Abstract
Anomalies in the concentrations of heavy metals in estuarine sediments may not be reliably detected based on the measured concentration values or the ratios of metal concentrations to those of a reference element because of natural variations in both. However, the departure of a measurement from a regression line between metal and reference element concentrations may serve as a criterion for detecting an anomaly. The procedure has been applied to a suite of 34 sediments from a Florida estuary.
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