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DOI10.1021/es500016s
Perfluoroalkyl Acid Distribution in Various Plant Compartments of Edible Crops Grown in Biosolids-Amended soils
Blaine, Andrea C.1; Rich, Courtney D.1; Sedlacko, Erin M.1; Hundal, Lakhwinder S.2; Kumar, Kuldip2; Lau, Christopher3; Mills, Marc A.4; Harris, Kimberly M.5; Higgins, Christopher P.1
发表日期2014-07-15
ISSN0013-936X
卷号48期号:14页码:7858-7865
英文摘要

Crop uptake of perfluoroalkyl acids (PFAAs) from biosolids-amended soil has been identified as a potential pathway for PFAA entry into the terrestrial food chain. This study compared the uptake of PFAAs in greenhouse-grown radish (Raphanus sativus), celery (Apium graveolens var. dulce), tomato (Lycopersicon lycopersicum), and sugar snap pea (Pisum sativum var. macrocarpon) from an industrially impacted biosolids-amended soil, a municipal biosolids-amended soil, and a control soil. Individual concentrations of PFAAs, on a dry weight basis, in mature, edible portions of crops grown in soil amended with PFAA industrially impacted biosolids were highest for perfluorooctanoate (PFOA; 67 ng/g) in radish root, perfluorobutanoate (PFBA; 232 ng/g) in celery shoot, and PFBA (150 ng/g) in pea fruit. Comparatively, PFAA concentrations in edible compartments of crops grown in the municipal biosolids-amended soil and in the control soil were less than 25 ng/g. Bioaccumulation factors (BAFs) were calculated for the root, shoot, and fruit compartments (as applicable) of all crops grown in the industrially impacted soil. BAFs were highest for PFBA in the shoots of all crops, as well as in the fruit compartment of pea. Root-soil concentration factors (RCFs) for tomato and pea were independent of PFAA chain length, while radish and celery RCFs showed a slight decrease with increasing chain length. Shoot-soil concentration factors (SCFs) for all crops showed a decrease with increasing chain length (0.11 to 0.36 log decrease per CF2 group). The biggest decrease (0.54-0.58 log decrease per CF2 group) was seen in fruit-soil concentration factors (FCFs). Crop anatomy and PFAA properties were utilized to explain data trends. In general, fruit crops were found to accumulate fewer long-chain PFAAs than shoot or root crops presumably due to an increasing number of biological barriers as the contaminant is transported throughout the plant (roots to shoots to fruits). These data were incorporated into a preliminary conceptual framework for PFAA accumulation in edible crops. In addition, these data suggest that edible crops grown in soils conventionally amended for nutrients with biosolids (that are not impacted by PFAA industries) are unlikely a significant source of long-chain PFAA exposure to humans.


语种英语
WOS记录号WOS:000339227500024
来源期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/58231
作者单位1.Colorado Sch Mines, Dept Civil & Environm Engn, Golden, CO 80401 USA;
2.Metropolitan Water Reclamat Dist Greater Chicago, Chicago, IL 60611 USA;
3.US EPA, Off Res & Dev, Res Triangle Pk, NC 27711 USA;
4.US EPA, Natl Risk Management Res Lab, Off Res & Dev, Cincinnati, OH 45268 USA;
5.US EPA, Chicago, IL 60604 USA
推荐引用方式
GB/T 7714
Blaine, Andrea C.,Rich, Courtney D.,Sedlacko, Erin M.,et al. Perfluoroalkyl Acid Distribution in Various Plant Compartments of Edible Crops Grown in Biosolids-Amended soils[J]. 美国环保署,2014,48(14):7858-7865.
APA Blaine, Andrea C..,Rich, Courtney D..,Sedlacko, Erin M..,Hundal, Lakhwinder S..,Kumar, Kuldip.,...&Higgins, Christopher P..(2014).Perfluoroalkyl Acid Distribution in Various Plant Compartments of Edible Crops Grown in Biosolids-Amended soils.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(14),7858-7865.
MLA Blaine, Andrea C.,et al."Perfluoroalkyl Acid Distribution in Various Plant Compartments of Edible Crops Grown in Biosolids-Amended soils".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.14(2014):7858-7865.
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