Determination of bromine in blood serum by 125 I excited x-ray fluorescence

Abstract
A radioisotope excited XRF method based on the use of five 10‐mCi 125I point sources arranged in a newly designed configuration is applied to the bromine determination in very small blood serum samples (⩽50 μL). The possibility of determination of 0.05 μg Br in blood serum during 100 s counting time with a standard deviation of ±10% is described. The simplicity and low cost of the present method are major advantages over the other nondestructive methods and render it suitable for medical laboratories.

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