Iodine concentration in Polish milk - variations due to season and region

Franciszek Brzóska; Zbigniew Szybiński; Bogdan Śliwiński

Vol 60, No 6 (2009)

Original paper

Submitted: 2013-02-15

Published online: 2009-12-30

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Iodine concentration in Polish milk - variations due to season and region

Franciszek Brzóska, Zbigniew Szybiński, Bogdan Śliwiński

Endokrynol Pol 2009;60(6):449-454.

Vol 60, No 6 (2009)

Original Paper

Submitted: 2013-02-15

Published online: 2009-12-30

Abstract

Introduction: Iodine concentration was studied in Polish consumer milk.
Material and methods: The milk originated from 13 provincial cities and 65 dairy cooperatives located in Poland.
Results: Milk iodine concentration in the winter season of 2007-2008 was 146.8 mg/L, with a standard deviation for the provinces of 27.9 mg/L and variation coefficient of 19.0% (n = 66 samples). Iodine concentration for provincial cities ranged from 76.3 to 192.0 mg/L. It was highest in the milk samples from the Lubelskie province (191.9 mg/L) and lowest in the milk samples from Podlasie (113.8 mg/L). In the summer season, milk iodine concentration averaged 100.4 mg/L, with a standard deviation of 38.9 ìg/L and variation coefficient of 38.8% (n = 27 samples).
Conclusions: Iodine concentration for provincial cities ranged from 63.8 to 173.7 mg/L. Compared to the winter season, milk iodine concentration in the summer season was lower by an average of 25.2%, with a standard deviation of 4.3% (Kielce) to 52.2% (Wrocław).