AA990F Atomic Absorption Spectrophotometer with Czerny-Turner Monochromator
The AA990F Atomic Absorption Spectrometer is a versatile entry level instrument with a computer controlled Air/Acetylene flame for general laboratory requirements. Due to its high sensitivity and excellent performance the instrument can be used for a wide range of applications
◆ Automatic function thanks for the easy-to-use software
– Automatic positioning and optimization of each hollow cathode lamp
– Control the fuel gas flows of the burner to optimize the best analytical parameters
– Control the Czerny – Turner Monochromator
– Locate the wavelength and select the peak
– Control the electronic parameters of the photomultiplier tube detector and hollow cathode lamp current
– Balance the absorbance and background energy
– Control the ignition of the flame
– Optimize the best heating program
◆ Integrated safety precautions for user protection by following:
– Flame Sensor
– Gas leak Sensor
– Drain Trap Sensor
– Power Loss Protection
◆ Precision accuracy with integrated correction system
◆ Life cycle value, best choice for less than 8 elements of analysis
The analysis of metallic elements is conducted based on the absorption of characteristic radiation by atomic vapor in its ground state. This method can sensitively and reliably determine trace or trace elements.
Elements are atomized by heating in a flame or a thermal decomposition graphite furnace, forming atomic vapor in its ground state. This vapor selectively absorbs the characteristic radiation emitted by a hollow cathode lamp. Within a certain concentration range, the absorption intensity is directly proportional to the content of the measured element in the test solution. The quantitative relationship can be described by the Lambert-Beer law, A = -log(I/Io) = -log(T) = KC, where I is the intensity of transmitted light, Io is the intensity of emitted light, T is the transmittance, L is the optical path length through the atomizer (which is fixed for each instrument), and C is the concentration of the sample being measured. Therefore, A = KC. The device used to measure the absorbance of atomic vapor through the resonance radiation of the element being measured is called an atomic absorption spectrophotometer. 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 elements and impurities, and has the two major advantages of high sensitivity and good selectivity. It is widely used in the analysis of trace elements in various gases, metal organic compounds, and metal alcohol salts.
1.Agricultural and environmental protection field: It can be applied in agriculture to complete the detection of food, seeds, vegetables, soil, pesticides, etc.
2.Life science field: For the detection of trace elements in human blood, urine, hair, and tissues
3.Commodity inspection, food inspection field: It is used for the control of industrial production process and the analysis of organic and intermediate products, such as the detection of cosmetics, meat, aquatic products, alcohol, oral liquid, tea and other products
4.Metallurgy: Detection of harmful elements or impurities in metals
5.Administrative agencies, Goverment：Applied to the detection of heavy metal elements in water plants, sewage treatment plants, power plants, judicial organs, etc.
6.Petrochemical: Process control of petrochemical production, finished product testing, etc.
7.Environmental testing field: Complete the detection of water quality, atmosphere, rainfall and soil according to national standards, and determine the content of pollutants
8.Geological exploration field: Applied to general investigation of geological mines, detailed inspection and abnormal evaluation.