Flame/Graphite Furnace Atomic Absorption Spectrophotometer

Innovated rich oxygen air-acetylene flame analysis technique Integrated flame/graphite furnace atomization system

1 Innovated rich oxygen air-acetylene flame analysis technique(WFX-110A):  

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°C, 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.(WFX-110A/120A)

3 Accurate fully automated control system

3.1 Automatic multi-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 and automatic ignition

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

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

 

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.( 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	400Hz square wave pulse
		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)

Flame/Graphite Furnace Atomic Absorption Spectrophotometer