INDUCTIVELY COUPLED PLASMA MASS-SPECTROMETRY IN CONTEMPORARY HYGIENIC EXAMINATIONS OF ATMOSPHERIC AIR

Introduction. The optimal conditions for taking of samples, sample preparation and selective quantitative measurement from one sample of 19 chemical elements, such as lithium, magnesium, aluminum, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, selenium, strontium, cadmium, tungsten, thallium, lead in the atmosphere using inductively coupled plasma mass spectrometry method are proved and recommended for the practical application. Material and methods. The settings of a quadrupole inductively coupled plasma mass spectrometer are described. The optimal scale for sample preparation to eliminate the “matrix” effect is proposed. The device operation mode with a collision/reaction cell for interference suppression for overlays, as well as the choice of the internal comparison element is proved. Limit of detection (LOD) and limit of quantitation (LOQ) are calculated for each element. Results. The determination technique of 19 priority elements in the atmosphere using ISP-MS (Methodological guidelines 4.1. 3481-17) is developed. Accordingly, to obtained results the level of 19 elements in the atmosphere appeared to be at the level of reference concentrations (RfC) and much lower than the daily mean of threshold limit value for all elements with a measurement accuracy of 14 to 21%. Conclusion. The technique developed (Methodological guidelines 4.1. 3481-17) has been used when studying samples of the atmosphere in different territories of the Russian Federation.

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