FIELD: oilfield chemicals preparation.
SUBSTANCE: invention is intended for sample preparation of oilfield chemicals. The substance of the invention lies in the fact that carry out: sampling oilfield chemicals; determining the polarity or non-polarity of an oilfield chemical sample; in the case of a polar sample of the oilfield chemical, adding a non-polar solvent to the polar sample of the oilfield chemical and performing extraction; selection of an extract of a polar sample of an oilfield chemical; introducing a solution of silver nitrate into the extract of the polar sample of the oilfield chemical, providing an excess of silver ions until precipitation stops; determination of the mass fraction of organochlorine compounds in a polar sample of an oilfield chemical; in the case of a non-polar sample of the oilfield chemical, the following is carried out: introducing a solution of silver nitrate into the non-polar sample of the oilfield chemical, providing an excess of silver ions until precipitation ceases; determination of the mass fraction of organochlorine compounds in a polar sample of an oilfield chemical.
EFFECT: ensuring the possibility of preparing a chemical sample, which ensures the highest possible accuracy and reliability of determining the quantitative content of organochlorine compounds present in the reagents, as well as reducing the number of extraction cycles and reducing the volume of reagents required to isolate chlorine ions from an oilfield chemical sample.
9 cl, 2 dwg
