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| 食用植物油中痕量砷检测的萃取协同干灰化前处理方法 |
| Determination of trace arsenic in edible vegetable oil by extractioncombined with dry ashing pretreatment |
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| DOI： |
| 中文关键词: 植物油 砷 痕量萃取 协同 干灰化 检测 |
| 英文关键词:vegetable oil arsenic trace extraction synergism dry ashing determination |
| 基金项目: |
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| 中文摘要: |
| 建立了一种萃取协同干灰化前处理检测植物油中痕量砷的方法。通过方法检出限、定量限、方法精密度、方法重复性、样品的加标回收率和样品对比实验对方法的准确性进行了验证。结果表明：方法的检出限为0.25 μg/L，定量限为0.80 μg/L；方法精密度相对标准偏差为4.94%；方法重复性相对标准偏差为8.54%；方法回收率为87.00%～111.00%；样品对比结果相对标准偏差在633%以下。建立的方法能应用于植物油中痕量砷的测定，且结果准确可靠。 |
| 英文摘要: |
| A method for the determination of trace arsenic in vegetable oil by extraction combined with dry ashing pretreatment was developed. The accuracy of the method was verified by the detection limit, quantitative limit, method precision, method repeatability, standard recovery rate and sample comparison experiments. The results showed that the detection limit and quantitative limit of the method were 0.25 μg/L and 0.80 μg/L respectively. The relative standard deviation of method precision was 4.94%. The relative standard deviation of method repeatability was 8.54%. The recovery rate was 87.00%-11100%. The relative standard deviation of sample comparison results was less than 6.33%. The method established could be applied in the determination of trace arsenic in vegetable oil and the results were accurate and reliable. |
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