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目的了解南京地区产妇母乳含量与母血、脐血铅含量之间的相关性。方法采用石墨炉原子吸收光谱法对南京地区170例产妇抽取母乳与母血、脐血中铅含量进行测定,并进行三者之间的相关性分析。结果母血铅含量为14.87-121μg/L,均值为69μg/L;铅含量为15.42-114.32均值为48.74;母乳铅含量为12.42-99.36μg/L,均值为50.23μg/L。母血铅/脐血铅含量呈正相关(r=0.398,P<0.05);母血铅/初乳铅含量呈正相关(r=0.571,P<0.01);乳铅/脐血铅含量呈正相关(r=0.489,P<0.05)。结论脐血铅含量呈正相关,血铅可通过胎盘转运给胎儿,母血铅含量与脐血铅水平及母乳铅水平受母血铅含量影响。
Objective To understand the correlation between maternal milk content and maternal blood and umbilical cord blood lead content in Nanjing. Methods Graphite furnace atomic absorption spectrometry was used to determine the levels of lead in umbilical blood of 170 maternal mothers and their maternal blood samples from Nanjing area. The correlation between them was analyzed. Results The lead content of maternal blood was 14.87-121μg / L with a mean of 69μg / L. The lead content was 15.42-114.32 with an average of 48.74. The lead content of breast milk was 12.42-99.36μg / L with a mean of 50.23μg / L. There was a positive correlation between lead content in maternal blood lead and umbilical cord blood (r = 0.398, P <0.05), positive correlation between lead content in maternal blood and colostrum (r = 0.571, P <0.01) r = 0.489, P <0.05). Conclusion There is a positive correlation between cord blood lead levels and blood lead can be transported to the fetus through the placenta. The levels of lead in cord blood and umbilical cord lead and the levels of lead in breast milk are affected by lead levels in the blood of pregnant women.