Beijing Puxi Universal TAS-986 Atomic Absorption Spectrophotometer

NegotiableUpdate on 09/19

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Nature of the Manufacturer: Producers

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Overview

The Beijing Puxi Universal TAS-986 Atomic Absorption Spectrophotometer is an analytical instrument for determining the content of inorganic chemical components, widely used in trace analysis and trace analysis of industrial and agricultural production such as environmental protection, medicine and health, metallurgy, geology, food, petrochemicals, etc The measurement principle is to use a hollow cathode element lamp light source to emit characteristic radiation light of the tested element, which is absorbed by the ground state atoms of the tested element in the sample vapor generated by the flame atomizer. The content of the tested element is calculated by measuring the amount of absorbed characteristic radiation light

Product Details

Beijing Puxi Universal TAS-986 Atomic Absorption SpectrophotometerAs an important means of determining trace metal elements, it has the advantages of high sensitivity, good accuracy, and fast analysis speed. It has been widely applied in various fields such as geology, metallurgy, materials, medicine, environment, and chemistry, and is now becoming a very important instrument analysis method.

Key Features:

The structural design of the integrated flame atomizer and graphite furnace atomizer achieves automatic switching between the flame and graphite furnace atomizers;

Adopting eight lamp rotating lamp frames, automatically selecting the position of each hollow cathode lamp element;

Deuterium lamp and self-priming buckle background technology enable accurate analysis results for complex sample testing;

Automatically set the position of the atomizer and gas flow rate to ensure analysis conditions; Automatic wavelength scanning, peak searching, and spectral bandwidth replacement.

Beijing Puxi Universal TAS-986 Atomic Absorption Spectrophotometerworking principle
The elements are heated and atomized in a pyrolytic graphite furnace, becoming ground state atomic vapor that selectively absorbs the characteristic radiation emitted by the hollow cathode lamp. Within a certain concentration range, its absorption intensity is directly proportional to the content of the measured element in the test solution. The quantitative relationship can be determined by the Lambert Beer law, A= -lg I/I o= -lgT = KCL ， In the formula, I represents the transmitted light intensity; I0 is the emitted light intensity; T is the transmittance; L is the optical path length through the atomizer, and the L value for each instrument is fixed; C is the concentration of the tested sample; So A=KC.
The device that uses the resonance radiation of the element to be tested and measures its absorbance through its atomic vapor is called an atomic absorption spectrophotometer. It has structural forms such as single beam, dual beam, dual channel, and multi-channel. Its basic structure includes a light source, an atomizer, an optical system, and a detection system. It is mainly used for the analysis of trace element impurities and has two main advantages: high sensitivity and good selectivity. Widely used for the analysis of trace elements in various gases, metal organic compounds, and metal alkoxides. However, measuring each element requires a corresponding hollow cathode lamp, which brings inconvenience to the detection work.

Performance indicators:

• Wavelength range: 190nm to 900nm;

Wavelength repeatability: ≤ 0.15nm;

Spectral bandwidth: five levels: 0.1nm, 0.2nm, 0.4nm, 1.0nm, 2.0nm;

Spectral bandwidth deviation: ± 0.02nm.