| 摘要 |
FIELD: analytical methods. ^ SUBSTANCE: objective of invention is pretreating solid samples of environmental objects to enable quantitative determination of cadmium by physicochemical techniques. According to invention, cadmium is removed from the surface and bulk of natural object using a stratifying system composed of thiopyrine, 0.02-0.03 mole, trichloroacetic acid, 1.2-1.6 mole, orthophosphoric acid, 0.03-0.05 mole, and distilled water to 1 l total volume. Natural material is treated with above-defined system at 25 for 30 min. ^ EFFECT: enabled maximum removal of cadmium for a short time and at room temperature. ^ 1 tbl |
