The atomic absorption spectrophotometer is widely used in the analysis of major and trace elements in metallurgy, geology, mining, petroleum, light industry, agriculture, medicine, health, food and environmental monitoring.
Atomic Absorption Spectrophotometer Features:
Equipped with a complete software and hardware system, it is highly intelligent, easy to use and simple to operate, and meets the requirements of authority management, audit tracking and other requirements.
Working methods can be stored, eliminating the need to repeatedly set test conditions, streamlining the detection process, avoiding duplication of work, and greatly saving users' time and cost.
Fully automatic eight/four lamp position rotating lamp stand, automatic switching, free setting of work lamp/preheating lamp, automatic call of optimal analysis parameters and analysis conditions.
Total reflection optical system, full-band achromatic, automatic wavelength scanning, automatic peak search.
It has both deuterium lamp and self-priming background subtraction to meet the detection needs of complex matrix samples.
Longitudinal heating graphite furnace technology achieves uniform temperature of the graphite tube.
The graphite furnace atomization system has alarm functions for insufficient cooling water flow, insufficient argon gas pressure, excessive temperature of the graphite furnace, abnormal power supply temperature, poor contact in the installation of graphite tubes, and automatically cuts off the temperature rise program to ensure the safety of the operation and use process.
It can be used with an automatic sampler for safe and efficient analysis. The hanging installation is simple and easy to debug, maximizing the user's work efficiency.
Atomic Absorption Spectrophotometer Specifications:
| Model | SP-AA3624G | SP-AA3628G |
|---|
| Optical System | Optical System | Single Beam |
| Monochromator | Czerny-Turner type, focal lengths at 350mm |
| Grating | Grating 1800 lines/mm, scintillation wavelength 250nm |
| Spectral Bandwidth (nm) | 0.1, 0.2, 0.4, 0.7, 1.4, 2nm |
| Automated slit selection |
| Wavelength Range (nm) | 185-900nm |
| Wavelength Accuracy (nm) | 0.3 nm | 0.2nm |
| Wavelength Repeatability (nm) | ≤0.1nm |
| Spectral Bandwidth Deviation | ±0.02 nm |
| Lamp Stand | 4 | 8 |
| Element Lamp Type | Cd lamp(Standard accessory) |
| Other element lamp is optional accessory |
| Photometric Performance | Reading Mode | Transmittance, absorbance, concentration |
| Photometric Range | 0-125%, -0.1-3.00A |
| Static Baseline Drift (Cu) | ±0.004A/30min | ±0.003A/30min |
| Dynamic Baseline Drift (Cu) | ±0.006A/15min | ±0.005A/15min |
| Background Correction | Deuterium lamp≥ 40x (1Abs) | Deuterium lamp≥ 40x (1Abs), self-priming≥ 80x (1Abs) (optional) |
| Graphite Furnace | Characteristic Amount | Cd≤1.0pg,Cu≤22pg | Cd≤0.8pg,Cu≤20pg |
| Detection Limit | Cd≤1.5pg,Cu≤20pg | Cd≤1.0pg,Cu≤10pg |
| Repeatability（Cd） | RSD≤4% | RSD≤3% |
| Heating Range of Graphite Furnace | Room temperature-3000℃ |
| High Power Heating Range | 1500-3000℃ |
| Slope and Holding Time | 1s-255s |
| Heating Rate | Maximum heating rate 2000°C/s |
| Atomization Heating Mode | Light-controlled heating, Time-controlled heating, General heating |
| Protective Gas Flow Outside Pipe | 1 L/min |
| Protective Gas Flow Inside Pipe | 4-speed adjustable (0, 50, 200, 250ml/min flow) |
| Data Processing | Safety Protection | Cooling water flow, Protective gas pressure, Furnace body temperature, Power supply temperature, Graphite furnace installation alarm |
| Measuring Method | Graphite furnace method |
| Concentration Calculation Method | Standard curve method (6 linear/non-linear fitting methods), Standard addition method, Interpolation method |
| Repeat Measurement Times | 1-30 times. Calculate and give the average value of absorbance/concentration. standard deviation and relative standard deviation |
| Other | Report Printing | Parameter printing, Data result printing |
| Computer | External connect |
| Ambient Temp | 10℃-30℃ |
| Ambient Humidity | 40%-85% |
| Power Supply | 220V, 50/60Hz |
| External Size (WxDxH)(mm) | 830x650x560 |
| Shipping Size (WxDxH)(mm) | 1000x780x810 |
| N.W./G.W. (kg) | 110/130 |
| Standard Accessory | Software, Cd Hollow cathode lamp, Pipette |
| Optional Accessory | Computer, Printer, Autosampler, Recirculating cooling water system
|
What is an atomic absorption spectrophotometer
AAS is an analytical technique used to determine the amount of certain elements in a sample. It utilizes the principle that atoms (and ions) can absorb light at a specific unique wavelength. When this specific wavelength of light is provided, energy (light) is absorbed by the atoms. The electrons in the atom move from the ground state to the excited state. The amount of light absorbed is measured and the concentration of the element in the sample can be calculated.
How does atomic absorption spectrophotometer work
Atomic Absorption Spectrometry is studied using an atomic absorption spectrometer (AAS or AA spectrometer). Here is how it works:
The sample is introduced into a nebulizer.
The nebulizer vaporizes the sample and converts it into a gas of free atoms.
A light source emits light at wavelengths characteristic of the element under test.
A monochromator selects a specific wavelength of light to excite the atoms in the sample.
The light passes through the gas sample.
The atoms in the sample absorb the characteristic wavelength of light.
The detector measures the amount of light absorbed.
From the amount of light absorbed the concentration of the element in the sample can be calculated.
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