作者选择重金属作业(以焊接电器元件为主)的孕妇作为接触组,同时选相似年龄、吸烟习惯、产次状况等以家庭主妇为主的无金属接触史的孕妇为对照组,两组各为26名。接触组女工大都在分娩前六周停止工作,发样通常在母亲分娩后一小时內、于新生儿洗头前,分别在枕骨区采集。为使母体发样更具代表性,作者根据孕期的头发生长速度,对母体发样只选采从头皮开始8厘米內的头发,经处理后,用无焰原子吸收分光光度法测定母 The author selected pregnant women with heavy metal work (welding electrical components as the main) as the contact group, and at the same time choose similar age, smoking habits, delivery status and other non-metallic housewife history of pregnant women as the control group, the two groups were 26. Most women in the contact group stopped working six weeks before delivery. Hair samples were collected in the occipital region before the newborn shampoo, usually within one hour of the mother’s delivery. In order to make the mother hair sample more representative, according to the author’s hair growth rate during pregnancy, the mother hair samples were selected only within 8 cm from the scalp within the hair, after treatment, non-flame atomic absorption spectrophotometric determination of the mother