X射线荧光光谱法同时测定土壤样品中碳氮等多元素

Determination of C, N and Other 36 Elements in Soil Samples by XRF

报道了采用粉末压片制样-X射线荧光光谱法测定土壤样品中C、N、S、Cl、Br、Hf、Mo、Sn、Sc、Na、Mg、Al、Si、P、K、Ca、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Ga、As、Rb、Sr、Y、Zr、Nb、Ba、La、Ce、U、Th、Pb等38种元素的分析方法。着重研究了C和N的分析条件、存在问题和注意事项。所拟方法的检出限,精密度和准确度大多数满足覆盖区多目标地球化学调查样品分析质量的要求。

A method for the determination of C,N,S, Cl, Br, Hf, Mo, Sn, Sc,Na,Mg,Al,Si,P,K,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Ga,As,Rb,Sr,Y,Zr,Nb,Ba,La,Ce,U,Th and Pb in soil samples by XRF with powder pellet sample preparation has been developed. Ultra collimator and special analysis crystals (such as RX60 and RX45) are used for C and N analysis. Prepared sample pellets should be put in a desiccator in order to (avoid) the pollution on C, N and Cl. The analysis conditions and the points for attention during the analysis of C and N are discussed in details.The detection limits, precision and accuracy for most elements by this method can meet the requirements of sample analysis in multi-objective geochemical survey.