电感耦合等离子体质谱法(ICP-MS)快速检测全血中铅和镉

来源 :浙江预防医学 | 被引量 : 0次 | 上传用户:wzlzcy_yt190057
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目的:建立电感耦合等离子体质谱仪(ICP-MS)快速测定全血中铅镉元素的方法。方法采集正常人血6份,全血样品经1%HNO3溶液配制的0.1%Triton X-100溶液稀释后,以115 In、209 Bi作为在线内标,经电感耦合等离子体质谱仪快速分析全血中的铅、镉含量。结果测定冻干牛血(GBW09139g)国家标准物质,铅、镉含量均在标准值范围内。标准曲线在0~30μg/L范围内相关系数均为r=0.9999,铅检出限为0.2μg/L,镉检出限为0.1μg/L,相对标准偏差均<10%,回收率为90%~97%。结论该法可以快速测定全血中铅和镉,有较强的抗干扰能力,分析周期短,可以满足分析测试要求,适用于大量日常样品的测定。
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