Fig. 6From: Laboratory and field studies on the use of artificial mussels as a monitoring tool of platinum exposure in the freshwater environmentPlatinum concentrations in the water (a) and sediment (b; < 65 µm) from Olifantsnek and Bospoort Dam. Data for water from the AM collection site is from Labuschagne et al. [12]. Box-plots indicate minimum, 25th percentile, median, 75th percentile and maximum values. Stars show significant differences between the two impoundments (**p < 0.002, ****p < 0.0002)Back to article page