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| Determination of 8 heavy metals in rice by ICP-MS with micro-open graphite digestion |
| Received:July 26, 2022 Revised:August 10, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：doi:10.3969/j.issn.2095-1035.2023.05.001 |
| KeyWord:heavy metals、rice、mlutielement analysis、micro-open、ICP-MS |
| Author | Institution |
| JIANG Qi |
广东省农业科学院农业质量标准与监测技术研究所 |
| PENG Jinfen |
广东省农业科学院农业质量标准与监测技术研究所 |
| CHEN Chuguo |
广东省农业科学院农业质量标准与监测技术研究所 |
| Li Lei |
广东农科监测科技有限公司 |
| DENG Tenghaobo |
广东省农业科学院农业质量标准与监测技术研究所 |
| CHEN Yongjian |
广东农科监测科技有限公司 |
| ZHAO Peihua |
广东省农业科学院农业质量标准与监测技术研究所 |
| WEN Dian |
广东省农业科学院农业质量标准与监测技术研究所 |
| DU Ruiying |
广东省农业科学院农业质量标准与监测技术研究所 |
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| Abstract: |
| A micro-open graphite digestion coupled with ICP-MS for simultaneous determination of Cr、Ni、Cu、Zn、As、Cd、Hg、Pb in rice was established. The factors affecting the accuracy of Hg determination in rice were studied,and the weight of rice and acid volume system were optimized. The results showed that protein in rice was an important factor affecting the accuracy of Hg determination, and weighing quantity of 0.4 g can reduce the effect of protein in rice on Hg determination, and the 1%HNO3 + 1%HCl mixed solution can effectively improve the recovery rate of Hg. According to the rice reference materials and actual sample digestion, the method could accurately determine Cr、Ni、Cu、Zn、As、Cd、Hg、Pb at the same time.The detection limit,accuracy,precision,and efficiency can meet the monitoring needs of 8 heavy metals in large quantities of rice. |
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