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稀散金属中的硒,是一个与人类生存环境相关的元素。无数的事实证明,环境中的硒在悄悄地影响着人类。当某地的土壤中缺硒或贫硒了,该地农作物含硒就不足,随即满足不了人与动物及植物对硒的需求,导致人、畜中发生新陈代谢的紊乱,人就会出现患克山病、大骨节病、肌肉萎缩及婴儿猝死等地方病;而动物中就会流行白肌病(症状是弓背、不愿行走等,死亡后在颈椎深层肌呈白垩色条纹,在心肌坏死的心膜处可见灰白色斑痕或扩散点)等。科学家已查明,硒在环境中具有生物化学作用,它是预防饮食性肝坏死的“第三因子”组成部分;是机体还原系统中谷胱甘肽过氧化物酶的活性中
Selenium scattered metal, is an element associated with the human environment. Numerous facts have proved that selenium in the environment quietly affects humans. When some of the soil in the lack of selenium or selenium, the crop of selenium is not enough, and then can not meet the human and animal needs of plants and selenium, resulting in metabolic disorders in humans and animals, people will have grams Mountain sickness, Kashin-Beck disease, muscular dystrophy and sudden infant death and other endemic diseases; and animals will be prevalent in white myopathy (the symptoms are arched, unwilling to walk, etc., after death in the deep cervical muscle was chalky stripes in the heart of myocardial necrosis Membrane Department can be seen gray spots or diffusion points) and so on. Scientists have identified that selenium has a biochemical role in the environment and is an integral part of the “third factor” in preventing diet-induced liver necrosis; a component of glutathione peroxidase in the body’s reduction system