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Persistent organic pollutants and heavy metal concentrations in soil from the metropolitan area of Monterrey, Nuevo Leon, Mexico

Orta García, Sandra Teresa | Ochoa Martínez, Ángeles Catalina [autor/a] | Carrizalez Yáñez, Leticia [autor/a] | Varela Silva, José Antonio [autor/a] | Pérez Vázquez, Francisco Javier [autor/a] | Pruneda Álvarez, Lucia Guadalupe [autor/a] | Torres Dosal, Arturo [autor/a] | Guzmán Mar, Jorge Luis [autor/a] | Pérez Maldonado, Iván Nelinho [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Contaminación de suelos | Metales pesados | Arsénico | Cadmio | Jade | Contaminantes orgánicos persistentes | Difeniléteres polibromados | DDT (Insecticida) | Diclorodifenil dicloroetileno | Bifenilos policloradosTema(s) en inglés: Soil pollution | Heavy metals | Arsenic | Cadmium | Jade | Persistent organic pollutants | Polybrominated diphenyl ethers | DDT (Insecticide) | Dichlorodiphenyl dichloroethylene | Polychlorinated biphenylsDescriptor(es) geográficos: Monterrey (Nuevo León, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Archives of Environmental Contamination and Toxicology. volumen 70, número 3 (April 2016), páginas 452-463. --ISSN: 1432-0703Número de sistema: 2033Resumen:
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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.

Recurso en línea: http://link.springer.com/article/10.1007%2Fs00244-015-0239-3
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Disponible para usuarios de ECOSUR con su clave de acceso

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. eng

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