关键词: 氯化物, 氯含量, 微库仑

Abstract: By optimizing sampling temperature, the accuracy of oxidative microcoulometric method for determining total chlorine content in crude oils is improved. Through the comparison of various methods for measuring inorganic and organic chlorine content, it is concluded that for inorganic chlorine content the test result of ASTM D6470 is more authoritative than that of SY/T 0536 method; for organic chlorine content using the difference between total chlorine content from microcoulometric method and inorganic chlorine content from ASTM D6470 is more credible than that of ASTM D4929 method. Finally an analytical scheme for measuring the total chlorine, inorganic and organic chlorine contents in crude oils is proposed, i.e. oxidative microcoulometric method for total chlorine, ASTM D6470 for inorganic chlorine and using the difference between these two for organic chlorine.

Key words: chloride, chlorine content, microcoulometry