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2014 ; 194
(ä): 254-261
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Concentrations of lead, cadmium and barium in urban garden-grown vegetables: the
impact of soil variables
#MMPMID25163429
McBride MB
; Shayler HA
; Spliethoff HM
; Mitchell RG
; Marquez-Bravo LG
; Ferenz GS
; Russell-Anelli JM
; Casey L
; Bachman S
Environ Pollut
2014[Nov]; 194
(ä): 254-261
PMID25163429
show ga
Paired vegetable/soil samples from New York City and Buffalo, NY, gardens were
analyzed for lead (Pb), cadmium (Cd) and barium (Ba). Vegetable aluminum (Al) was
measured to assess soil adherence. Soil and vegetable metal concentrations did
not correlate; vegetable concentrations varied by crop type. Pb was below
health-based guidance values (EU standards) in virtually all fruits. 47% of root
crops and 9% of leafy greens exceeded guidance values; over half the vegetables
exceeded the 95th percentile of market-basket concentrations for Pb. Vegetable Pb
correlated with Al; soil particle adherence/incorporation was more important than
Pb uptake via roots. Cd was similar to market-basket concentrations and below
guidance values in nearly all samples. Vegetable Ba was much higher than Pb or
Cd, although soil Ba was lower than soil Pb. The poor relationship between
vegetable and soil metal concentrations is attributable to particulate
contamination of vegetables and soil characteristics that influence
phytoavailability.