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建立微波消解电感耦合等离子体质谱(ICP-MS)法,同时测定水产品中硒(Se)和钼(Mo)的分析方法。采用微波消解样品后,经赶酸处理后,直接采用~(78)Se、~(98)Mo进行分析。选用~(72)Ge、~(115)In等元素作为内标混合液校正基体干扰和漂移,检出限硒为1.8μg/kg。采用国家标准物质扇贝(GBW10024)和紫菜(GBW10023)方法验证比较,测定值均在标准参考值范围内。该方法简便、快速,结果准确、可靠,适用于水产品中硒和钼的同时检测。
To establish a method for the simultaneous determination of selenium (Se) and molybdenum (Mo) in aquatic products by microwave digestion inductively coupled plasma mass spectrometry (ICP-MS). Samples were digested with microwaves and analyzed by ~ (78) Se and ~ (98) Mo directly after acid treatment. The interference and drift of substrate were corrected by using (72) Ge and ~ (115) In as the internal standard mixture. The limit of detection was 1.8 μg / kg. Using the national standard material scallop (GBW10024) and seaweed (GBW10023) method validation comparison, the measured values are within the standard reference range. The method is simple, rapid, accurate, reliable and suitable for the simultaneous detection of selenium and molybdenum in aquatic products.