Particulate Copper in Soils and Surface Runoff from Contaminated Sandy Soils Under Citrus

Particulate copper in soils and surface runoff from contaminated sandy soils under citrus production

Santanu Bakshia, Zhenli L. Hea,*, Willie G. Harrisb

aIndian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, 2199 S Rock Rd, Fort Pierce, FL 34945.

bSoil and Water Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611.

*Corresponding author:

Zhenli He

Indian River Research and Education Center

Institute of Food and Agricultural Sciences, University of Florida

2199 S Rock Rd, Fort Pierce, FL 34945.

Tel: (772) 468-3922 ext109; Fax: (772) 468-5668; Email:

Electronic Supplementary Materials (ESM):

Journal name: Environmental Science and Pollution Research

Manuscript # ESPR-D-13-00543

Table S1 is provided in the Electronic Supplementary Material (ESM)

Relevant parameters used for chemical speciation with MINEQL+.

Sample / Na (µM) / Ca (µM) / Cu (µM) / Fe (µM) / Al (µM) / PO4 (µM) / CO3 (µM) / TOC (M) / Ionic Strength (µM)
Bulk soil sample / Alfisol / 0 ppm / 57.2±3.82 / 46.9±7.71 / 2.06±0.32 / 2.96±0.6 / 9.1±0.37 / 10.7±0.61 / 4.33±0.92 / 0.32±0.01 / 580±10
200 ppm / 53.5±0.45 / 771±54 / 15±6.9 / 0.99±0.023 / 0 / 0 / 3.4±0.22 / 0.23±0.2 / 1900±80
600 ppm / 0 / 875±1.1 / 428±3.2 / 0 / 0.064±0.009 / 0 / 3.01±0.92 / 0.21±0.003 / 2600±92
1000 ppm / 0 / 1400±320 / 1870±550 / 0 / 5.1±0.022 / 0 / 4.6±2.8 / 0.23±0.001 / 3500±79
pH 6.0 / 20.6±5.82 / 87±11 / 3.81±0.22 / 4.09±0.89 / 4.7±0.29 / 9.93±0.03 / 3.73±0.92 / 0.34±0.19 / 920±30
pH 7.0 / 35.5±8.75 / 112±6.9 / 2.6±0.1 / 3.25±0.03 / 0.53±0.097 / 9.95±0.02 / 5.77±0.91 / 0.35±0.01 / 1020±59
Spodosol / 0 ppm / 34.1±4.3 / 39±5.1 / 2.04±0.59 / 2.24±0.89 / 5.4±0.29 / 25±8.9 / 5.94±0.92 / 0.53±0.23 / 860±20
200 ppm / 37.6±2.2 / 340±59 / 10.3±0.12 / 2.21±0.53 / 9.4±0.55 / 30.3±8.2 / 7.2±0.21 / 0.57±0.09 / 2500±101
600 ppm / 0 / 1140±521 / 275±9.8 / 0.22±0.09 / 36±3.3 / 27±1.8 / 8.2±0.51 / 0.49±0.1 / 3200±36
1000 ppm / 0 / 1440±19 / 485±1.9 / 0.78±0.02 / 31.2±3.2 / 19.4±8.2 / 4.2±0.9 / 0.44±0.12 / 3900±69
pH 6.0 / 40.4±6.6 / 81.4±7.6 / 2.12±0.86 / 3.56±0.82 / 13±0.93 / 13±5.9 / 1.16±0.98 / 0.36±0.9 / 960±16
pH 7.0 / 29.9±4.9 / 2400±321 / 13±0.6 / 0.34±0.05 / 47±0.23 / 0 / 9.33±0.9 / 0.44±0.009 / 1430±17
Surface runoff water sample / Alfisol / 5750±30.2 / 3240±80 / 0.32±0.08 / 3.22±0.6 / 3.7±0.97 / 2.83±0.3 / 3.9±0.9 / 1.91±1.1 / 6800±103
Spodosol / 930±57 / 1990±51 / 0.47±0.009 / 1.43±0.92 / 2.2±0.98 / 6.3±0.91 / 2.73±0.81 / 1.83±0.9 / 8900±82

Captions of Figures for Electronically Submitted Materials:

Fig.S1. The relationship between soil pH (as adjusted with lime) and NH4OAc or M-3 extractable Cu in (A) Alfisol and (B) Spodosol.(Fig. S1 is provided as Electronic Supplementary Material)

Fig. S2. The relationships of percentages of residual Cu with pH (A) and oxide bound Cu with external Cu loading rate (B) of particulate matter (PM) from Alfisol and Spodosol; indicates that lime addition can convert Cu from other fractions to residual fraction due to raised pH.(Fig. S2 is provided as Electronic Supplementary Material).

Fig. S3. The XRD pattern of particulate matter collected from surface runoff water of (A) Alfisol and (B) Spodosol; indicates the dominance of quartz and calcite, smectite was undetectable.(Fig. S3 is provided as Electronic Supplementary Material).

Fig.S1is provided in the Electronic Supplementary Material (ESM)

Fig. S2is provided in the Electronic Supplementary Material (ESM)

Fig. S3 is provided in the Electronic Supplementary Material (ESM)