DETERMINATION OF CONTENT OF HEAVY METALS IN HAIR WITH THE HELP OF
METHODS OF DIFFERENTIAL PULSED POLAROGRAPHY AND X-RAY FLUORESCENT
Shavgulidze N. V.1, Havtasi N. S.1, Enukidze L. G.1,
Harischarishvili I. Z.2,
R. I. Agladze, Tbilisi, Georgia.
Scientific and technical centre
National Taras Shevchenko University of Kiev,
article deals with a topical problem of microelement analysis of
biological substratums. Influence of toxic elements on organism was
examined. We mostly drew attention to the following two methods of
analytical analysis of bioassays: differential pulsed polarography and
results of simultaneous determination of ions of Pb (II), Zn (II) and Cu
(II) in hair were presented with the help of DPP method
and of RFA.
The comparative estimation of results from DPP and X-ray fluorescence
method was conducted.
differential pulsed polarography, X-ray fluorescence, bioassay,
fluorescent method of potable water
microelement composition determination/
N., Korotkov P. A., Kirilenko E. K.
The article is dedicated to
the actual problem of potable water quality control. The main analytic
methods of water quantitative analysis are considered. The
composition determination that is based on the roentgen
is proposed. The concentration analysis results of 8 portable water
samples are presented. Their evaluation is performed on the basis of the
given maximum allowable concentrations.
nourishment./ S.V. Fus
The basic aspects
of nutrient influence on complexion are considered. Sources
of the basic nutrients which can provide daily
maintenance for them are presented.
quantitative X-ray fluorescence analysis of bioassays based on the
maximum likelihood method
P. A. Korotkov,
D. Sc., prof,. E. K.
S. N. Galchenko*,
practical use results of sensitivity increase technique in quantitative
X-ray fluorescence analysis are presented. The technique is based on the
method of maximum likelihood and can be used in the cases of the
characteristic lines strong overlap and weak spectral lines in noise
background. The spectra of mercury and zinc amalgam were analyzed, at
first on the test samples of
and than on the test bioassays of blood plasma solid. Absolute error of
mercury content detection in bioassays was 2.4 times decreased.
Detection limit achieved by the method is 13 ppb, significantly lower
than obtained by standard spectral processing procedures.
trace concentration, maximum likelihood method, detection limit,
INCREASE OF QUANTITATIVE X-RAY FLUORESCENCE ANALYSIS OF BIOASSAYS BY THE
THERMAL RAPID CONCENTRATION METHOD
N. Galchenko, P. A. Korotkov, E. K. Kirilenko
The practical use results of
sensitivity increase technique in quantitative X-ray fluorescence
analysis are presented. The technique is based on the preconcetration of
elements by means of rapid thermal ashing. Spectra of hair and their
ashes are analysed. Sensitivity increase coefficients for heavy metals
and some other chemical elements are calculated.