一、前言目前,工业上测定硫化物,普遍采用碘量法。因该法中所用硫代硫酸钠和碘标准溶液不稳定,需要经常标定,特别是碘易挥发,测得数据波动性较大,因而在方法上有进一步研究改进的必要。关于不用碘量法测定气液相中硫化氢的方法,文献中早有报道,且只限于硫化钠一种。因其易被空气和溶液中的氧所氧化,溶液中硫离子的准确浓度必须不断的标定,手续繁琐,颇费时间,且数据重现 First, the preface At present, the industrial determination of sulfide, commonly used iodometric method. Due to the instability of the sodium thiosulfate and iodine standard solutions used in this method, it is necessary to calibrate frequently, especially when iodine is easy to volatilize, and the measured data have greater volatility. Therefore, there is a need for further improvement in methodology. Methods for the determination of hydrogen sulfide in gas-liquid phase without iodometric method have long been reported in the literature and are limited to one of sodium sulfide. Because of its susceptibility to oxidation by air and oxygen in solution, the exact concentration of sulfide ions in the solution must be continuously calibrated, complicated procedures, time-consuming and reproducible