b'Sensitive Methods forNovel research indicates that tetramethylgermanium could be used in the Organoiodide Speciation detection of organohalides in complex mixtures.T he purpose of this project was to investigate the utility of tetramethylgermanium as a chemical ionization reagent gas for the detection of organohalides using gas chromatography. Chemical ionization with tetramethylgermanium resulted in efficient formation of tetramethylgermanium -organohalide adduct ions. Additionally, initial evidence TOTAL APPROVED AMOUNT:suggests that these adduct ions fragment less than the equivilent adducts $125,000 over 1 year formed when tetramethylsilane is used as the chemical ionization reagent gas, PROJECT NUMBER:suggesting tetramethylgermanium may have utility in detection of organohalides in 20A1049-008 complex mixtures.PRINCIPAL INVESTIGATOR: Christopher ZarzanaCO-INVESTIGATOR:Gary Groenewold, INLMass spectrum of iodopentane ionized with chemical ionization using tetramethylgermanium as the reagent gas.67'