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Urine samples were collected in the morning and were stored frozen at −20 ℃ until analysed. The samples were wet digested by HNO3+HCLO4 before determination. The solution was directly analyzed by ICP-MS for the determination of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu in human urine with rhenium internal standard calibration. The detection limits were 0.1-2.1 ng•L-1. Certified reference material of human hair GBW 09101a was analyzed by the described method. The analytical values of the certified reference material showed closed agreement with the reference values. 相似文献
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中国成年男子18种器官、组织中56种元素含量研究 总被引:2,自引:0,他引:2
为进一步完善确定中国参考人器官、组织中元素浓度、负荷量等参数参考值的依据,在前两个阶段研究工作的基础上,在我国四个不同膳食类型地区(河北省、山西省、江苏省和四川省)补充采集了16例急死正常成年男子尸体肌肉、肋骨、肝等总共18种器官、组织样品,同时采集了这些地区各10名健康成年男性志愿者全血样,采用电感耦合等离子体质谱(ICP-MS)、电感耦合等离子体发射光谱(ICP-AES)和石墨炉原子吸收光谱(GFAAS)分析技术,测定了样品中56种元素浓度,估算了18种器官、组织和全身的负荷量.本文还从辐射防护角度,将本文所得结果与ICRP参考人参数、Iyengar的估算值等进行了比较. 相似文献
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Human feces were collected in acid-washed plastic containers for three consecutive days from 30 subjects of Zhenjiang area, the fecal samples for the three-days period were pooled, weighed and homogenized, then dried, ground and ashed at 相似文献
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山东某稀土矿区成人头发中15种稀土元素含量及分布特征初探 总被引:3,自引:0,他引:3
本研究以头发中的稀土含量和分布特征作为暴露的生物标志物,选用ICP-MS分析法,对矿区和对照区两村长期居住的农民头发进行15种稀土元素的含量研究。结果表明:矿区发样中各稀土元素的中位数(ng/g)为:La(124.9)、Ce(269.2)、Pr(21.4)、Nd(77.2)、Sm(9.3)、Eu(2.5)和Gd(8.4)均高于对照村(p<0.01),其余重稀土元素虽亦有稍高的趋势,但差异无统计学显著性。全部发样的稀土分布模式均为轻稀土富集重稀土亏损型(LaN/SmN>1和GdN/YbN>1),矿区发样轻稀土富集程度平均高出对照村3倍(p 0.01)。 相似文献
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