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锌在机体内约占体重的0.004％(约2～2.5g)。以眼、发、肝、骨、肾、生殖器、皮肤含量最高。血浆锌正常值是63～116μg％,女比男稍低,妊娠和哺乳期妇女明显降低。锌的需要量因年龄以及其它情况而不同,一般日需量0.3mg/kg。1973年世界卫生组织人体营养微量元素专家委员会建议,成人每日11mg,少年14mg,孕妇14.6mg,乳母27.3mg。食物含锌量以贝壳类、肉类、果仁等丰富。吸收部位在小肠,通过便(72％)、汗(20％)排泄。其吸收情况复查,尤其与其它微量元素间的相互作用受到影响,一般
Zinc in the body about 0.004% of body weight (about 2 ~ 2.5g). In the eyes, hair, liver, bone, kidney, genital, skin content highest. Plasma zinc normal is 63 ~ 116μg%, female slightly lower than the male, pregnancy and lactating women was significantly lower. Zinc requirements due to age and other circumstances vary, the general daily demand 0.3mg / kg. 1973 World Health Organization Human Nutrition Trace Elements Experts Committee recommends adult 11mg daily, juvenile 14mg, pregnant women 14.6mg, lactating 27.3mg. Zinc content of food to shellfish, meat, nuts and other rich. Absorption site in the small intestine, by the stool (72%), sweat (20%) excretion. The absorption of the review, in particular, the interaction with other trace elements affected, the general