Onyx WFX-320 Atomic Absorption Spectrophotometer
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FEATURES
- High sensitivity, simple and safe operation, low analytical cost, ensured by the patented flame analysis technique (patent No. ZL9210560.7) adopting oxygen-rich air-acetylene flame as the substitution for nitrous oxide-acetylene flame for high temperature element analyses. The flame temperature of the oxygen-rich flame is adjustable continuously between 2300 and 2950°.
- Fully automated microcomputer controlled operation
1. Automatic wavelength peaking for quick and precise operation.
2. Automatic spectral bandwidth selection.
3. Automatic hollow cathode lamp changeover.
4. Automatic instrument parameter setting, including light source power supply, photomultiplier high voltage supply and background correction energy balance.
5. Automatic signal measurement and data processing. Fast sampling, photo-electric conversion, noise smoothing, integration, curve fitting, background correction and data display can all be done automatically.
- Easy and flexible WINDOWS operating system, with multi-windows processing technology to observe the signal profile, the measured results and the calibration curve at the same time. Various analytical programs, data, signals and graphics can all be stored for later use.
- Fully sealed optical system, keeping the optical elements clean and dry and ensuring long-term high-energy throughput.
- Optimum vibration-absorbing mechanism, ensuring good mechanical stability of the optical system, reducing vibration interference in graphite furnace operation.
- Two background correction systems, deuterium arc background correction system (with high performance deuterium arc lamp) and S-H background correction system (only for WFX-110/120) to realize background correction at all wavelengths.
- Perfect safety protection measures, alarm and automatic safety protection to fuel gas leakage, air pressure deficiency and abnormal flame extinction; spray chamber made of explosion-proof material, all-titanium burner and explosion-proof stopper for flame analyses; alarm and protection function to argon pressure deficiency, insufficient cooling water supply, over-heating and over-current etc. in graphite furnace analyses.
- Multi-analytical functions, providing flame AA, graphite furnace AA, and hydride AA analysis and flame emission analysis.
SPECIFICATIONS:
Main Specification
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Wavelength range
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190-900nm
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Wavelength accuracy
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±0.5nm |
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Resolution
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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%.
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Baseline stability
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0.005A/30min
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Background correction
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The D2 lamp background correction capability at 1A is better than 30 times.
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Light Source System
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Lamp number
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2 lamps (one preheating)
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Lamp current adjustment
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Micro-computer control
Adjustment range: 0~20mA
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Lamp power supply mode
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Powered by square pulses
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Optical System
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Monochomator
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Single beam, Czerny-Turner design grating monochromator
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Grating
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1800 l/mm
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Focal length
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277mm
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Blazed Wavelength
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250nm
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Spectral Bandwidth
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0.1nm, 0.2nm, 0.4nm, 1.2nm
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Detection and Data Processing System
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Detector
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Photomultiplier with high sensitivity and wide spectral range.
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Electronic and micro-computer system
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Light energy and negative high-voltage auto-balance
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Display mode
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LED display of energy and measurement values, concentration direct reading
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Read mode
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transient, integral, peak height, peak area.
Integral or sampling time is in the range of 0.1-19.9s.
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Scale expansion
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0.1~99
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Data processing mode
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Automatic calculation of mean, standard deviation and relative standard deviation. Repeating number is in the range of 1-99
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Measurement mode
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3~7 standards can be determined for curve fitting. Sensitivity correction available.
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Result printing
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Measurement data, working curve, signal profile and analytical conditions can all be printed out.
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Instrument self-check
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Check current status of each function key
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Flame Analysis
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Burner
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10cm single slot all-titanium burner
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Spray chamber
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All-plastic spray chamber.
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Nebulizer
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High efficiency glass nebulizer with metal sleeve.
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Position adjustment
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Adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner.
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Gas line protection
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Fuel gas leak alarm
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Characteristic Concentration and Detection Limit
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Air-C2H2 flame
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Cu: Characteristic concentration =0.025mg/L, Detection limit =0.006mg/L;
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Function Expansion
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Flameless analysis with WF-1C graphite furnace system available.
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Hydride vapor generator can be connected for hydride analysis.
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Dimensions and Weight
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1020x490x540 mm, 80kg unpacked
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