gathering lens between the hollow cathode and sample. It does not include a specially designed burner, and it is anticipated that the inclu sion of such a burner would in crease the sensitivity of the system as much as tenfold. It is hoped that in a comparatively short time an abundance of inexpensive and reliable instruments will be avail able to the analyst.
ARL VACUUM X-RAY QUANTOMETERS* Vacuum x-ray analysis of all elements for the Iron and Steel Industries in cluding low concentra tions of Phosphorus— Sulfur—Silicon. Rapid analysis of elements in High and Low Alloy Steels-Cast I r o n Sinters — Slags — Ores.
Conclusions
A new technique is now available to the analytical chemist for de termining trace metal concentra tion. At present, several metals cannot be determined by this method, but it is possible that alternate atomizing methods will overcome this shortcoming. The only equipment available for studying or utilizing this phenome non is a modification of existing spectrophotometric equipment. I t is hoped, however, that this un favorable situation will soon be remedied. A wealth of research should be forthcoming from studying and applying this phenomenon. Here is a tool which will give us directly a measure of the number of atoms in the excited and ground state under any set of experimental con ditions. This should find direct ap plication to spectrographic and wave mechanical problems. Other possible uses include iso tope analysis. This, of course, would require high resolution. Analysis of exhaust gases from jet engines should be permissible di rectly in the exhaust gases. In the medical science, a start has already been made in the use of this method for the analysis of body tissue. The attraction in this case is the small amount of sample required. In chemical and metallurgical work the applications are countless and do not need further emphasis. No doubt much work remains to be done on interference studies, equipment design, etc., but it does seem that here we have a new ana lytical tool which will find much application to composition studies pertinent to many areas of funda mental and applied research.
SPECIAL FEATURES: Fixed and scanning spectrometers to analyze all elements from magnesium through uranium. • Simultaneous analysis of these elements in about two minutes. • Foolproof flexibility for rapid analysis of powders, liquids, and solid samples. • Economical —utilizes a vacuum system, eliminating the expense and supply problems of helium. • Dual sample handling facilities permit sample interchange without breaking vacuum. • Let ARL evaluate your analytical control or research requirements. Write today for complete information. *τ Μ.
Vacuum X-ray Quantometer Model 25,000
) APPLIED RESEARCH LABORATORIES, INC. _' BRANCH OFFICES
subsidiary of BAUSCH & IOMB INCORPORATED P. O. BOX 1710, GLENDALE 5, CALIFORNIA ί
NEW YORK
· PITTSBURGH · DETROIT · CHICAGO LAUSANNE. Switzerland * LONDON. England
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HOUSTON
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Circle No. 133 on Readers' Service Card VOL. 32, NO. 8, JULY 1960
LOS ANGELES
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