Fig. 1. Lead removal from the Coeur d'Alene River and Camp Navajo soils by two 10 mM diethylenetriamine pentaacetic acid (DTPA) soil washes, two 10 mM rhamnolipid soil washes, toxicity characteristic leaching procedure (TCLP) extraction, and the DTPA soil test for plant-available metals. The error bars represent the standard deviations of triplicate samples. Numbers above the bars indicate the Pb removal in mg kg^-1.

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