Comparison between background concentrations of arsenic in urban and non-urban areas of Florida |
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| Institution: | 1. Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA;2. Florida Power and Light, 700 Universe Boulevard, Juno Beach, FL 33408, USA;1. Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Av. San Fernando No. 22, Col Sección XVI. C.P. 14080. Delegación Tlalpan, México, D.F., Mexico;2. Department of Paediatrics, University of Alberta, 3-591 ECHA, 11405 87th Ave, NW, Edmonton T6G 1C9, Canada;3. Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, A.P. 70228. Ciudad Universitaria. 04510, México, D.F., Mexico;4. Laboratorio de Genómica Funcional del Cáncer, Instituto Nacional de Medicina Genómica, Periférico Sur, No.4809. Col. Arenal Tepepan, C.P. 14610. Delegación Tlalpan, México, D.F., Mexico;5. Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152. San Bartolo Atepehuacan, C.P. 07730, México, D.F., Mexico;1. Sexual Medicine Service of Human Reproduction Sector, Department of Gynaecology and Obstetrics of the Faculty of Medicine of Ribeirão Preto, São Paulo University, Ribeirão Preto, SP, Brazil;2. Department of Pathology of the Faculty of Medicine of Ribeirão Preto, São Paulo University, Ribeirão Preto, SP, Brazil;1. Babe?-Bolyai University, Faculty of Environmental Science and Engineering, 30 Fantânele, 400294 Cluj-Napoca, Romania;2. Soil and Water Management and Crop Nutrition Laboratory, Joint FAO/IAEA Programme Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, Austria |
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| Abstract: | Arsenic contamination is of great environmental concern due to its toxic effects as a carcinogen. Knowledge of arsenic background concentrations is important for land application of wastes and for making remediation decisions. The soil clean-up target level for arsenic in Florida (0.8 and 3.7 mg kg?1 for residential and commercial areas, respectively) lies within the range of both background and analytical quantification limits. The objective of this study was to compare arsenic distribution in urban and non-urban areas of Florida. Approximately 440 urban and 448 non-urban Florida soil samples were compared. For urban areas, soil samples were collected from three land-use classes (residential, commercial and public land) in two cities, Gainesville and Miami. For the non-urban areas, samples were collected from relatively undisturbed non-inhabited areas. Arsenic concentrations varied greatly in Gainesville, ranging from 0.21 to approximately 660 mg kg?1 with a geometric mean (GM) of 0.40 mg kg?1, which were lower than Miami samples (ranging from 0.32 to 112 mg kg?1; GM=2.81 mg kg?1). Arsenic background concentrations in urban soils were significantly greater and showed greater variation than those from relatively undisturbed non-urban soils (GM=0.27 mg kg?1) in general. |
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