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PHYTOFORENSICS: TREES AS BIOINDICATORS OF POTENTIAL INDOOR EXPOSURE VIA VAPOR INTRUSION
Wilson, J.L., V.A. Samaranayake, M.A. Limer, and J.G. Burken.
PLoS ONE 13(2): e0193247(2018)

Researchers analyzed PCE in tree-core samples collected at the Southeast Contamination Site in York, Nebraska, and then correlated results with groundwater, soil, soil-gas, indoor-air, and sub-slab PCE concentrations. Strong correlations between soil-gas, sub-slab, and indoor-air PCE concentrations and an interpolated tree-core PCE concentration surface indicated that trees can be valid indicators of potential vapor intrusion and human exposure to subsurface environment pollutants. The study used fewer than 60 trees in the vicinity of the source area and required ~12 hours of tree-core sampling with minimal equipment at the site to delineate vapor intrusion potential in the study area. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5815607/pdf/pone.0193247.pdf



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