An ecological model for heavy metal contamination of crops and groundwater
1976
Jorgensen, S.E.
A model for heavy metal contamination of crops and ground water was set up and tested. It was found possible to use the model to predict the heavy metal concentration in crops. The model indicates that Pb is limiting the use of sludge as a soil conditioner, and that in most cases, contamination of crops seems to be a greater danger than contamination of ground water. However, when soil with a high humus or clay content is used at a pH close to 7.00, municipal sludge can be used in considerable quantities without danger.
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