ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY WITH DIRECT EXCITATION AT PICROGRAM LEVELS AND SIMUTANEOUS DETERMINATION OF TRACE ELEMENTS IN SERUM

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RASTGAR FARZANEH; LEROY M. J.F; ZARE K.

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Journal: JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY) Year:2001 | Volume:10 | Issue:38 Page(s): 2750-2750

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Title

ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY WITH DIRECT EXCITATION AT PICROGRAM LEVELS AND SIMUTANEOUS DETERMINATION OF TRACE ELEMENTS IN SERUM

Author(s)

RASTGAR FARZANEH | LEROY M. J.F | ZARE K. | Issue Writer Certificate

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Abstract

A Mo high-Power x-ray tube with an optical point focus, followed by a thich Mo filter, irradiates a small and thin sample consisting of 50 .µL of liquid deposited and evaporated on a 4 µ m thick polypropylene film. The x-ray emitted by this sample are detected by a Si(Li) detector placed close to the sample. This arrangement allows one to reach, with a very convenient routine measurement, detection limits in nanogram per milliliter range with total mass at picogram levels. Already hundreds of samples have heen measured under these conditions. A more sophisticated sample preparation (thinner film, very good positioning of the sample, or more than 50µL of solution) decreases the detection limits to picogram per milliliter levels, I.e., picogram of total mass. A prototype has been built with the aime of determining trace elements in samples avlaible in very small quantities. These samples are usually encountered in medicine or in hiologicale experiments on mice. The method is also important for large samples when preconcentration techniques are required. In this case the high sensitivity of the apparatus and the very low limits of detection make possible a direct determination, and thus avoid the contamination risk of the precontraion techniques [1,2]. The manipulation of the sample consists only in the deposition of the solution to be anlyzed on a polypropylene thin film. He purpose of this work is the apparatus characteristics regarding the limits of detection in multi elemental trace metals analysis and applied in human serum.

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APA: Copy

RASTGAR, FARZANEH, LEROY, M. J.F, & ZARE, K.. (2001). ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY WITH DIRECT EXCITATION AT PICROGRAM LEVELS AND SIMUTANEOUS DETERMINATION OF TRACE ELEMENTS IN SERUM. JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), 10(38), 2750-2750. SID. https://sid.ir/paper/70482/en

Vancouver: Copy

RASTGAR FARZANEH, LEROY M. J.F, ZARE K.. ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY WITH DIRECT EXCITATION AT PICROGRAM LEVELS AND SIMUTANEOUS DETERMINATION OF TRACE ELEMENTS IN SERUM. JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)[Internet]. 2001;10(38):2750-2750. Available from: https://sid.ir/paper/70482/en

IEEE: Copy

FARZANEH RASTGAR, M. J.F LEROY, and K. ZARE, “ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY WITH DIRECT EXCITATION AT PICROGRAM LEVELS AND SIMUTANEOUS DETERMINATION OF TRACE ELEMENTS IN SERUM,” JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), vol. 10, no. 38, pp. 2750–2750, 2001, [Online]. Available: https://sid.ir/paper/70482/en

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