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This article in JEQ

  1. Vol. 19 No. 3, p. 598-602
     
    Received: July 14, 1989


    * Corresponding author(s):
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doi:10.2134/jeq1990.00472425001900030040x

Plant Uptake of Pentachlorophenol from Sludge-Amended Soils

  1. Cheryl A. Bellin and
  2. George A. O'Connor *
  1. Dep. of Agronomy and Horticulture, New Mexico State Univ., Las Cruces, NM 88003.

Abstract

Abstract

A greenhouse study was conducted to determine the effects of sludge on plant uptake of 14C-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 14C. 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.

Journal Article no. 1499. Agric. Exp. Stn., New Mexico State Univ. Although financial support for this study was provided in part by Cooperative Agreement CR-812687-02 with the USEPA, this report has not had USEPA's required peer and policy review and does not necessarily reflect the views of the agency.

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