Selection of a photodetector for atomic absorption spectrometers with a two-stage probe atomizer

Khaybullin, R.R., Irisov, D.S., Salikhova, O.B., Zakharov, Y.A.

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For Russian citation (Opticheskii Zhurnal):

Хайбуллин Р.Р., Ирисов Д.С., Салихова О.Б., Захаров Ю.А. Выбор фотоприёмника для атомно-абсорбционных спектрометров с двухстадийным зондовым атомизатором // Оптический журнал. 2018. Т. 85. № 12. С. 42–48. http://doi.org/10.17586/1023-5086-2018-85-12-42-48

Khaybullin R.R., Irisov D.S., Salikhova O.B., Zakharov Yu.A. Selection of a photodetector for atomic absorption spectrometers with a two-stage probe atomizer [in Russian] // Opticheskii Zhurnal. 2018. V. 85. № 12. P. 42–48. http://doi.org/10.17586/1023-5086-2018-85-12-42-48

For citation (Journal of Optical Technology):

R. R. Khaĭbullin, D. S. Irisov, O. B. Salikhova, and Yu. A. Zakharov, "Selection of a photodetector for atomic absorption spectrometers with a two-stage probe atomizer," Journal of Optical Technology. 85(12), 774-779 (2018). https://doi.org/10.1364/JOT.85.000774

Abstract:

A two-stage graphite atomizer with an independently heated tungsten probe has been investigated by shadow spectral visualization, which is a promising method for analyzing the direct atomic absorption of complex substances. Fall-offs in optical density of the formed Ag, Fe, and Al vapors and smoke are measured. The dependences of the shape and size of the analytical pulses of absorption on the size of the photometric zone in a graphite furnace, and on the photodetector type (multipixel photodetectors with spatial resolution and a simple photomultiplier), are established. It is shown that the multipixel photodetectors recommended earlier for one-stage atomization exhibit some advantages. However, for analytical purposes, this probe atomizer can be used successfully with a photomultiplier or photodiode.

Keywords:

atomic absorption spectrometry, graphite atomizer, probe atomization, shadow spectral visualization, photodetector

Acknowledgements:

The research was supported by the Program of the foundation for assistance to small businesses in the scientific and technical sphere "Start" and the grant No. 063100027 from the company BP.

OCIS codes: 300.1030, 300.6210, 040.5160

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