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Determination of volatile fatty acids in landfill leachates by ion‐exclusion chromatography
Author(s) -
Yamamoto Atsushi,
Yasuhara Akio,
Kodama Shuji,
Matsunaga Akinobu,
Suzuki Shigeru,
Mohri Shino,
Yamada Masato
Publication year - 2004
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200301679
Subject(s) - chemistry , leachate , chromatography , formic acid , butyric acid , acetic acid , ion chromatography , column chromatography , thermal conductivity detector , detection limit , gas chromatography , environmental chemistry , organic chemistry
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.