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The determination of major and trace element contents in soils was developed by acid digestion method combined with particle-induced X-ray emission spectrometry (PIXE). The digestion of soils was achieved by using nitric acid (HNO 3 ), hydrochloric acid HCl and hydrogen peroxide (H 2 O 2 ) with repeated additions. A 20μL aliquot from the digested samples was evaporated on the...
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