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| Determination of Chromium, Nickel, Copper, Arsenic, Cadmium and Lead in Rice by ICP-MS with Microwave Digestion |
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Received:November 06, 2018
Revised:February 24, 2019
Accepted:December 07, 2018
Published Online:May 27, 2019
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| DOI：doi:10.3969/j.issn.2095-1035.2019.02.002 |
| KeyWord:Inductively coupled plasma mass spectrometry; microwave digestion; rice; chromium; nickel; copper; arsenic; cadmium; lead |
| Author | Institution |
| Ou Chaojie |
Guangxi Zhuang Autonomous Region Center for Analysis and Test Research |
| Wu Qiongjing |
Guangxi Zhuang Autonomous Region Center for Analysis and Test Research |
| Wei Dong |
Guangxi Zhuang Autonomous Region Center for Analysis and Test Research |
| Wei Rufeng |
Guangxi Zhuang Autonomous Region Center for Analysis and Test Research |
| Mo Dongjiang |
Guangxi Zhuang Autonomous Region Center for Analysis and Test Research |
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| Abstract: |
| The rice sample was weighed at 0.5000g, added 5ml nitric acid and 1mL hydrogen peroxide solution, and digested by microwave digestion procedure. The digestion solution was dried at 140 ℃ for 2h and water was fixed to 25mL. The contents of chromium, nickel, copper, arsenic, cadmium and lead in the above solutions were determined by inductively coupled plasma mass spectrometry. The relative standard deviation RSD (n=6) of each element was between 0.61% and 2.2%, and the recovery was between 92.8% and 108%. Standard reference materials of GBW 10011, GBW 10022, GBW (E) 100348 and GBW (E) 100361 were analyzed by the above methods. The measured values of each element were in accordance with the standard values. |
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