Abstract

Abstract A new practical approach to quantitative X-ray microanalysis of very small volumes of biological fluids, combining wavelength dispersive analysis and the use of thin films as supports is presented. The results from this technique are compared with those obtained using earlier methods and were found as predicted from theoretical considerations to be very accurate. Because of the favourable ratios between the detected characteristic radiation and the background radiation coupled with the resultant shorter periods of analysis, the use of this new technique of X-ray microanalysis for liquid samples not only saves time, but also smaller elemental concentrations can be detected. Suitable procedures to subtract background radiation are presented and discussed.

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