Atomic Absorption Spectrophotometer

Main Specification Wavelength range 190-900nm Wavelength accuracy ±0.25nm Resolution Two spectral lines of Mn at 279.5nm and 279.8nm can be separated with the spectral bandwidth of 0.2nm and valley peak energy ratio less than 30%. Baseline stability ≤0.004A/30min Background correction The D2 lamp background correction capability at 1A is better than 30 times. The S-H background correction capability at 1.8A is better than 30 times. (only for WFX-110A/120A) Hollow Cathode Lamps Lamp turret 6-lamp turret (WFX-110A/120A) 4-lamp turret (WFX-130A) Auto-alignment, fully automated scan and peak-picking. Lamp current adjustment Automatic adjustment and display. Wide pulse current: 0 25mA Narrow pulse current: 0 10mA Lamp power supply mode 400Hz square wave pulse; 100Hz narrow square wave pulse + 400Hz wide square wave pulse (WFX-110A/120A) Optical System Monochomator Single beam, Czerny-Turner design grating monochromator Grating 1800 l/mm Focal length 277mm Blazed wavelength 250nm Spectral bandwidth 0.1nm, 0.2nm, 0.4nm, 1.2mm, automatic change. Flame Atomizer Burner 10cm single slot all-titanium burner Spray chamber Corrosion resistant all-plastic spray chamber. Nebulizer High efficiency glass nebulizer with metal sleeve, sucking up rate: 6-7mL/min Emission burner Provided with WFX-110A/120A Graphite furnace Temperature range Room temperature 3000 Heating rate 2000/s Graphite tube dimensions 28mm(L)´8mm(OD) Characteristic mass Cd≤0.8×10-12g, Cu≤5×10-12g, Mo≤1×10-11g Precision Cd≤3%, Cu≤3%, Mo≤4% Detection and Data Processing System Detector R928 Photomultiplier with high sensitivity and wide spectral range. Software Windows operating system. Analytical method Working curve auto-fitting; standard addition method; automatic sensitivity correction; automatic calculation of concentration and content. Repeat times Maximum 20 times of repeat measurement, automatic calculation of mean value, standard deviation and relative standard deviation. Multi-task Functions Sequential measurement of multi-elements in one sample. Condition reading With model function Result printing Measurement data and final analytical report printout, editing with Excel. Standard RS-232 serial port communication Characteristic Concentration and Detection Limit Normal Air-C2H2 flame Cu: Characteristic concentration≤0.025mg/L, Detection limit≤0.006mg/L; Rich oxygen Air- C2H2 flame Ba: Characteristic concentration≤0.22mg/L Al: Characteristic concentration≤0.4mg/L (for WFX-110A) Function Expansion Hydride vapor generator can be connected for hydride analysis. Dimensions and Weights 1020(L)´490(W)´540(H)mm(main unit), unpacked 80Kg 420(L)´420(W)´460(H)mm(graphite furnace), unpacked 50Kg