Metal contamination of vineyard soils in wet subtropics (southern Brazil).
The vine-growing areas in Brazil are the dampest in the world. Copper maximum value registered in this study was as much as 3200 mg kg(-1), which is several times higher than reported for vineyard soils in temperate climates. Other pesticide-derived metals accumulate in the topsoil layer, surpassing in the old vineyards the background value several times for Zn, Pb, Cr and Cd. Copper is transported to deeper soils' horizons and can potentially contaminate groundwater. The soils from basaltic volcanic rocks reveal the highest values of Cu extracted with CaCl(2), demonstrating a high capacity of copper transference into plants. When evaluating the risks of copper's toxic effects in subtropics, the soils from rhyolitic volcanic rocks are more worrisome, as the Cu extracted with ammonium acetate 1M surpasses the toxic threshold as much as 4-6 times.
Mirlean
Nicolai
N
Fundação Universidade do Rio Grande, Department of Geosciences, Av. Italia - km-08, Campus Carreiros, CEP 96201-900 Rio Grande-RS, Brazil. dgeonmir@furg.br
Roisenberg
Ari
A
Chies
Jaqueline O
JO
D001938:Brazil; D002104:Cadmium / Q000032:analysis; D002980:Climate; D003300:Copper / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods; D007501:Iron / Q000032:analysis; D007854:Lead / Q000032:analysis; D008670:Metals / Q000032:analysis*; D009532:Nickel / Q000032:analysis; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D027843:Vitis / Q000254:growth & development*; D014876:Water Pollution / Q000032:analysis*; D014920:Wine; D015032:Zinc / Q000032:analysis
D008670:Metals; D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead; D003300:Copper; D009532:Nickel; D007501:Iron; D015032:Zinc