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    Room 1015,Beijing Research Institute of Meha-
    nical & Electrical Technology,No.18 Xueqing Road,
    Haidian District,
    Beijing,P.R. China 100083

    WFX-210 Atomic Absorption Spectrophotometer


    1 Innovated rich oxygen air-acetylene flame analysis technique:

    The patented flame analysis technique adopting rich oxygen air-acetylene flame as the substitution for nitrous oxide-acetylene flame for high temperature element analyses, such as Ca, Al, Ba, W, Mo, Ti, V, etc. Flame temeperature is continuously adjustable between 2300-2950 with makes it possible to choose the best atomization temperature for different elements. It features easy operation, low analysis cost and wide flame AAS analytical range. Rich oxygen flame will not pollute the environment and is not harmful to human bodies. It's break-through in flame AAS analysis

    2 Integrated flame/graphite furnace atomization system, changeable with flame emission burner

    2.1 Automatically controlled changeover of the integrated flame and graphite furnace atomizer featuring easy operation and time saving eliminates human labor

    2.2 A flame emission burner head can be installed to perform flame emission analysis to akali metais as K, Na etc.

    3 Accurate fully automated control system

    3.1 Automatic 6-lamp turret, automatic adjustment of lamp current and optimization of light beam position

    3.2 Automatic wavelength scanning and peak picking

    3.3 Automatic spectral bandwidth changing

    3.4 Automatic changeover between flame and graphite furnace operation, automatic optimization of position parameters, automatic ignition and automatic gas flow setting

    4 Reliable fully automatic graphite furnace analysis

    4.1 Adopting FUZZY-PID and dual curve mode light-controlled temperature control technique, temperature auto-correction technique, ensures fast heating, good temperature reproducibility and high analytical sensitivity. The temperature control accuracy is less than 1%

    4.2 Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact

    4.3 Multi-function autosampler features automatic standard sample preparation, automatic correction of sampling probe depth, automatic tracing and correction of liquid surface height in the sample vessel, with the sampling accuracy of 1% and reproducibility of 0.3%, realizing fully automation of graphite furnace analysis

    5 Perfect safety protection measures

    5.1 Alarm and automatic protection to fuel gas leakage, abnormal flow, insufficient air pressure and abnormal flame extinction in flame system

    5.2 Alarm and protection function to insufficient carrier gas and protective gas pressure, insufficient cooling wate supply and over-heating in graphite furnace system

    6 Advance and reliable electronic design

    6.1 Adopting large-scale programmable logic array and Inter I2C bus technology

    6.2 European type sockets and AMP adapters with high reliability to ensure long term reliability of the whole electronic system

    7 Easy and practical analysis software

    7.1 Easy-to-use AAS analysis software is made under Windows operating system, realizing fast parameter setting and optimization

    7.2 Automatic sample dilution, automatic curve fitting, automatic sensitivity correction

    7.3 Auotmatic calculation of sample concentration (content), mean value, standard deviation and relative standard deviation calculation

    7.4 Mutil-elements determination in sequence to the same sample

    7.5 Measured data and final results can be printed out and edited in Excel format


    Main Specification

    Wavelength range


    Wavelength accuracy

    Better than 0.25nm


    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


    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.

    Light Source System

    Lamp turret

    Motorized 6-lamp turret ( Two high performance HCLs can be mounted on the turret to increase the sensitivity in flame analysis.);

    Lamp current adjustment

    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

    Optical System


    Single beam, Czerny-Turner design grating monochromator


    1800 l/mm

    Focal length


    Blazed Wavelength


    Spectral Bandwidth

    0.1nm, 0.2nm, 0.4nm, 1.2nm, auto-switch over

    Flame Atomizer


    10cm single slot all-titanium burner

    Spray chamber

    Corrosion resistant all-plastic spray chamber


    High efficiency glass nebulizer with metal sleeve, sucking up rate:6-7ml/min

    Emission burner provided

    Graphite Furnace

    Temperature range

    Room temperature~3000ºC

    Heating rate


    Graphite tube dimensions


    Characteristic mass

    Cd0.5 10-12g, Cu5 10-12g, Mo110-11g


    Cd3%, Cu3%, Mo4%

    Detection and Data Processing System


    R928 Photomultiplier with high sensitivity and wide spectral range.


    Under Windows operating system

    Analytical method

    Working curve auto-fitting; standard addition method; automatic sensitivity correction, automatic calculation of concentration and content.

    Repeat times

    1-99 times, automatic calculation of mean value, standard deviation and relative standard deviation.

    Multi-task Functions

    Sequential measurement for multi-element determination to the same sample

    Condition reading

    With model function

    Result printing

    Measurement data and final analytical report printout, editing with Excel

    Standard RS-232 serial port communication

    Graphite Furnace Autosample

    Sample tray capacity

    55 sample vessels and 5 reagent vessels

    Vessel materia


    Vessel volume

    3ml for sample vessel, 20ml for reagent vessel

    Minimum sampling volume


    Repeatable sampling times

    1 -99 times

    Sampling system

    Accurate dual pump system, with 100l and 1ml injiectors

    Characteristic Concentration and Detection Limit

    Air-C2H2 flame

    Oxygen-rich Air-C2H2 flame

    Cu: Characteristic concentration0.025mg/L, Detection limit0.006mg/L;

    Ba:  Characteristic concentration 0.22mg/L

    Al:   Characteristic concentration 0.4mg/L

    Function Expansion

    Hydride vapor generator can be connected for hydride analysis

    Dimensions and weight

    Main unit

    1074958cm, 140kg

    Graphite furnace

    424246cm, 65kg


    402929cm, 15kg