Chromium and nickel in roadside grapes.
Chromium and nickel concentration in roadside unwashed wine grapes and leaves is considered as a function of the distance from the suspected source, an isolated straight road. The analyses were performed with electrothermal atomization in a graphite furnace. The decrease in the concentration of the element can be described by means of a three-parameter exponential function c = A + (B - A)exp(-Cd), which allows the determination of the asymptotic level far from the emitting source (C infinity) and the pollution level (C0) at the edge of the road (d = 0). Least-squares nonlinear regression gives the estimation of the parameters A, B, and C. The results indicate that an effect is detectable up to a distance of about 50 m.
Pertoldi Marletta
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Dipartimento di Economia e Merceologia delle Risorse Naturali e della Produzione, Università degli Studi di Trieste, Italy.
Gabrielli Favretto
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Favretto
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D002857:Chromium / Q000302:isolation & purification*; D004785:Environmental Pollutants / Q000302:isolation & purification*; D005506:Food Contamination / Q000032:analysis; D005638:Fruit / Q000032:analysis*; D009532:Nickel / Q000302:isolation & purification*; D012044:Regression Analysis; D012494:Sampling Studies
D004785:Environmental Pollutants; D002857:Chromium; D009532:Nickel