Comparison of the determination of copper, nickel and zinc in contaminated soils by x‐ray fluorescence spectrometry and inductively coupled plasma spectrometry

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Abstract
Soil samples from a potentially contaminated site were prepared and analysed for their copper, nickel and zinc contents by both inductively coupled plasma (ICP) spectrometry and x‐ray fluorescence (XRF) spectrometry. Results obtained by XRF spectrometry were either comparable with or slightly higher than those obtained by ICP. However, when the results obtained by the two techniques were compared with the threshold values for contamination by the three metals, then each set of results led to the same conclusion with respect to the categorization of the site. Comparability between the two techniques was thus demonstrated and either may be used to screen soil for phytotoxic metals.

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