Low Resolution Infrared Detection of Nickel Carbonyl at Less Than One Part per Billion Levels

Less than 1 ppb of Ni(CO) 4 has been detected, under STP conditions, in the presence of a 10 6 -fold excess of CO at 2 cm −1 resolution. Absorbance subtraction software was employed to minimize the interfering effects of the CO spectra. These results indicate that, using 20 m absorption length gas cells, Ni(CO) 4 concentrations on the order of 0.01 ppb are detectable using this technique.