本方法用于通过电位滴定法测定碳氢化合物中的硫化氢和硫醇硫。典型的样品包括汽油、石脑油、轻循环油和在环境温度和压力下为液体的类似馏分油。定量下限为0.2质量ppm硫醇（硫）和1.0质量ppm硫化氢（硫）。

This method is for determining hydrogen sulfide and mercaptan sulfur in hydrocarbons by potentiometric titration. Typical samples include gasoline, naphtha, light cycle oils and similar distillates that are liquid at ambient temperature and pressure. The lower limit of quantitation is 0.2 mass-ppm mercaptan (as sulfur) and 1.0 mass-ppm hydrogen sulfide (as sulfur).