Application of AA-1800 Atomic Absorption Spectrometer
Key words: application of atomic absorption spectrometer; analysis instrument ; AA-1800 atomic absorption spectrometry has been widely used in various analytical fields, mainly in four aspects: theoretical research; elemental analysis; organic matter analysis; metal Chemical speciation analysis Application in theoretical research: Atomic absorption can be used as an experimental means of physical and physical chemistry to measure and study some basic properties of a substance. Electrothermal atomizers are easy to control the evaporation process and the atomization process, so there are many advantages to using it to determine some basic parameters. Some of the activation energy, elemental diffusion coefficient, dissociation energy, vibrator strength, broadening of the spectral line profile, solubility, vapor pressure, etc. of the elements leaving the body measured by the electrothermal atomizer. 2. Application in elemental analysis: Atomic absorption spectrometry, due to its high sensitivity, low interference, simple and rapid analysis method, is widely used in various fields such as industry, agriculture, biochemistry, geology, metallurgy, food, environmental protection, etc. Helium is one of the powerful tools for metal element analysis and is used as a standard analytical method in many areas. The characteristics of atomic absorption spectrometry determine its important position in geological and metallurgical analysis. It not only replaces many common wet chemical analyses, but also has the same status as X-ray fluorescence analysis and even neutron activation analysis. . At present, the atomic absorption method is used to determine more than 70 elements in geological samples, and most of them can achieve sufficient sensitivity and good precision. Analysis of various trace elements in steel, alloys and high-purity metals is now also mostly done by atomic absorption. Atomic absorption is becoming more widespread in food analysis. More than 20 elements in foods and beverages have satisfactory methods of atomic absorption analysis. Analysis of essential and hazardous elements in biochemical and clinical samples is now performed using atomic absorption. Literature reports on atomic absorption analysis of metal elements in petroleum products, ceramics, agricultural samples, pharmaceuticals and coatings have been increasing in recent years. Analysis of trace metal elements in environmental samples such as water and atmosphere has become one of the important areas of atomic absorption analysis. Certain non-metallic elements can be determined by indirect atomic absorption. 3. Application in organic matter analysis: A variety of organics can be determined by indirect methods. 8-hydroxyquinoline (Cu), alcohol (Cr), aldehyde (Ag), ester (Fe), phenol (Fe), biacetyl (Ni), citric acid (Cu), fatty amine (co) , amino acid (Cu), vitamin C (Ni), anthranilic acid (Co), remi seal (Cu), quinine formic acid (Zn), organic anhydride (Fe), benzylpenicillin (Cu), glucose (Ca ), various organic compounds such as epoxide hydrolase (PbO, halogen-containing organic compound (Ag), etc., are indirectly determined by stoichiometric reaction with the corresponding metal element. 4. Application in metal chemical speciation: By gas chromatography and liquid chromatography and then by atomic absorption spectroscopy, different organic compounds of the same metal element can be analyzed, such as five kinds of alkyl lead in gasoline, five kinds of alkyl lead in the atmosphere, alkyl selenium, alkyl Anthracene, alkyl tin, alkyl hydrazine in water, alkyl lead, alkyl group, alkyl mercury, organic chromium, alkyl lead in organisms, alkyl mercury, organic zinc, organic copper and other metal organic compounds Can be identified and determined by different types of spectral atomic absorption. Key words: application of atomic absorption spectrometer; ; AA-1800
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