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The aim of this work was the assessment of the age, sex, way of nutrition, environment and health state influence on zinc content in hair of population living in the Middle Pomerania. Within years of 2005-2007 hair coming from 416 persons from a ten months old child to a 75 years old person was analyzed. All people were divided into four age groups: children (0-15 years), youth (16-25), adults (26-50) and the elderly (51-75). 3-centimeters long hair (counting from the skin) were put to chemical analyze. Then dried samples were weighed and mineralized with mixture of nitric and tetraoxochloric acides (mixed in proportion of 5:1). Zink determination was done by method of atomic absorption spectrophotometry using spectrometer ASA-3. Average zinc content in hair of researched population amounted to 167±58 7g g-1. Least of all zinc was ascertained in children hair (av. 125 7g g-1), and most of all in youth (194 7g g-1). In all age groups females had more of this metal (av. 180 7g g-1) than males (156 7g g-1). Average value of zinc for people living in a village was 147 7g g-1, and living in towns and cities 181 7g g-1. The least of zinc we have found at persons being on the meat- or milk-free diet (av. 157 7g g-1) and the most at persons that did not restrict in eating meat and milk products (197 7g g-1). The persons suffering from cardiovascular disease or hyperplasia prostate had adequately 221 and 195 7g g-1 Zn, considerably above the level in hair of without symptoms diseases persons (156 7g g-1). Smaller content of this element had persons suffering from atherosclerosis or hypertension (adequately 132 and 142 7g g-1).
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Heavy metals in some peat soils of Middle Pomerania

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The content of heavy metals in peat soils of north part of Słupsk Region was low. Enrichment factors for Cd, Zn and Mn indicates on their anthropogenic origin in studied peat soils, and for Cr and Ni - natural origin. However copper may be of anthropogenic or natural origin depending on location. The farther from sea peat soils are situated the higher concentration of those metals is.
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Copper in human hair of Middle Pomeranian population

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The scalp hair has been suggested as a potentially valuable tissue, where short-term variation are averged out. Besides, hair has been demonstrated to be a major vehicle for the excretion of toxic metals, which concentration may be to 10 times higher than the amount found in blood or urine. Undoubtedly, hair analysis is a non-invasive method of diagnosis. The content of metals in hair depends on many factors. Hair samples (N = 416) were collected between the years 2003 and 2004 from Middle Pomerania (north Poland) population. Cu was determined by the electro-thermal graphite furnance AAS method. Hair from Middle Pomerania people contented in average 12.7 μg g-1 (range 5.2-32.0 μg g-1). The level of copper in hair was the function of age, sex, obesity, nutrition and disease, but was not the function of stature and weight. The obtained results were confirmed in comparison with the findings of other authors. Hair analysis might soon become a powerful diagnostic tool in monitoring of environmental exposure and studying the nutritional status of individuals.
A population of Hydrobia sp. (Hydrobia ulvae Pennant and Hydrobia ventrosa Montagu) was studied in the Polish coastal zone (up to 3 nautical miles) of the Baltic Sea within the open coast of Polish Middle Pomerania. Abundance, wet biomass, and the frequency of Hydrobia were determined in the coastal waters, including estuaries of the Wieprza, Słupia, Łupawa, Łeba rivers and open coastal in the vicinity of Czołpino (Słowinski National Park) and Władysławowo. The frequency (F) of Hydrobia in the open coast of the Middle Pomerania amounted to 39%, while in the coastal zone of the open sea (Czołpino and Władysławowo) there were no snails. The abundance of Hydrobiidae, in the coastal zone surveyed, ranged from 0 to 398 specimens per m-2 of the bottom ( x = 33.7 spec. m–2). Wet biomass of this bivalve ranged from 0 to 12.0 gww m-2 ( x = 1.0 gww m-2). Apparently Hydrobia sp. has found better conditions for living and development in the estuary Middle Pomerania coast compared to open coastal. The abundance of this gastropods in the estuary zone was 27-fold higher than in the open coast and the wet weight was about 1.5-fold higher, respectively. Hydrobiidae plays an important role in the monitoring of benthos of the Baltic Sea, not constitutes a distinct food base of animals (fish and other hydrobionts).
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