Grayson's heavy metal concentrations made simple atmospheric dust an all too real danger.

Heavy metal concentrations are found to be higher near the creek mouth compared with the nearshore waters.

High metal concentrations are able to be carried in solution because of the high salinity.

It is able to degrade xenobiotics even in the presence of high heavy metal concentrations.

The heavy metal concentration in the sediments on the river bed have decreased dramatically.

Heavy metal concentrations in the Seine are relatively high.

All farm products and soil quality are closely monitored for metal concentration.

These can measure metal concentrations down to parts per billion.

Water quality standards are based on total or dissolved metal concentrations.

Motivations for controlling heavy metal concentrations in gas streams are diverse.