Hastings根据脂肪族硫醚能与元素碘形成一种络合物,后者在光谱的近紫外区有特徵吸收的原理,提出了测定原油及其馏分中的脂肪族硫醚的紫外分光光度法。以后,Hastings和Johnson以及Drushel和Miller又作了改进,在灵敏度、精确度方面都有很大提高。这个方法已被成功地应用于原油及其馏分的分析。关于天然气中甲硫醚的紫外分光光度法的测定尚未见报导,本试验的主要 Hastings, based on the principle that aliphatic sulfides form a complex with elemental iodine and the latter has a characteristic absorption in the near-ultraviolet region of the spectrum, proposes UV spectrophotometry for the determination of aliphatic sulfides in crude oil and its fractions. Later, Hastings and Johnson, as well as Drushel and Miller, made some improvements, both in terms of sensitivity and accuracy. This method has been successfully applied to the analysis of crude oil and its fractions. Determination of dimethyl sulfide in natural gas spectrophotometry has not been reported, the main test