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Plant Uptake of Pentachlorophenol from Sludge‐Amended Soils
Author(s) -
Bellin Cheryl A.,
O'Connor George A.
Publication year - 1990
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1990.00472425001900030040x
Subject(s) - pentachlorophenol , festuca arundinacea , bioconcentration , daucus carota , chemistry , soil water , effluent , horticulture , phytoremediation , agronomy , environmental chemistry , biology , poaceae , environmental science , environmental engineering , bioaccumulation , ecology , heavy metals
A greenhouse study was conducted to determine the effects of sludge on plant uptake of 14 C‐pentachlorophenol (PCP). Plants included tall fescue ( Festuca arundinacea Schreb.), lettuce ( Latuca sativa L.), carrot ( Daucus carota L.), and chile pepper ( Capsicum annum L.). Minimal intact PCP was detected in the fescue and lettuce by gas chromatography/mass spectrometry (GC/MS) analysis. No intact PCP was detected in the carrot tissue extracts. Chile pepper was not analyzed for intact PCP because methylene chloride extracts contained minimal 14 C. The GC/MS analysis of soil extracts at harvest suggests a half‐life of PCP of about 10 d independent of sludge rate or PCP loading rate. Rapid degradation of PCP in the soil apparently limited PCP availability to the plant. Bioconcentration factors (dry plant wt./initial soil PCP concentration) based on intact PCP were <0.01 for all crops, suggesting little PCP uptake. Thus, food‐chain crop PCP uptake in these alkaline soils should not limit land application of sludge.