摘要：Selenium (Se) is an essential nutrient of fundamental importance to human biology. Unfortunately until now very limited research has been conducted on selenium in Algeria. This study was conducted in order to quantify selenium levels in twenty foods and two hundred sixty six plasma collected in Souk Ahras (Northeast of Algeria). The samples had been analyzed using inductively coupled plasma-mass spectrometer (ICP-MS). The selenium concentration in food samples ranged from 22 to 1324 μg/kg. All plants alimentation have very low selenium levels than animals. The highest values were found in fish (sardine and tuna), then meats and eggs. However, cereals, fruits and vegetables contained the lowest levels. Whereas the selenium rate (mean ± SD) found in this population was (83.89 ± 21.61 μg/l). The mean value for 130 men was (85.75 ± 22.26 μg/l) and (82.08 ± 20.82 μg/l) for women but this difference was not statistically significant. Whereas, when samples were divided into age groups statistical analyses revealed a significant difference from thirty to fifty year and the difference is highly significant from ten to twenty year and very highly significant after fifty years. We also noted that the serum selenium rates increases from birth to 50 years and decrease after.
