Atom absorption method and apparatus for multi-element simultaneous determination

An atomic absorption, multi-element technology, applied in the field of measuring instruments, can solve the problem of not being able to measure multiple elements at the same time, and achieve the effects of high use efficiency, cost saving and space saving

Active Publication Date: 2009-07-15
BEIJING BOHUI INNOVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the technical deficiency of the existing technology that the number of multiple elements more than copper, zinc, calcium, magnesium, and iron can be simultaneously measured, an atomic absorption method and device for simultaneous determination of multiple elements are provided, which can simultaneously An atomic absorption method and device for the simultaneous determination of multiple elements with less spectral interference, high measurement accuracy, simple structure, and high reliability for the measurement of more elements

Method used

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  • Atom absorption method and apparatus for multi-element simultaneous determination
  • Atom absorption method and apparatus for multi-element simultaneous determination
  • Atom absorption method and apparatus for multi-element simultaneous determination

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Experimental program
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Embodiment 1

[0025] Embodiment 1: as figure 1 As shown, an atomic absorption device for simultaneous determination of multiple elements consists of a light source system device 50, optical path system devices 51, 53, atomizer 52, grating 54, beam grouping system device 55, photoelectric converter system device 56, and computer system 57 The above-mentioned light source system device 50 can be composed of 2 or 3 or 4 or 5 or 6 or 7 or 8 hollow cathode lamps and 1 or and 2 or and 3 or and 4 or and 5 or and 6 or and 7 or and 8 composite hollow cathode lamps. An optical path system device 51 is installed between the light source system device 50 and the atomizer 52, which is composed of a focusing mirror, a semi-transparent mirror and a reflector, and its installation position ensures that there is one or more beams and the atomizer 52 in the same position. Parallel direction, and one or more beams form an angle less than 90° with the atomizer. An optical path system device 53 is installed b...

Embodiment 2

[0026] Embodiment 2: as figure 2 , image 3 as shown,

[0027] Device for simultaneous measurement of 7 elements. The light source system device of the device includes a first compound radiation source 1 , a second compound radiation source 2 and a third compound radiation source 3 . The optical path system device has a half mirror 4, a first mirror 5, a first focusing mirror 6, a second focusing mirror 7, a third focusing mirror 9, a fourth focusing mirror 10, a second reflecting mirror 11, and a third reflecting mirror. Mirror 12 , first incident slit 13 , second incident slit 14 . The grating 15 of the atomizer 8 and the spectroscopic system is fixed on the structural support of the device, and the beam grouping system device has the first exit slit 16, the second exit slit 17, the third exit slit 18, the fourth exit slit Slit 19, fifth exit slit 20, combined reflector 21 with included angle, fourth reflector 22. The photoelectric converter system device has a first p...

Embodiment 3

[0032] Embodiment 3: an atomic absorption method for simultaneous determination of multiple elements; its steps are as follows:

[0033] Step 1: 7 radiation sources alternately emit multiple composite radiation beams containing the characteristic wavelengths of the elements to be measured, and the beams contain 7 characteristic wavelengths of the elements to be measured Zn, Fe, Mg, Na, Cu, K, and Ca;

[0034] Step 2: Pass the above-mentioned light beam through the atomizer parallel to the atomizer or at an angle α less than 90° to the parallel direction, and then enter the grating at an incident angle β less than 30° from the normal direction of the grating The light K1 sent by the first composite radiation source 1 passes through the first focusing mirror 6, the light K2 sent by the second composite radiation source 2 passes through the half mirror 4 and the second focusing mirror 7, and the third composite radiation source 3 sends out The light K3 passes through the first mi...

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Abstract

An atomic absorption device for simultaneous determination of multiple elements includes a light source system, an optical path system, an atomizer, a spectroscopic system, a beam grouping system, a photoelectric converter system, and a computer. The composite radiation beam; after passing the above-mentioned beam through the atomizer parallel to the atomizer or at an angle α less than 90° to the parallel direction, and then radiate it at an incident angle β less than 30° to the normal direction of the grating After being split by the grating, multiple beams containing the characteristic wavelength of a single element are regrouped and combined after passing through the beam grouping system. Each group of beam combinations uses the same optical path to alternately enter the multi-channel photodetector system for detection; and after data processing and The computer system calculates the concentration value of each element. In the invention, multiple single and compound radiation beams pass through the atomizer, and multiple elements are measured simultaneously. The light beams are emitted alternately, and there is no problem of spectral interference.

Description

technical field [0001] The invention relates to an atomic absorption method and device for simultaneous determination of multiple elements. It belongs to the field of measuring instruments. Background technique [0002] The principle of atomic absorption analysis is the resonant absorption of light radiation energy by free atoms in the ground state. The concentration of elements contained in the sample can be deduced by measuring the degree of absorption of light radiation energy by the atoms in the free ground state. The multi-element simultaneous determination technology is that the free atoms in the ground state resonate and absorb multiple optical radiation energies with different characteristic wavelengths at the same time, and measure the absorption degree of the free ground state atoms to the optical radiation energy with different characteristic wavelengths, so as to deduce the content of different elements in the sample. concentration. [0003] Chinese patent (01...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31
Inventor 杨奇
Owner BEIJING BOHUI INNOVATION TECH
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