| 摘要 |
The present invention represents compositions for the fixing of pentavalent arsenic, e.g., arsenates and arsenic acid, generally spread in the soil. The fixation is so carried out that the arsenic cannot be further spread, not even after an eventual further increase in soil acidity. The compositions comprise metal salts of iron, aluminum or chromium with a weak acid, preferably iron or aluminum acetate, which are spread on the soil containing the arsenic compounds.
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