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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Aelion, C. Marjorie Davis, Harley T. Lawson, Andrew B. Cai, Bo McDermott, Suzanne |
| Description | Author Affiliation: Aelion CM ( School of Public Health and Health Sciences, University of Massachusetts Amherst, 715 No. Pleasant Street, Amherst, MA 01003, USA); Davis HT ( Department of Environmental Health Sciences, University of South Carolina, 921 Assembly Street, Columbia, SC 29208, USA); Lawson AB ( Division of Biostatistics and Epidemiology, Medical University of South Carolina, 135 Cannon Street, Suite 303, Charleston, SC 29425, USA.); Cai B ( Department of Epidemiology and Biostatistics, University of South Carolina, 800 Sumter Street, Columbia, SC 29208, USA.); McDermott S ( Department of Family and Preventive Medicine, University of South Carolina, 3209 Colonial Drive, Columbia, SC 29203, USA.) |
| Abstract | Understanding temporal and spatial variation in soil chemicals is critical in exposure assessments. We measured eight metals in subsamples, duplicates (~0.3 m), and repeat soil samples taken 1-6 years after initial sampling (~5 m). We estimated variance components (VCs) of metal concentrations using nested analyses accounting for sampling area, land use and soil type, and calculated coefficients of variation (CVs) for repeat sample pairs. Total variance for all metals was similar, but VCs were proportioned differently by metal and sample type. Spatial variation explained the majority of variance in duplicate samples. CVs of metal concentrations were not significantly different over the long time interval, but repeat samples had larger VCs for unexplained error. Sampling area and land use were important for Ba and Mn, and Pb and Hg, respectively. Results suggest metals are stable over long times and suitable for exposure assessments, but that individual metal behavior should be considered. |
| File Format | HTM / HTML |
| ISSN | 02697491 |
| e-ISSN | 18736424 |
| DOI | 10.1016/j.envpol.2013.10.018 |
| Journal | Environmental Pollution |
| Volume Number | 185 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-02-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Open |
| Subject Keyword | Discipline Environmental Discipline Science Environmental Exposure Soil Pollutants Chemistry Risk Assessment Spatio-temporal Analysis Research Support, N.i.h., Extramural |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Pollution Medicine Toxicology |
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