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In metal analysis of soil, why are water (or slightly acidic water) extracts often used for determining total metal amounts rather than the soil itself?
Accepted Answer
Water or slightly acidic water extracts are often used for determining total metal amounts in soil analysis because they effectively solubilize the metals present. Direct analysis of the soil itself can be challenging due to the complex matrix and presence of various insoluble compounds. The extraction process allows for separation and concentration of the metals, making their quantification easier and more accurate.
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