สเปกโตมิเตอร์ , absorbance , เสปกโตมิเตอร์ Model : WFX-210 Atomic Absorption Spectrophotometer

Innovated flame analysis technique

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

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Popular Czerny-Turner grating monochromator with 1800l/mm provides higher resolution.

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All plastic pre-mix spray chambers with high anti-corrosion ability.

Accurate and reliable graphite furnace analysis

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Light-controlled graphite furnace power supplier, adopting FUZZY-PID temperature control technique and dual curve working mode, ensures fast heating, accurate and stable temperature control and good temperature reproducibility. Temperature auto-correction function provided.

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

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High accuracy and reproducibility of the graphite furnace auto-sampler, realizing fully automation of graphite furnace analysis.

Fully automated control system

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Auto-changeover and position optimization of integrated flame/graphite furnace atomizer.

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Automatic 6-lamp turret. High performance HCL can be used directly, which features high intensity spectral line and low background.

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Auto-ignition, automatic spectral bandwidth selection.

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Fully automated wavelength scanning and peaking.

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Adopting mass flowmeter with program control ensures accurate gas intake volume.

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Automatic setting of Gas flow

Perfect safety protection measures

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Alarm and automatic safety protection to fuel gas leakage, air pressure deficiency and abnormal flame extinction

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Spray chamber made of explosion-proof material, all titanium burner and explosion-proof stopper for flame analyses. 

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Alarm and protection function to argon pressure deficiency, insufficient cooling water supply, over-heating and over-current ect. In graphite furnace analyses.

Advanced and reliable electronic design

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Adopting large-scale programmable logic array and Inter IC bus technique and highly reliable adapters for electric design.

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

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Standard RS-232 serial interface communication.

Easy and practical analysis software

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Easy-to-use AAS analysis software is made under Windows operating system.

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Automatic curve fitting, automatic sensitivity correction.

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Automatic calculation of sample concentration (content), mean value standard deviation and relative standard deviation calculation.

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Multi-elements determination in sequence to the same sample.

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

Element

Wavelength

Oxygen-rich air-C2H2 flame

N2O-C2H2 flame

Air-C2H2 flame

Ca

422.7

0.009

0.05

0.07

Yb

378.8

0.037

0.08

7.6

Eu

459.4

0.137

0.3

3.0

Al

309.3

0.4

0.7

Sr

460.7

0.016

0.1

0.15

Ba

553.5

0.1

0.4

10.0

Mo

313.3

0.15

0.4

0.8

W

255.1

3.2

5.0

Ga

287.4

0.4

1.0

1.3

Sm

429.7

2.92

8.5

La

550.1

37.2

35.0

Sn

224.6

0.8

3.0

50

Main Specification

Wavelength range

190-900nm

Wavelength accuracy

Better than ±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.

Light Source System

Lamp turret

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

Powered by two pulses (wide and narrow) simultaneously.  

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, 1.2nm, auto-switch over

Atomizer

Flame/Graphite Furnace

Flame & Graphite Furnace atomizer automatic changeover

Automatic graphite furnace position optimization, automatic flame height setting and horizontal position optimization.

Automatic gas flow setting, alarm and automatic protection function for gas leak, abnormal flow, air-pressure deficiency and abnormal flame extinction, automatic ignition.

Graphite Furnace Autosampler

Sample tray capacity

55 sample cups and 5 cups for matrix modifier

Material of the sample cup

Polypropylene

Volume of the standard cup

3ml for sample, 20ml for matrix modifier

Number of repeatable measurements

Up to 99 times

Sampling system

100ul and 5ml injectors, large flow sampling nozzle rinsing.

Sampling precision and repeatability

Precision: 1%; Repeatability: 0.3% for min. sampling volume.

Auto-correction

Sampling nozzle auto-correction, sample cup height auto correction.

Detection and Data Processing System

Detector

Photomultiplier with high sensitivity and wide spectral range.

Software

Windows 98/Me operating system

Analytical method

Working Curve Method (1st order and 2nd order fitting) with automatic sensitivity correction; Standard Addition Method.

Concentration

Auto-calculation of concentration and content

Repeatable measurement

Repeated measurement of up to 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 (Max. 6 elements).

Condition reading

With model function

Result printing

Measurement data and final analytical report printout, editing with Excel.

Flame Analysis

Burner

10cm single slot all-titanium burner   

Spray chamber

All-plastic spray chamber.

Nebulizer

High efficiency glass nebulizer with metal sleeve.

Characteristic Concentration and Detection Limit

Air-C2H2 flame

Oxygen-rich Air-C2H2 flame

Cu: Characteristic concentration≤0.025mg/L,

Detection limit≤0.006mg/L;

Ba: Characteristic concentration ≤ 0.22mg/L

Al:  Characteristic concentration ≤ 0.4mg/L

Graphite Furnace Analysis

Temperature range

Room temperature~3000ºC

Light-controlled temperature range

1500ºC -3000ºC, temperature auto-correction

Temperature control accuracy

≤1%

Heating rate

2000℃/s

Characteristic mass

Cd≤0.5 ×10-12g, Cu≤5 ×10-12g, Mo≤1×10-11g

Precision

Cd≤3%, Cu≤3%, Mo≤4%

Safety protection

Protections for over-heating, over-current, and less cooling water and argon pressure monitoring functions

Dimensions and Weight

Main unit

107X49X58cm, 140kg

Graphite furnace

42X42X46cm, 65kg

Autosampler

40X29X29cm, 15kg