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Atomic Absorption Spectrophotometer (AAS)
Atomic Absorption Spectrophotometer (AAS)
Origin of place China
Model WFX210
Supplier A&E Labmed
Price
Hits 806
Updated 1/12/2018
  • Product Detail
  • Company Profile

FEATURES:

 

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 temperature is continuously adjustable between 2300-2950℃, which 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 is will not pollute the environment and is not harmful to human bodies.  It’s a break-through in flame AAS analysis.

 

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

  • Automatically controlled changeover of the integrated flame and graphite furnace atomizer featuring easy operation and time saving eliminates human labor.
  • A flame emission burner head can be installed to perform flame emission analysis to Alkali metals as K, Na etc.

 

Accurate fully automated control system

  • Automatic 6-lamp turret, automatic adjustment of lamp current and optimization of light beam position.
  • Automatic wavelength scanning and peak picking
  • Automatic spectral bandwidth changing
  • Automatic changeover between flame and graphite furnace operation,  automatic optimization of position parameters, automatic ignition and automatic gas flow setting

 

Reliable fully automatic graphite furnace analysis

  • 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%.
  • Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact.
  • Multi-function auto sampler 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.

 

Perfect safety protection measures

  • Alarm and automatic protection to fuel gas leakage, abnormal flow, insufficient air pressure and abnormal flame extinction in flame system;
  • Alarm and protection function to insufficient carrier gas and protective gas pressure, insufficient cooling water supply and over-heating in graphite furnace system.

 

Advanced and reliable electronic design

  • Adopting large-scale programmable logic array and Inter I2C bus technology
  • European type sockets and AMP adapters with high reliability to ensure long term reliability of the whole electronic system.

 

Easy and practical analysis software

  • Easy-to-use AAS analysis software is made under Windows operating system, realizing fast parameter setting and optimization.
  • Automatic sample dilution, automatic curve fitting, automatic sensitivity correction.
  • Automatic calculation of sample concentration (content), mean value, standard deviation and relative standard deviation calculation.
  • Multi-elements determination in sequence to the same sample.
  • Measured data and final results can be printed out and edited in Excel format.

 

Comparison

Characteristic Mass of Some Elements using rich oxygen air-C2H2 flame and other flame methods

Unit: ug/ml

Element

Wavelength (nm)

Rich oxygen 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

 

 

SPECIFICATIONS:

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

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 pulse wave.

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

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

Graphite Furnace

Temperature range

Room temperature~3000ºC

Heating rate

   2000℃/s

Graphite tube dimensions

28mm (L) x 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

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 determination of multi-elements in

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 Autosampler

Sample tray

capacity

55 sample vessels and 5 reagent vessels

Vessel material

Polypropylene

Vessel volume

3ml for sample vessel, 20ml for reagent vessel

Minimum sampling

volume

1μl

Repeatable sampling times

1~99 times

Sampling system

Accurate dual pump system, with 100μl and 1ml

injectors.

Characteristic Concentration and

Detection Limit

Air-C2H2 flame

Rich oxygen Air-C2H2 flame

Cu: Characteristic concentration ≤ 0.025 mg/L, Detection limit≤0.006mg/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

107×49×58cm, 140kg

Graphite furnace

42×42×46cm, 65kg

Autosampler

40×29×29cm, 15kg

 

Pls feel free to contact me via email:  dvp@aelabcn.com

 

 

 

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