SYMPOSIA PAPER Published: 01 January 1990
STP18971S

Determination of Extractable Organic Halides in Soils and Oily Wastes by Pyrolysis/Microcoulometric Titration

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Two pyrolysis/microcoulometric titration methods for the determination of extractable organic halides in soils and oily waste are described. The first method involves the washing of soil sample in a column packed with granular activated carbon with a dilute nitrate solution to remove interfering inorganic halides. The organic halides are subsequently determined by pyrolysis/microcoulometric titration of the sample soil-activated carbon mixture. The second method involves the extraction of soil or oily waste samples with a mixture of octanol and 1 M sulfuric acid. The organic halides are extracted into the octanol phase and then analyzed by pyrolysis/microcoulometry. The inorganic halides are removed by extraction into the aqueous phase. The second method has the advantage of extending the technique to the analysis of a broader spectrum of organic halides including polar compounds such as chloroacetic acid

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Lieu, VT
Woo, VH
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Developed by Committee: D34
Pages: 298–306
DOI: 10.1520/STP18971S
ISBN-EB: 978-0-8031-5123-9
ISBN-13: 978-0-8031-1293-3