Flammenatomabsorptionsspektrometer

Main Specification Wavelength range 190-900nm Wavelength accuracy ±0.5nm 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 ≤0.005A/30min Background correction The D2 lamp background correction capability at 1A is better than 30 times. Light Source System 2 lamps are powered simultaneously (one preheating). Lamp current adjustment range:0 20Ma. Lamp power supply mode Powered by 400Hz square pulse 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 4steps Adjustment Manual adjustment for wavelength and slit 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 Position adjustment Manual adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner. Gas line protection Fuel gas leakage alarm. Detection and Data Processing System Detector R928 Photomultiplier with high sensitivity and wide spectral range. Electronic and micro-computer system Automatic adjustment of light source power. Light energy and negative high-voltage auto-balance. Display mode LED display of energy and measurement values, concentration direct reading. Read mode Transient, time average, peak height, peak area. Integral time is selectable in the range of 0.1-19.9s. Scale expansion 0.1 99 Data processing mode Automatic calculation of mean, standard deviation and relative standard deviation. Repeating number is in the range of 1-99 Measurement mode Automatic curve fitting with 3 7standars; Sensitivity auto-corrrection. Result printing Measurement data, working curve, signal profile and analytical conditions can all be printed out. Instrument self-check Check current status of each function key. Characteristic Concentration and Detection Limit Air-C2H2 flame Cu: Characteristic concentration≤0.025mg/L, Detection limit≤0.006mg/L; Function Expansion Hydride vapor generator can be connected for hydride analysis. Dimensions and Weights 1020(L)´490(W)´540(H)mm, unpacked 80Kg