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| Determination and Quality Control of Chromium, Nickel, Copper, Arsenic, Cadmium, Lead and Zinc in Wheat in Shandong Province by ICP-MS with Microwave Digestion |
| Received:November 01, 2019 Revised:November 12, 2019 |
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| DOI：doi:10.3969/j.issn.2095-1035.2020.03.013 |
| KeyWord:microwave digestion; inductively coupled plasma mass spectrometry; wheat; heavy metal |
| Author | Institution |
| CHENLU |
山东省农业科学院农业质量标准与检测技术研究所 |
| LIXia |
山东省农业科学院农业质量标准与检测技术研究所 |
| LI Zengmei |
山东省农业科学院农业质量标准与检测技术研究所 |
| DING Min |
山东省农业科学院农业质量标准与检测技术研究所 |
| GUO Dongliang |
山东省农业科学院农业质量标准与检测技术研究所 |
| TENG Jing |
山东省农业科学院农业质量标准与检测技术研究所 |
| Deng Ligang |
山东省农业科学院农业质量标准与检测技术研究所 |
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| Abstract: |
| A method for the determination of seven heavy metal elements (Cr, Ni, Cu, As, Cd, Pb, Zn) in Shandong wheat by microwave digestion-inductively coupled plasma mass spectrometry was established. More than 1000 wheats in Shandong province ware analyzed. The results showed that the detection limit is 0.0007-0.09mg/kg by using the appropriate internal standard and He collision mode. The relative standard deviation (RSD, n=6) is within 10%. The linear curve of the standard curve is good. The correlation coefficient is greater than 0.999. The method was applied to the determination of national reference samples (GSB-3, GSB-4, GSB24), and the results were consistent with the standard values. The method has high sensitivity, good reproducibility and accurate quantification. It can be used for the determination of large quantities of wheat samples. |
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