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首页> 外文期刊>X-Ray Spectrometry: An International Journal >Determination of Pb, As, Cd and trace elementsin polluted soils near a lead–zinc mine usingpolarized X-ray fluorescence spectrometry and the characteristics of the elemental distribution in the area
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Determination of Pb, As, Cd and trace elementsin polluted soils near a lead–zinc mine usingpolarized X-ray fluorescence spectrometry and the characteristics of the elemental distribution in the area

机译：偏光X射线荧光光谱法测定铅锌矿附近污染土壤中的铅，砷，镉和微量元素及该区域元素分布特征

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Polarization energy dispersive X-ray fluorescence spectrometry was used in the determination of Pb, As and Cd, as well as Cr,Cu, Zn, Ni and other minor and trace elements in the soil samples taken from a polluted area by lead mine exploitation. Twodifficulties have to be overcome. One is strong overlap of Pb La over As Ka and another is lack of suitable certified reference materials. The different excitation conditions and analytical lines were tried to reduce the impact of overlap of Pb La over AsKa. When KBr was used as the second target, compared with Zr, the proportion from Pb La was reduced about six times. Even so, however, the overlap was not reduced enough to be ignored. The inductively coupled plasma atomic emission spectrometryand mass spectrometry methods were used to analyze parts of soil samples and provide data for compensating lack ofreference materials. By this method, the analytical concentration range of Pb, As and Cd were significantly extended. Theanalytical range of Pb, As and Cd were 1.4mg/g~4.2%, 0.6mg/g~9.3% and 0.5mg/g~1500ug/g, respectively. The high concentrationsof Pb, As and Cd were found in the samples in the vicinity of the Pb-Zn mine. The concentrations of Pb, As, Cd, Zn andCu were higher than the Class III in the Chinese environmental quality standard for soils. The highest concentrations of Pb, As,Cd and Zn in the soil samples were 14 960, 2726, 65 and 9439mg/g, respectively.
机译：极化能量色散X射线荧光光谱法用于测定铅矿开采污染区土壤样品中的铅，砷和镉以及铬，铜，锌，镍和其他微量和痕量元素。必须克服两个难题。一个是Pb La与As Ka的强烈重叠，另一个是缺乏合适的认证参考材料。尝试了不同的激发条件和分析线以减少Pb La重叠在AsKa上的影响。当将KBr用作第二目标时，与Zr相比，来自Pb La的比例减少了大约六倍。但是，即使如此，重叠的减少也不足以被忽略。电感耦合等离子体原子发射光谱法和质谱法被用于分析部分土壤样品，并提供数据以补偿标准物质的缺乏。通过这种方法，Pb，As和Cd的分析浓度范围显着扩大。 Pb，As和Cd的分析范围分别为1.4mg / g〜4.2％，0.6mg / g〜9.3％和0.5mg / g〜1500ug / g。在铅锌矿附近的样品中发现了高浓度的铅，砷和镉。铅，砷，镉，锌和铜的含量高于中国土壤环境质量标准中的Ⅲ类。土壤样品中铅，砷，镉和锌的最高浓度分别为14960、2726、65和9439mg / g。

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