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A simple and reliable method to extract and measure iodine in soils

✍ Scribed by A.A. Marchetti; L. Rose; T. Straume

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
449 KB
Volume
296
Category
Article
ISSN
0003-2670

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✦ Synopsis

A procedure was developed for the extraction of iodine from soil samples by alkaline ashing. After the extraction, the iodine was measured using gas chromatography. The method was validated using NIST Standard Reference Materials: San Joaquin Soil (SW 270!4), Montana Soil (SRM 2711) and Buffalo River Sediment (SRM 2704). The method gave consistently reproducible results that are in good agreement with the noncertified iodine concentrations reported by NIST, which were measured using neutron activation analysis. The method presented here requires relatively low cost equipment and can be performed in most environmental measurement laboratories. Also, since it has been demonstrated to be reliable for soils, it may help in the development of NIST certified soil standards for iodine.

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