Search academic texts

Registration Number

0215U001677, 0111U006704 , R & D reports

Title

Investigation of "graphite furnace-filter" at atomic absorption determination of heavy metals

popup.stage_title

Head

Zacharia Alexander Nickolaevitch, Кандидат хімічних наук

Registration Date

16-04-2015

Organization

Odesa I.I.Mechnikov national university.Pervomaisk institute.

popup.description2

The object of study - atomizing system "electrothermal graphite tube-graphite furnace-filter" atomizer "GRAPHITE" atomic absorption spectrophotometer "Saturn" and a model of its work. Purpose of the work - study the optimal geometry, operating parameters and analytical characteristics of atomizer "electrothermal graphite tube-graphite furnace-filter" with atomic absorption determination of lead (Pb), cadmium (Cd), arsenic (As), selenium (Se) and nickel (Ni) in natural waters and certain foods, including the use of magnesium palladium (Pd-Mg) chemical modifier. As a result of optimized operating and structural parameters atomizer "graphite furnace-filter" (GFF), set its rate of heating when using atomizer "GRAPHITE", and invite relevant physical-mathematical model, which, unlike the current account of the contribution of heat transfer from the hot walls of the furnace through the bed a protective gas (argon) in GFF. It is shown that the use of graphite furnace-filter and Pd-Mg CM allows you to: - 2-3 times greater sensitivity of ET AAS determination of Pb, Cd, As, Se and Ni; - Increase the oven temperature ashing stage to 900-1000 ° C, and thereby improve the thermal pre-preparation of study materials; - Eliminate or significantly reduce the background absorption of light, as well as the influence of the main components of the objects of analysis on the results of the corresponding measurements. The results of research as a basis for complex sensitive, simple and reliable methods of direct ET AAS analysis of certain foods and natural waters. The results of research were presented at scientific conferences, they are published in the form of articles in professional, including international scientific journals. Them received 3 patents.

Product Description

popup.authors

Арабаджи Михайло В'ячеславович
Журавльов Олександр Сергійович
Хома Руслан Евгенійович

popup.nrat_date

2020-04-02