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This service provides a method for the simultaneous determination of inorganic anions (Cl-, SO42- and ClO3-) and cations (K+, Ca2+, Na+, Mg2+ and Li+) in wine by capillary electrophoresis-indirect ultraviolet detection (CE-UV) with dual-opposite end injection using 1-ethyl-3-methylimidazolium p-toluenesulfonate ([EMIm]TS) as the background electrolyte. [EMIm]TS acts as the running electrolyte and probe, generating the background signals for cations and anions under indirect UV light, consequently simplifying the electrophoretic medium. This method is robust and reliable for the sensitive and rapid analysis of the inorganic anions and cations, and it has potential in evaluating the quality of wine.