【摘要】 研究利用干灰化法消解大豆色拉油 ,用氢化物发生 -原子荧光法测定其中的痕量砷 ,对消化方法、样液介质及酸度、还原剂 (KBH4)浓度、干扰离子、还原掩蔽剂等影响因素进行了探讨、得出试验的最佳条件。试验结果准确 ,灵敏度高 ,重现性好 ,方法简便、快速 ,适合于植物油中痕量砷的测定 ,方法的回收率在 86 .9%～ 98.0 %之间 ;线性范围为 0～ 2 0 0ng ml;检出限为 0 .19ng ml。更多还原

【Abstract】 Using dry ashing to digestion soy salad oil in this paper and determination micro amounts arsenic by HG-AFS were studied, the method of digestion, medium and acid concentration, the concentration of reducing agent (KBH 4), interferences elements, reducing shelter were investigated, and the best experiment condition was obtained. This method proved to be accurate, high sensitivity, repeatable, simple, rapid, and it is suitable for the analysis in oil, under the conditions proposed, there is a linear relationship in the range of 0-200ng/ml, and its detection limit is found to be 0.19ng/ml and its recovery is between 86.9%-98.0%.更多还原