Elemental Analyzer Related Principles

Elemental analyzer is a photoelectric colorimetric analysis instrument. Light is an electromagnetic wave with a certain wavelength or frequency. If it is in accordance with the wavelength or frequency, if the wavelength or frequency is arranged in the range of 200-400nm, the light is called ultraviolet light; human eye An electromagnetic wave with a wavelength of 400-760 nm can be perceived as visible light.

White light is a mixture of various colors of light in a certain intensity ratio. If you let a beam of light pass through the prism and break it up into seven colors of light: red, orange, yellow, green, cyan, blue, and purple. The light of each color has a certain wavelength range, the wavelength of purple light is short, and the wavelength of red light is long, and light having only one wavelength is called monochromatic light. Many substances have a certain color. For example: potassium permanganate solution is purple, copper sulfate solution is blue and so on. There are also many compounds that do not have their own color, but can be added to produce a characteristic color when added with appropriate reagents, such as the determination of manganese, if the nitric acid-silver nitrate solution is dissolved in light yellow, close to colorless, after adding ammonium persulfate and solution Manganese reacts to produce red compounds. When manganese changes in solution, the color of the solution also changes. The higher the manganese, the darker the color, and the lighter the color.

The elemental analyzer uses a colorimetric method for color comparison of an element, and a colorimetric method is based on the method of measuring the selective absorption of light by a substance in a solution, and is currently widely used in a physical and chemical laboratory of a mechanical industry.

The elemental analyzer uses a quantitative standard substance to measure the absorbance, absorb absorbance through the same solution and the same ambient temperature, the higher the absorbance, the higher the content, the relationship between them is: standard content ÷ standard absorbance × sample absorbance = Sample content.