AAS Atomic Absorption Spectrometer Atomic Spectrophotometer
I.Product Introduction
The functional atomic absorption spectrometer was jointly developed by multiple domestic industry experts and renowned professors from Tsinghua University
The flame atomic absorption analysis method is mainly used and has multiple functions such as flow injection hydride atomic absorption method and graphite furnace atomic absorption method. It is a powerful tool
A physical and chemical analysis instrument with a higher cost performance ratio and more capabilities. Professor Wu Tingzhao and Professor Chen Lianyuan, who developed this instrument, have been engaged in the field of original instruments in China for many years
Experts in the sub absorption industry have experience in the development of various types of instruments, and they combine years of experience to integrate the elements of atomic absorption spectrometers
The sensitivity of the flame atomic absorption test has been improved to a new level, and the unique technology has made the sensitivity of flame atomic absorption reach an excellent level, that is: 1 μ G/ml/Cu
Absorbance ≥ 0.3 (sensitivity<0.015) μ G/ml/1% A).
II.The detection method and measurable trace elements of atomic absorption spectrometer (for reference only):
The atomic absorption flame method (air acetylene) can detect elements up to PPM level.
Sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), platinum
(Pt), gold (Au), copper (Cu), silver (Ag), zinc (Zn), cadmium (Cd), lead (Pb), bismuth (Bi), lithium (Li), etc.
III.Main features:
1.High performance lamp power supply: equipped with high-performance dual cathode
Power supply, the instrument is equipped with high-performance element lights that can be used internally(Dual cathode element lamp) circuit, avoid using external connections The current adapter brings unstable factors.
2.When adjusting the combustion support ratio of the flame atomizer, the equipment gas
The road box adopts a dual air flow control method, truly achieving
The flow control of gas and auxiliary gas has arrived. Due to many factors
The manufacturer only observes the auxiliary gas flow rate and relies solely on adjusting the gas flow rate The quantity cannot achieve the true regulation of combustion support ratio. special
Don't emphasize this more when making organic component samples
The reliability of some manufacturers, if they want to change the combustion airflow
The quantity can only be reduced by reducing the output pressure of the auxiliary gas, so
It brings a lot of unnecessary and tedious processes to the operation.
3.The monochromator adopts a sine mechanism with a clearance eliminating lead screw
Light, eliminate the phenomenon of empty return and return difference in the transmission mechanism,The wavelength scanning speed is faster.
4.Adopting multiple narrow slits, specially designed to be visible Special gear slots for high-temperature elements in the light area, avoiding To avoid some elements that cannot be detected or test results that cannot be obtained Damn it.
5.The control of the elemental light tower adopts dual synchronous wheels and dual
Synchronous belt technology improves accuracy and ensures smooth operation
Stable, precise, and reliable.
6.Core key components:
1) Photomultiplier tube: original Hamamatsu brand.
2) Grating: Developed by Changchun Institute of Optics and Mechanics, Chinese Academy of Sciences
Workstation Introduction
| FUNCTION |
illustrate |
| Metal element detection |
Can detect elements based on set elements, measurement time, delay time, etc Generate curves based on factors such as nutrient concentration and net absorption value. |
| Unknown sample detection |
Can detect the absorbance, concentration, relative deviation, etc. of unknown samples. |
| Reports |
Ability to generate elemental determination data reports, including detection conditions and standard samples Quality measurement results, standard working curves, unknown sample measurement results, etc. |
| Instrument calibration |
Can calibrate instruments based on selected lamp positions, negative high voltage, etc. |
| Chart drawing |
Ability to generate working curves by selecting fitting methods, concentrations, etc |
| Automatic peak finding |
Calculate the position based on the selected element and generate the corresponding wavelength. |
| Element light control |
Capable of selecting lamp positions, setting current and voltage, and setting preheating lamp positions. |
| automatic ignition |
Capable of controlling the device to ignite the combustion head. |
| Intelligent alarm |
Capable of detecting the furnace head temperature, gas pressure, and cooling water flow rate of graphite furnaces
Wait, when the data is abnormal, it will automatically alarm and stop heating. |
Technical Parameter
1. Working conditions
1.1 Power requirements: 220V (+5%~-10%), 50/60 Hz; 5000VA.
1.2 Environmental temperature:+15 ºC~+35 ºC.
1.3 Relative humidity: 20-80%.
2. Technical indicators
2.1 Spectral system
2.1.1 Grating lines: 1800 lines/mm.
2.1.2 Wavelength range: 190-900nm.
2.1.3 Spectral bandwidth: automatically adjustable in five levels of 0.1, 0.2, 0.4, 1.0, and 2.0nm.
2.1.4 Wavelength accuracy: ± 0.15nm, wavelength repeatability: ≤ 0.05nm.
2.1.5 Baseline drift: Static ≤ ± 0.002A/30 minutes, dynamic ≤ ± 0.004A/30 minutes.
2.1.6 Light source: Six lamp positions, automatic switching turret, secondary limit control technology, automatic collimation.
2.1.7 High performance power supply: Equipped with two high-performance dual cathode power supplies.
2.2 Flame atomizer
*2.2.1 Characteristic concentration (Cu): 0.015 μ G/mL/1%.
*2.2.2 Detection limit (Cu): 0.002 μ G/mL.
*2.2.3 Precision: RSD ≤ 0.5%.
2.2.4 Combustion head: Metal titanium combustion head.
2.2.5 spray: metal sheathed high-efficiency glass atomizer.
2.2.6 Atomization chamber: Explosion proof corrosion-resistant polymer material atomization chamber.
2.2.7 Adjustment system: Fully automatic PC control six light brick tower, automatic alignment and optimization, automatic ignition.
2.2.8 Safety protection: Equipped with automatic safety protection function, anti backfire automatic gas circuit protection, acetylene leakage alarm, automatic shutdown system, and the ability to Abnormal automatic power outage.
2.2.9 Background correction: Deuterium lamp background correction: Can correct 1A background.
2.3 Data processing
*2.3.1 Measurement methods: flame method, hydride method
2.3.2 Concentration calculation method: Standard curve method (1-3 degree curve), automatic fitting, standard addition method.
2.3.3 Number of repeated measurements: 1-99 times, calculate the average value, provide the standard deviation and relative standard deviation.
2.3.4 Result printing: parameter printing, data result printing, graphic printing, can export Word and Excel documents.
2.3.5 Full Chinese interface, simple and convenient to operate, can be operated through software to rotate the light position and automatically ignite.
*2.3.6 Communication interface: The computer communicates with the host via USB interface.
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