| 摘要 |
PROBLEM TO BE SOLVED: To remove a polar impurity component, a fatty acid or both of them in an analyzing method of a component in crude oil before refining. SOLUTION: In the analyzing method of residual agricultural chemicals in crude oil before refining, a water washing process and a PSA solid-phase column treatment process are added to a pretreatment process and the polar impurity component is removed by the water washing process while the fatty acid is removed by a PSA solid-phase column treatment process. COPYRIGHT: (C)2007,JPO&INPIT
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