The paper introduced the method of determining the methanoic acid, ethanoic acid and propanoic acid in bio-diesels via ion chromatography.

文章建立了用离子色谱法测定生物柴油中的甲酸、乙酸、丙酸的方法。

The method for preparing the 6-substituted-4-chromanone-2-methanoic acid has the characteristics of simple and safe operation and low production cost.

采用本发明的制备方法生产6-取代-4-色满酮-2-甲酸， 具有操作简单安全、生产成本低的特点。