May 22, 2014 / LEA-S500 Elemental Analyzer for Analysis of Hair

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May 22, 2014 / LEA-S500 Elemental Analyzer for Analysis of Hair

LEA-S500 Elemental Analyzer for Analysis of  Hair

 

Determination of concentration of both  vital (essential) and toxic elements in hair allows to diagnose mineral exchange violations , to reveal  necessary and toxic microelements ratio in a human body , to establish the hidden reasons of  diseases, the acquired diseases of metabolism, influence of toxins on a human body during a manufacturing process and in everyday life, at criminal poisonings.

   SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. hair fig1 LEA-S500

The procedure of measurements (quantitative determination) of  25 macro - and microelements(Ag, Al, Ba, B, Be, Ca, Cr, Cu, Fe, F, K, Mg, Mn, Li, Na, Ni, P, Rb, Si, Sn, Sr, Ti, Y, Zn, Zr,) in ppm  in biosubstrata (human hair)  for various gender and age groups of children and adults with  the laser elemental analyzer  LEA-S500 has been reported. Accuracy of the analysis results for various elements makes 10-15%.

 

   SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. hair fig2 LEA-S500

A hair lock of 50mg-100mg  is enough for carrying on the analysis. The minimum sample preparation consists in preliminary washing (according to the IAEA guidelines) and pasting of a lock of hair by specially selected means. The offered method allows to get the average results according to three measurements of the prepared sample within 15 minutes. The express method of analysis allows to study the evolution of elements concentration  of the examined human body within  small periods of time.

 

   SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. hair fig3 LEA-S500

The instrument calibration has been performed  using  the international certified reference  materials of Human Hair NCS DC 73347a  and NCS ZC 81002b  (the producer is the Chinese National Analytical Center of  iron and steel).  

 

The advantages of the offered method in comparison with other currently applied methods  for analysis of  biosubstrata are as follow:

  • express analysis with total time of analysis  of no more than 30 minutes, with sample preparation included (the most important advantage
  • there’s no need in a sample ashing (dry or wet) what excludes loss of time  and uncontrolled loss of volatile elements
  • there’s no need in use of special devices for sample preparation , ultrapure reagents and materials.

The offered technique possesses unique properties allowing of monitoring the temporal dynamics of accumulation of essential elements along a hair lock  in the process of growth.

Such kind of investigations  allow to judge about  an organism health state,  its metabolism, to determine deficiency of vital elements and make all necessary corrections in proper time in food  , to carry out a treatment complex, if required.

 SOL instruments: спектрометр, рамановский микроскоп, эмиссионный спектрометр. fig1 LEA-S500 315x435

Elemental analyzer LEA-S500 

 

Table.
Determinated elements, elements' minimum measurable mass fraction (ppm) in childs' and adults' hair.
                                                               






Element


Minimum measurable
mass fraction,
ppm


Measured mass fraction, ppm
Children   Adults
Boys girls  Men Women 
Age Age Age Age
8 13 2,5 14 35 60 30 55
1 Ag 0.05 0.1 0.1 0.2 0.1 0.1 0.045 0.15 0.05
2 Al 0.5 4 1.5 11 2 3 3 8 2
3 Ba 0.5 2 1 2 5 1.7 3.5 10 3
4 B 1 2.2 4 1 0.7 <1 9 2.4 0.6
5 Be 0.01 0.01 0.03 0.05 0.01 0.01 0.01 0.02 0.01
6 Ca 1 250 250 1500 3000 300 1000 2500 1300
7 Cr 0.2 <0.2 0.6 0.5 <0.2 0.3 0.5 0.6 0.4
8 Cu 1 15 12 25 22 7 11 20 26
9 Fe 1 32 10 40 18 18 50 50 23
10 F 10 25 20 20 30 20 21 10 25
11 K 0.1 70 40 56 30 20 60 100 50
12 Mg 1 64 34 120 110 50 100 120 100
13 Mn 0.2 0.2 <0.2 0.8 <0.2 0.3 0.3 3 <0.2
14 Li 0.01 0.02 0.01 0.03 0.015 0.013 0.02 0.04 0.02
15 Na 0.1 450 200 120 100 90 180 180 200
16 Ni 0.2 0.1 0.2 0.3 0.2 0.2 0.3 0.2 0.2
17 P 10 190 160 160 190 110 150 150 160
18 Rb 0.1 <0.1 0.1 <0.1 0.1 <0.1 <0.1 0.1 0.2
19 Si 1 47 60 90 100 70 130 200 150
20 Sn 0.2 0.3 0.2 1 0.2 0.1 0.8 0.2 0.4
21 Sr 0.5 5.6 3 5 6 5 5 8 5
22 Ti 1 4 5 6 2 9 7 10 8
23 Y 1 1.5 <1 1 1.3 1 1.1 1.1 1
24 Zn 10 70 100 260 200 100 85 150 120
25 Zr 1 0.9 1 0.7 0.6 0.6 1 0.5 0.5