Determination of volatile fatty acids in landfill leachates by ion-exclusion chromatography

✍ Scribed by Atsushi Yamamoto; Akio Yasuhara; Shuji Kodama; Akinobu Matsunaga; Shigeru Suzuki; Shino Mohri; Masato Yamada

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 136 KB
• Volume: 27
• Category: Article
• ISSN: 1615-9306
• DOI: 10.1002/jssc.200301679

✦ Synopsis

Abstract

An ion‐exclusion chromatographic method with on‐line desalinization for the determination of volatile fatty acids in landfill leachates is described. Highly sensitive conductivity detection of the organic acids was achieved by using dilute p‐hydroxybenzoic acid solution as an eluent. Interference with mineral acids was reduced by treatment with barium chloride solution prior to desalinization. A silver‐loaded cation‐exchange guard column for the desalinization was installed in series with the analytical column to avoid the contamination of organic acids. This method features detection limits of 0.01 mg L^–1^ formic acid, 0.02 mg L^–1^ acetic acid, 0.05 mg L^–1^ propionic acid, and 0.1 mg L^–1^ butyric acid, respectively, with an injection of 20 μL sample. Application of the on‐line desalinization LC method is illustrated for leachate samples from a Japanese sanitary landfill.