关键词: 盐含量, 无机氯, 分析方法

Abstract: Three test methods of determining salt content in crude oil are reviewed and compared. Between two extracting-titration methods, ASTM D6470 and SY/T0536, test results of the former are more authoritative. The definitions of salt content in extracting-titration test method and conductive test method (ASTM D3230) are various, thus their application cases are slightly varied, such as when concerning corrosions during the transportation, storage and processing of crude oil, extracting-titration test method is preferred; when focusing on the effect of total salt content on processing and product qualities, conductive test method is available. Anyway, in order to present a reliable test result of salt content, it is always important that the collected crude oil sample should be well representative.

Key words: salt content, inorganic chlorine, analytical method