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| Determination of total arsenic in the base shrimps by wet digestion/dry ash - hydrogenation - atomic fluorescence spectrometry |
| Received:April 08, 2019 Revised:April 15, 2019 |
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| DOI：doi:10.3969/j.issn.2095-1035.2019.06.006 |
| KeyWord:Wet digestion; Dry ashing; Hydrogenation - atomic fluorescence spectrometry; Arsenic; Shrimps; |
| Author | Institution |
| Lin Jianqi |
北京海光仪器有限公司 |
| Liu Haitao |
北京海光仪器有限公司 |
| Zhen Changwei |
北京海光仪器有限公司 |
| Wang Wei |
北京海光仪器有限公司 |
| Lan Tu |
中国地质装备集团有限公司 |
| Yao Mengnan |
北京海光仪器有限公司 |
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| Abstract: |
| A method for the determination of total arsenic in the shrimps was established by using the method of wet digestion/dry ash - hydride - atomic fluorescence spectrometry. Samples with 6 ml of nitric acid, cold dispelling 120 min, electric heating plate 160 ℃ to clarify, catch acid to about 1mL lastly. Then adding ashing auxiliary agent magnesium nitrate, 650 ℃5 min in muffle furnace. The hydrochloric acid dissolved ash, and testing by Atomic Fluorescence Spectrometric. Optimizing instrument conditions, the standard curve is related to linear better than 0.999 between 0.0-20.0mg.L-1, the detection limit of 0.36mg.L-1, Relative standard deviation between 2.54%-3.13%, standard addition recovery was 93.6% - 103.0%. The method is accurate and can be used in the determination of total arsenic in shrimps. |
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