模擬汚染土壌からの全アンチモンの溶出挙動

抄録

Antimony was designated as one of the Requiring Surveillance Items in the Japanese Environmental Quality Standards for Water which was renewed in 1993. Total amounts of antimony {antimony(III) + antimony(V)} solubilizcd from the polluted soils added antimony compounds were determined under the various conditions of pH, temperatures and extracting times by hydride generation-atomic absorption spectrometry. The total amounts of antimony solubilized from the polluted soils increased with rising pH, temperature and extracting time of samples. The order of largeness of solubilization from the polluted soils was sulfide < oxide < salt of antimony. Also, the total amounts of antimony solubilized from polluted soils with distilled water were 0.27% of total antimony in the soil containing oxide antimony (S-2), 0.19% of that in the soil containing antimony sulfide (S-3) and 0.40% of that in the soil containing soluable salt of antimony (S-4), respectively. From the results of comparing the analytical data using one tenth of official sample amounts with the data based on the official rule, it was proved that the solubilization experiment could be done with one tenth of official sample amounts of soils.