Method for detecting sulfide with reducing property

The present invention provides a method for rapidly and sensitively detecting a reducing sulfide. According to the present invention, an ion mobility spectrometry of a photoelectric emission ionization source is adopted as a base detection technology, purified air is adopted as carrier gas and drift gas, and oxidizing reagent ions formed through a photochemical reaction of air under ultraviolet light irradiation are adopted to determine the reducing sulfide; and the method adopts the oxidation reaction to oxidize the reducing sulfide so as to achieve the characteristic detection of the reducing sulfide, and perform quantitative analysis with characteristics of high sensitivity and wide linear range.