Atomic emission characteristics of a premixed acetylene-nitrous oxide, total consumption flame.
It is well known that most of the burners presently used to produce high temperature, premixed flames have the tendency to be discouragingly wasteful of the sample solution, often bringing only a small fraction of the amount used into the flame. This paper reports on the construction and performance of a highly efficient total consumption burner that produces a nonturbulent acetylene-nitrous oxide flame from premixed gases. The eighteen flame emission detection limits tabulated for a select group of elements compare favorably with the best values heretofore reported in the literature, and the apparent freedom of alkaline earth emission from phosphate interference indicates the total consumption flame here described to be less subject to chemical interference than is the conventional diffusion flame. The relatively low cost burner that has been developed is convenient to operate and can be quickly assembled from commercially available components.
Flame spectra of vanadium, niobium, rhenium, titanium, molybdenum and tungsten
Abstract Line spectra of vanadium, niobium, titanium, molybdenum and rhenium of sufficient intensity to allow detection at the 1–10 p.p.m. level can be excited in fuel-rich, oxy-acetylene flames. For the strongest lines of tungsten, the sensitivity of detection is 90 p.p.m. Weak lines of zirconium, hafnium, osmium, tantalum and uranium are also observed in these flames. Recordings of the spectra are given along with wavelength tables of the strongest lines.
The determination of aluminum and beryllium by atomic absorption spectroscopy
Abstract The use of atomic absorption spectroscopy for the determination of aluminum and beryllium has been studied. The nitrous oxide-acetylene flame was found to be useful for the determination of trace amounts of either aluminum or beryllium. Beryllium can also be determined in an oxy-acetylene flame at the 1 p.p.m. level and upwards if the aqueous solution contains 10% of diethylene glycol diethyl ether. The determinations were essentially free from interferences.