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| THE KED model of ICP-MS was used to determine 20 metal elements in the soil sample repeatedly dissolved by phosphoric acid and aqua regia |
| Received:February 08, 2021 Revised:February 23, 2021 |
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| DOI：10.3969/j.issn.2095-1035.2021.05.014 |
| KeyWord:ICP-MS; KED; Li,Be,Sc,V,Cr,Co,Ni,Cu,Zn,Ge,Mo,Cd,Ba,La,Ce,W,Tl,Pb,Th,U; Phosphoric acid; Aqua regia; Repeated dissolution |
| Author | Institution |
| Yang weiwei |
江西省地质调查研究院 |
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| Abstract: |
| The determination of Li,Be,Sc,V,Cr,Co,Ni,Cu,Zn,Ge,Mo,Cd,Ba,La,Ce,W,Tl,Pb,Th,U in samples dissolved with phosphoric acid and dissolved in aqua regia was studied. The acid system, the mode of ICP-MS and the best working condition of the instrument was determined. Rh was used as internal standard to correct the drift of the instrument. By selecting several stream sediments, the standard curve was made by dissolving the national first-class reference material with the sample, remove the uncertainty error. Eight kinds of soil reference materials were selected as experimental samples, the results showed that the accuracy of the method (ΔlgC) was less than 0.1, the precision (RSD) was less than 8%, the method is feasible. |
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