EXTRACTION METHOD FOR PRETREATING ANALYTICAL SAMPLES Russian patent published in 2004 - IPC

Abstract RU 2232718 C1

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^оС for 30 min.

EFFECT: enabled maximum removal of cadmium for a short time and at room temperature.

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RU 2 232 718 C1

Authors

Temerev S.V.

Egorova L.S.

Dates

2004-07-20—Published

2003-02-10—Filed