Tungsten boat atomic absorption analysis method and device for simultaneously measuring multiple elements in multiple samples

An atomic absorption and analysis device technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as large limitations and technical limitations of instruments that cannot meet the requirements, and achieve the effects of reducing equipment costs, saving the number of detectors, and reducing the number

Active Publication Date: 2012-10-03
BEIJING BOHUI INNOVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above technical solution is that only one sample and one element in the sample can be measured at a time, which has great limitations
When it is necessary to measure multiple elements in a sample and a large number of samples need to be measured in a short time, the instrument cannot meet the requirements due to its technical limitations

Method used

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  • Tungsten boat atomic absorption analysis method and device for simultaneously measuring multiple elements in multiple samples
  • Tungsten boat atomic absorption analysis method and device for simultaneously measuring multiple elements in multiple samples
  • Tungsten boat atomic absorption analysis method and device for simultaneously measuring multiple elements in multiple samples

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A tungsten boat atomic absorption spectrometer for simultaneous measurement of two identical samples and three elements.

[0053] Its light source system 100 consists of a single-element hollow cathode lamp 1A (characteristic line λ 1 ) and a two-element composite hollow cathode lamp 2A (characteristic line λ 2 , lambda 3 ), the outgoing beams are denoted as K1A(λ 1 ) and K2A(λ2 , lambda 3 ); the optical path system 200 is composed of two lenses 3A, 4A, installed between the light source system and the tungsten boat atomizer system; the tungsten boat atomizer system 300 is composed of two tungsten boat atomizers 5A, 6A, arranged in parallel ; Optical path system 400 is made up of lens 7A, 8A and reflecting mirror 10A, 12A, is installed between tungsten boat atomizer system and spectroscopic system; The composition of spectroscopic system 700 comprises entrance slit 9A, 11A, grating 13A and exit slit 14A, 16A, 18A. The diffracted light is: K`1A(λ 1 ), K`2A(λ 2 ), ...

Embodiment 2

[0057] A tungsten boat atomic absorption spectrometer for simultaneous measurement of two different samples and two elements.

[0058] The device light source system 100 consists of 2 two-element composite hollow cathode lamps 1B (characteristic line λ 1 , lambda 2 ), 2B (characteristic line λ 1 , lambda 2 ), the outgoing beams are denoted as K1B(λ 1 , lambda 2 ) and K2B(λ 1 , lambda 2 ); the optical path system 200 is composed of two lenses 3B, 4B, installed between the light source system and the tungsten boat atomizer system; the tungsten boat atomizer system 300 is composed of two tungsten boat atomizers 5B, 6B, arranged in parallel ; Optical path system 400 is made up of lens 7B, 8B and half mirror 10B, reflecting mirror 11B, is installed between tungsten boat atomizer system and spectroscopic system; The composition of spectroscopic system 700 comprises incident slit 9B, grating 12B and Exit slits 15B, 13B. The diffracted light is: K`1B(λ 1 ), K`2B(λ 1 ) and K`...

Embodiment 3

[0062] A tungsten boat atomic absorption spectrometer for simultaneous measurement of 2 elements in 2 identical samples.

[0063] The light source system 100 of this device consists of 2 different single-element hollow cathode lamps 1C (characteristic line λ 1 ), 2C (characteristic line λ 2 ), the outgoing beams are denoted as K1C(λ 1 ) and K2C(λ 2 ); the optical path system 200 is composed of 2 lenses 3C, 4C, installed between the light source system and the tungsten boat atomizer system; the tungsten boat atomizer system 300 is composed of 2 tungsten boat atomizers 5C, 6C, arranged in parallel ; Optical path system 400 is made up of lens 7C, 8C and reflecting mirror 11C, half mirror 10C, is installed between tungsten boat atomizer system and spectroscopic system; The composition of spectroscopic system 700 comprises incident slit 9C, grating 12C and Exit slits 13C, 15C. The diffracted light is: K`1C(λ 1 ), K`2C(λ 2 ). The photoelectric conversion system 600 is compose...

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Abstract

The invention relates to a tungsten boat atomic absorption analysis method and device for simultaneously measuring multiple elements in multiple samples, belonging to the field of application of atomic absorption spectroscopy detection. The device is composed of a plurality of tungsten boat atomizers, and can be used for detecting multiple elements in one or multiple samples in one detection period. A light source is composed of a plurality of hollow cathode lamps and uses a characteristic spectral line. In the detection of incident light, the incident light penetrates through the corresponding tungsten boat atomizers by means of beam splitting, beam converging and time adjustment control. The sample heating atomization is carried out by orderly operating heating waveforms in an off-peak mode by using one or more tungsten boat atomizers. A grating beam splitting system is adopted as a monochromator. The signal detection is carried out by using a photoelectric converter, the photoelectric converter converts an optical signal into an electric signal, and the electric signal is computed by a computer system to obtain a sample concentration value. The method and the device can be usedfor quickly measuring multiple elements in multiple samples, and have the advantage of short detection time and element conservation; and spectral interference is avoided, and the requirement of the power supply for power is lowered.

Description

technical field [0001] The invention relates to a tungsten boat atomic absorption analysis method and device for simultaneous measurement of multiple samples and multiple elements within one detection cycle, which is used to measure trace elements in samples, and the samples mainly include human body fluids (blood, urine, semen) , emulsion), food, beverage, etc., the measurement method involves the application field of atomic absorption spectroscopy detection. Background technique [0002] Atomic absorption spectrophotometry is a method for determining the concentration of elements in a sample by measuring the absorption of radiation by the atomic vapor produced by the sample at the specific and unique wavelength of the element to be measured. It is based on heating the sample with a flame or flameless method in the atomizer, and the analyte elements in the sample generate ground state atomic vapor under the action of high temperature. The light source radiates the characte...

Claims

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Application Information

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