Iodine in Estonian agricultural biospehere
1997
Kalmet, R. (Estonian Agricultural Univ., Tartu (Estonia))
The iodine content in Estonian ground rocks varies from 0.13 to 0.42 mg/kg, in quaternary sediments, depending on texture, it is 0.17...0.59 mg/kg. The iodine content of soils depends to a considerable extent rather on their distance from the sea than soil forming rocks. The iodine content of soils of coastal areas is up to 52 mg/kg, while in the inland it is in 1 mg/kg. In carbonaceous soils, rich in humus and with heavier texture there is more iodine than in acid sandy soils with low humus content. In the Baltic Sea there has been found 0.4 mg/L iodine. In the water of wells of inland the iodine content is 0.0...3.5 microngrams/L, but in the island and seashores 3.5 microngram/L. In the food and feedstuff of East- and South-East-Estonia the iodine content is lower than in the same products produced on the islands
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