After some recent intense wildfires in Northern California, scientists tested samples of singed soil and were disturbed by their findings: It was laden with a cancer-causing metal called hexavalent ...
Chromium occurs naturally in soils and waters predominantly as trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)). Cr(III) is relatively insoluble and less mobile, often forming stable ...
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