Department of Food Biochemistry and Analysis, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland.
Department of Human Nutrition and Dietetics, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland.
Int J Environ Res Public Health. 2022 Jan 1;19(1):455. doi: 10.3390/ijerph19010455.
Due to undesired influence, the accumulation of rare earth elements (REE) in the human body has been discussed recently. However, it is usually limited to the study of the population living where REE ores and mines are located. The aim of the experiment presented was to analyse the concentration of REE in the hair of children and teenagers living in two areas of Madagascar in relation to the place of residence, nutritional status, age and sex. REE concentration was determined in scalp hair of 262 of subjects (5-19 years old) by an inductively coupled plasma-optical emission spectrometer. The content of total REE in the Malagasy hair was in the range of 0.79-44.15 mg/kg. The nutritional status was evaluated by Cole's index, and malnutrition of children was observed more often in village areas. The concentration of these elements was also determined in 20 samples for the estimation of environmental exposure. No significant differences were detected in the content of these elements in the studied regions, although the mean value was always higher in soil samples from the Antananariva region. The obtained data suggest dependence between REE concentration in the hair and age, and nutritional status of the examined subjects. Even if the observed correlations are weak, they contribute significant knowledge on the accumulation of REE in the bodies of children living in areas that are not recognised as deposits of these elements.
由于不良影响，人体中稀土元素 (REE) 的积累最近受到了关注。然而，这通常仅限于研究居住在 REE 矿石和矿山所在地的人群。本实验旨在分析生活在马达加斯加两个地区的儿童和青少年头发中的 REE 浓度与居住地点、营养状况、年龄和性别之间的关系。通过电感耦合等离子体-光学发射光谱仪，对 262 名（5-19 岁）受试者的头皮头发中的 REE 浓度进行了测定。马达加斯加头发中的总 REE 含量在 0.79-44.15mg/kg 范围内。营养状况通过科尔指数进行评估，在农村地区观察到儿童营养不良的情况更为常见。还对 20 个样本中的这些元素进行了测定，以评估环境暴露情况。尽管安塔那利佛地区土壤样本的平均值总是较高，但在研究区域中未检测到这些元素含量的显著差异。所得数据表明，头发中 REE 浓度与受检者的年龄和营养状况之间存在相关性。即使观察到的相关性较弱，但它们对生活在未被认为是这些元素沉积区的儿童体内 REE 积累的情况提供了重要的知识。
