Before revision: Heavy metals such as mercury are formed on the earth 's crust and made into solutions with ground water through certain natural processing and pH changes occurring in the soil.Ralston N. Nanomaterials: Nano-selenium captures mercury.
After revision: Heavy metals such as mercury are formed on the Earth 's crust and made into solutions with ground water through certain natural processing and pH changes occurring in the soil.Ralston N. Nanomaterials: Nano-selenium captures mercury.