一般认为婴儿每天维生素D的摄入量应为400国际单位或10微克。过去报告:人乳的维生素D含量极低,而母乳喂养的婴儿却不发生佝偻病。最近日本和法国的学者发现人乳的含水部分中有水溶性的维生素D硫酸盐,过去则仅测定人乳脂质部分中的维生素D含量。为此,作者用Nield氏改进的三氯化锑反应法对产后3～8天的22例和产后4～6周的14例妇女乳汁的含水部分,测定了维生素D硫酸盐的浓度,发现在 It is generally assumed that infant’s intake of vitamin D per day should be 400 IU or 10 micrograms. Past reports have shown that human milk contains very low levels of vitamin D, whereas breast-fed babies do not develop rickets. Recently, Japanese and French scholars have found that water-soluble vitamin D sulfate is present in the aqueous portion of human milk, whereas in the past, only the amount of vitamin D in the human milk lipid fraction was determined. To this end, the author of Nield’s improved antimony trichloride reaction method for postpartum 3 to 8 days in 22 cases and 4 to 6 weeks postpartum women 14 cases of women’s aqueous portion of the determination of vitamin D sulfate concentration found in the