The principle objective of the research described herein is to synthesize new materials for the selective sensing of carcinogenic chromium(VI) and arsenic(V) containing species. Both metal ions have been proven to have serious adverse health effects and are regulated by the EPA. As it exists in its predominant environmental form, C1O4 is isostructural with the sulfate ion (SO42"); hence, sulfate transport proteins uptake C1O42", wherein it damages DNA.1 Likewise, the predominant environmental form of As(V), ASO43", is isoelectronic with PO43", and so it competes in cellular uptake of phosphate." The EPA has set maximum contaminant level goals (MCLG) for chromium and arsenic at 0.10 and 0,05 ppm respectively."'The enforcement of these regulations requires the development of sensitive and selective sensors for these carcinogens.
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