Atomic Absorption Spectrophotometer (WFX-110A)

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.

Hollow Cathode Lamps

Lamp turret

6-lamp turret, 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 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 automatic change.

Atomizer

Flame/Graphite

Flame & Graphite Furnace atomizer automatic changeover

Detection and Data Processing System

Detector

Photomultiplier with high sensitivity and wide spectral range.

Software

Ms-Windows 98/Me operating system

Analytical method

Working Curve Method (1st order and 2nd order fitting), Sensitivity auto-correction, Standard Addition Method.

Concentration

Auto-calculation of concentration and content

Repeatable measurement

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

Multi-task function

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.

Flame Analysis

Burner

10cm single slot all-titanium burner

Spray chamber

All-plastic spray chamber.

Nebulizer

High efficiency glass nebulizer with metal sleeve.

Position adjustment

Adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner.

Protection for gas system

Fuel gas leak protection, abnormal flame extinction alarm, air-pressure deficiency protection and explosion-proof device.

Flame ignition

Automatic

Characteristic Concentration and Detection Limit

Normal Air-C2H2 flame

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

Oxygen-rich Air-C2H2 flame

Ba: Characteristic concentration ≤ 0.22mg/L Al: Characteristic concentration ≤ 0.4mg/L

Hydride generation

Hg: detection limit≤0.5ug/L

Graphite Furnace Analysis

Temperature range

20~3000ºC

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

RSD≤4%

Safety protection

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

Power Supply

220V, 200W

Dimensions

1020 (L) × 492 (W) × 537 (H) mm (main unit)

420 (L) × 420 (W) × 460 (H) mm (graphite furnace)

Weight

Unpacked 80kg (main unit), 50kg (graphite furnace)