Atomic Absorption Spectrophotometer

Main Specification

Wavelength range

190-900nm

Wavelength accuracy

±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. (only for WFX-110A/120A)

Hollow Cathode

Lamps

Lamp turret

6-lamp turret (WFX-110A/120A)

4-lamp turret (WFX-130A)

Auto-alignment, 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

400Hz square wave pulse;

100Hz narrow square wave pulse + 400Hz wide square wave pulse (WFX-110A/120A)

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, automatic change.

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 with WFX-110A/120A

Graphite furnace

Temperature range

Room temperature ~ 3000

Heating rate

2000/s

Graphite tube dimensions

28mm(L)´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

Windows operating system.

Analytical method

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

Repeat times

Maximum 20 times of repeat measurement, automatic calculation of mean value, standard deviation and relative standard deviation.

Multi-task Functions

Sequential measurement of multi-elements in one sample.

Condition reading

With model function

Result printing

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

Standard RS-232 serial port communication

Characteristic

Concentration and

Detection Limit

Normal Air-C₂H₂ flame

Cu: Characteristic

concentration≤0.025mg/L, Detection limit≤0.006mg/L;

Rich oxygen Air- C₂H₂ flame

Ba: Characteristic

concentration≤0.22mg/L

Al: Characteristic

concentration≤0.4mg/L (for WFX-110A)

Function Expansion

Hydride vapor generator can be connected for hydride analysis.

Dimensions and

Weights

1020(L)´490(W)´540(H)mm(main unit), unpacked 80Kg

420(L)´420(W)´460(H)mm(graphite furnace), unpacked 50Kg