Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandran, Iran.
Environ Monit Assess. 2012 Jan;184(1):375-80. doi: 10.1007/s10661-011-1974-1. Epub 2011 Apr 15.
Human milk is usually the only source of food for infants during the first 4 to 5 months of their life. Maternal environmental mercury exposure is directly related to fish consumption or amalgam filling. In this research, 38 human milk samples were collected from mothers of Lenjan area who were not occupationally exposed with mercury. Mercury concentration in human milk was determined by AMA254 Mercury Analyzer. A level of mercury was examined in relation to somatometric, demographic and dental amalgam parameters. Obtained results showed that only dental amalgam significantly increased the mercury level in human milk (p < 0.001). The mean mercury concentrations in milk of mothers without teeth fillings (n = 13), with one to three teeth fillings (n = 10), and four to eight teeth fillings (n = 15) were 2.87, 5.47, and 13.33 μg/l, respectively. The result of this study also showed a positive correlation of mercury milk levels with the number of teeth fillings of the mother (p < 0.05, r = 0.755). The estimated weekly intake of mercury of a breastfed infant in this study was, in some cases, higher than provisional tolerance weekly intake recommended by FAO/WHO, which pose a threat to their health.
人乳通常是婴儿生命的头 4 到 5 个月唯一的食物来源。母体环境汞暴露与鱼类消费或汞合金填充直接相关。在这项研究中，从没有职业性接触汞的 Lenjan 地区的母亲那里收集了 38 个人乳样本。人乳中的汞浓度用人乳 AMA254 汞分析仪测定。检查了汞水平与人体测量学、人口统计学和牙科汞合金参数之间的关系。获得的结果表明，只有牙科汞合金会显著增加人乳中的汞含量（p < 0.001）。没有补牙（n = 13）、有 1 到 3 颗补牙（n = 10）和有 4 到 8 颗补牙的母亲的人乳中汞的平均浓度分别为 2.87、5.47 和 13.33μg/l。这项研究的结果还表明，人乳中的汞水平与母亲补牙的数量呈正相关（p < 0.05，r = 0.755）。在本研究中，母乳喂养婴儿每周摄入的汞估计量在某些情况下高于粮农组织/世卫组织建议的暂定每周耐受摄入量，这对他们的健康构成威胁。
