Comparison of selenium level in different time periods in typical selenium-deficient areas of Shaanxi

• Published in: Selenium Research for Environment and Human Health: Perspectives, Technologies and Advancements pp. 5 - 6
• Main Authors: Wang, X.Y., Li, H.R., Yang, L.S.
• Format: Book Chapter
• Language: English
• Published: CRC Press 2020
• Edition: 1
• Subjects: Stanleya Pinnata; Se Deficiency; Low Se Content; Kashin Beck Disease; Se Concentration; Se Level; Se Rich Soil; Tan's Classification; Eum Orthic Anthrosol; Se Fertilization; Hydride Generation Atomic Fluorescence Spectrometry; Se Fertilizers; Se Content; Socioeconomic Development; Exogenous Se; Total Se Content; Shaanxi Province; Se Nutrition; Selenoprotein Biosynthesis; Soil Se; Low Se; Selenium Content; Se Application; Total Se
• ISBN: 9781138390140; 1138390143
• DOI: 10.1201/9780429423482-2

Selenium (Se) is an essential trace element for humans. The relationship between Se nutrition and health has always been a hot research field. There is a low-Se belt in the natural environment of China, which extends from northeast to southwest of the country. Mathematical statistics and geostatistical methods were used to analyze the temporal variation characteristics of Se content in different periods of Shaanxi Province. The Se content of the soil increased twofold, which changed from the Se deficiency state in the 1980s to the potential Se deficiency state in the 2010s according to Tan's classification of soil Se content. Sources of food have been generally more Se-enriched, and the Se level of the inhabitants has been significantly improved. There are obvious differences in the improvement of Se level. Although soil Se has been separated from the state of Se deficiency as a whole in Shaanxi, some areas are on the verge of Se deficiency or potential Se deficiency.