Application of Portable XRF in On-site Determination of Heavy Metals in Agricultural Soil and Comparison with Laboratory Analysis
This paper studied the application of portable X-ray fluorescence spectrometer (p-XRF) in the field determi-nation of heavy metal contents of As,Cu,Cr,Ni and Pb in agricultural soil,evaluated the accuracy,accuracy and sys-tematic error of p-XRF,and compared it with conventional laboratory analysis methods. The experimental results show that portable XRF can quickly and accurately determine a variety of heavy metal elements in agricultural soil,and has the advantages of real-time,nondestructive,non-destructive and high efficiency. Compared with the traditional laborato-ry analysis method,the portable XRF analysis results have better accuracy and reliability,and the operation is simple,time-saving and labor-saving,which can provide timely heavy metal pollution information for agricultural production. In soil samples,the determination coefficients between the concentrations of As,Cr,Cu,Pb and Ni measured by p-XRF and those measured by laboratory analysis reached 0.8,showing a good linear relationship. The experimental results show that the portable XRF has important application value in the field determination of heavy metals in agricultural soil,and provide a useful reference for the application of portable XRF in the field of agriculture.
portable X-ray fluorescence spectrometeragricultural soilheavy metalson site determinationlaboratory analysis
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