HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (12) Citing Articles via Google Scholar Google Scholar Articles by He, Z. L. Articles by Yu, S. Search for Related Content PubMed Articles by He, Z. L. Articles by Yu, S. GeoRef GeoRef Citation Agricola Articles by He, Z. L. Articles by Yu, S. Related Collections Surface Water Quality Toxic Trace Metals Soil Chemistry

DIVISION S-6—SOIL & WATER MANAGEMENT & CONSERVATION

Transport of Heavy Metals in Surface Runoff from Vegetable and Citrus Fields

^a Univ. of Florida, Institute of Food and Agricultural Sciences, Indian River Research and Education Center, 2199 South Rock Road, Fort Pierce, FL 34945
^b College of Natural Resource and Environmental Sciences, Zhejiang Univ., Huajiachi Campus, Hangzhou 310029, P.R. China

^* Corresponding author (zhe{at}mail.ifas.ufl.edu)

Heavy metal accumulation in agricultural soils increases export potential of the metals to the environment. The concentrations of dissolved heavy metals (Cd, Co, Cr, Cu, Fe, Ni, Pb, Zn, Mn, and Mo) in surface runoff were monitored over a 2-yr period at 11 sites of vegetable farms and citrus groves in Florida. A total of 1277 surface runoff samples were analyzed for dissolved metals and extractable metals in the surface soils of each field site were determined. Concentrations of the metals in the runoff ranged widely from nondetectable level to 2.80, 18.5, 14.1, 1475, 9227, 39.3, 30.4, 1401, 2118, and 15.0 µg L^–1 for Cd, Co, Cr, Cu, Fe, Ni, Pb, Zn, Mn, and Mo, respectively. Spatial and temporal variations in the concentrations of heavy metals and runoff discharge were noted among the different sites. Ninety-four, 96, 55, 32, 93, and 61% of the samples had metal concentrations below the detection limits for Cd, Co, Cr, Ni, Pb, and Mo, respectively, whereas 0.62, 30, and 23% of the samples had Cu, Fe, and Mn higher than their drinking water standards. Annual loads of dissolved metals in the runoff varied widely among monitoring sites and were different between the year 2001 and 2002. The concentrations of heavy metals in the surface runoff were associated with the accumulation of the metals in the soils. The 0.01 M CaCl₂ extractable Cu, Fe, Zn, and Mn in soil were found to significantly correlate with Cu, Fe, Zn, and Mn concentrations in the surface runoff.

Abbreviations: Ac, acetate • ICP-AES, inductively coupled plasma atomic emission spectrometer

This article has been cited by other articles:

				Z. L. He, M. Zhang, X. E. Yang, and P. J. Stoffella Release Behavior of Copper and Zinc from Sandy Soils Soil Sci. Soc. Am. J., August 22, 2006; 70(5): 1699 - 1707. [Abstract] [Full Text] [PDF]