一、规范制定的背景、意义油品中烯烃含量的多少是衡量油品质量和控制生产过程的一项重要指标,目前国内外仍用溴价、溴指数来表示油品的不饱和程度。其含量高低反映了油品性能的优劣,溴价、溴指数越高,油品的不饱和烃含量越高,安定性越差。所以在石油化工生产过程中,常常对溴价、溴指数进行严格地控制分析,以保证产品质量。通常溴价、溴指数的测定有目视法、电位滴定法和溴价、溴指数测定仪的电量法(即微库仑法)。实验 First, the normative background, the significance of the number of olefins in the oil content is a measure of oil quality and control of the production process is an important indicator, at home and abroad are still using bromine prices, bromine index to indicate the degree of unsaturation of oil. The level of its content reflects the pros and cons of the performance of the oil, bromine, bromine index higher, the higher the unsaturated hydrocarbon content of the oil, the poorer the stability. Therefore, in the petrochemical production process, bromine price and bromine index are often strictly controlled and analyzed to ensure product quality. Usually bromine, bromine index determination of visual method, potentiometric titration and bromine price, bromine index meter calorimeter (ie microcoulometry). experiment