Effects of CE parameters and modifying substances on the quality of separation of trichloroacetic (TCA) extracts of salted Baltic herring meat were studied. The optimal separation parameters were as follows: capillary length 36 cm; voltage 20 kV; injection pressure 2 psi*s; capillary temperature 35^oC, detection wavelength 200 nm. Buffer enrichment with 20% acetonitrile and 40% methanol resulted in a slight improvement of the separation quality, while 20 mmol/L triethylamine (TEA) produced some improvement, but was a source of an additional peak in field A. Salt concentration ≥1% was shown to cause the peaks to fuse, to decrease in height, and to disappear completely at the concentration of 5%. Sample purification using solid phase extraction (SPE) and dialysis improved the separation, but was time-consuming or did not ensure that the full composition of the sample would be maintained. Sodium nitrate precipitation of Cl- ions produced no improvement in separation quality. Reduction in sodium chloride and trichloroacetic acid concentrations to below 1% and about 1.5%, respectively, by diluting TCA extracts with distilled water produced the best results by completely separating the peaks in all fields; the method proved the least time-consuming and ensured that the sample composition remained intact.