Orta-García Sandra Teresa, Ochoa-Martinez Angeles Catalina, Carrizalez-Yáñez Leticia, Varela-Silva José Antonio, Pérez-Vázquez Francisco Javier, Pruneda-Álvarez Lucia Guadalupe, Torres-Dosal Arturo, Guzmán-Mar Jorge Luis, Pérez-Maldonado Iván N
Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico.
Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, Mexico.
Arch Environ Contam Toxicol. 2016 Apr;70(3):452-63. doi: 10.1007/s00244-015-0239-3. Epub 2015 Nov 14.
The purpose of this study was to assess the levels of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethane (DDE), and four heavy metals (arsenic, cadmium, and lead) in outdoor surface soils (50 samples) collected from the metropolitan area of Monterrey in Mexico. Total PBDEs levels ranged from 1.80 to 127 µg/kg, with mean total PBDEs level of 14.2 ± 21.5 µg/kg (geometric mean ± standard deviation). For PCBs, the mean total level in the studied soils was 23.5 ± 20.2 µg/kg (range 4.0-65.5 µg/kg). An important finding in our study was that all soil samples (100%) had detectable levels of the metabolite p,p'-DDE. Moreover, the mean total DDT level (∑p'p-DDT and p'p-DDE) was approximately 132 ± 175 µg/kg. The mean levels for arsenic, cadmium, and lead in soil were 5.30 ± 1.35 (range 1.55-7.85) mg/kg, 2.20 ± 1.20 (range 0.65-6.40) mg/kg, and 455 ± 204 (range 224-1230) mg/kg, respectively. Our study has several limitations, the most notable of which is the small sample of soils evaluated. However, this screening study provided concentration data for the occurrence of POPs and four heavy metals in soil from the metropolitan area of Monterrey, Nuevo Leon, Mexico, and taking into consideration that soil is an important pathway of exposure for people, a biomonitoring program for the surveillance of the general population in the metropolitan area of Monterrey, Nuevo Leon is deemed necessary.
本研究的目的是评估从墨西哥蒙特雷大都市区采集的50份户外表层土壤样本中多溴二苯醚（PBDEs）、多氯联苯（PCBs）、滴滴涕（DDT）、二氯二苯二氯乙烷（DDE）以及四种重金属（砷、镉和铅）的含量水平。总PBDEs含量范围为1.80至127微克/千克，总PBDEs平均含量为14.2±21.5微克/千克（几何平均值±标准差）。对于PCBs，所研究土壤中的总平均含量为23.5±20.2微克/千克（范围为4.0 - 65.5微克/千克）。我们研究中的一个重要发现是，所有土壤样本（100%）中均检测到代谢物p,p'-DDE的含量。此外，总DDT平均含量（∑p'p-DDT和p'p-DDE）约为132±175微克/千克。土壤中砷、镉和铅的平均含量分别为5.30±1.35（范围为1.55 - 7.85）毫克/千克、2.20±1.20（范围为0.65 - 6.40）毫克/千克和455±204（范围为224 - 1230）毫克/千克。我们的研究存在一些局限性，其中最显著的是所评估的土壤样本数量较少。然而，这项筛查研究提供了墨西哥新莱昂州蒙特雷大都市区土壤中持久性有机污染物和四种重金属的浓度数据，鉴于土壤是人们重要的暴露途径，因此认为有必要开展一项针对新莱昂州蒙特雷大都市区普通人群监测的生物监测计划。
