩矿测试,1999,18(3):193-197. |
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| 作者姓名： | 田松柏 |
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| 作者单位： | 中国石油化工集团公司石油化工科学研究院,北京,100083 |
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| 基金项目： | 国家教委“留学回国人员科研启动基金”资助 |
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| 摘 要： | 提出了两种测定碱性样品溶液中铬的离子对色谱方法，第一方法将碱性溶液用Ｈ３ＰＯ４中和，流动相采用含有１５ｍｍｏｌ／ＬＮａ２ＳＯ４的１ｍｍｏｌ／Ｌ四丁基氢氧化铵溶液；第二种方法将碱性溶液用ＨＣｌ中和，流动相采用含有２．５ｍｍｏｌ／Ｌ辛胺和１０ｍｍｏｌ／ＬＮａＳＯ４的ψ＝６％的乙腈溶液。
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| 关 键 词： | 离子对色谱 碱性样品 样品预处理 铬 地质样品 |
| 修稿时间： | 1998-11-23 |
Determination of Chromium in Basic Sample Solutions by Ion-Pair Chromatography |
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| TIAN Song-bai.Determination of Chromium in Basic Sample Solutions by Ion-Pair Chromatography[J].Rock and Mineral Analysis,1999,18(3):193-197. |
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| Authors: | TIAN Song-bai |
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| Abstract: | Two ionpair chromatographic methods for the determination of chromium in basic sample solutions are described in this paper. In the first method the basic sample solution is neutralized by phosphoric acid and analyzed by using 1 mmol/L tetrabutyl ammonium hydroxide (TBAH) solution containing 15 mmol/L sodium sulfate (pH 7) as mobile phase. In the second method the basic sample solution is neutralized by hydrochloride acid and mobile phase is 6% acetonitrile solution containing 2.5 mmol/L octyl amine and 10 mmol/L sodium sulfate (pH 7). The detection limits of these two methods are 0.01 mg/L Cr and the linear range is 00.5 mg/L Cr. The methods have been applied to the determination of Cr in rocks, sediments and soils. The results are in agreement with those provided by photometric method with precision of 1.2% RSD(n=5). \=\= |
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| Keywords: | ionpair chromatography basic sample solution pretreatment of sample chromium geological sample |
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