BNAAS-A3081G High Quality and Cheap Price AAS Atomic Absorption Spectrophotometer

Optical system

Wavelength range

190nm-900nm

Monochromator

C-T type of eliminating aberration monochromator

Dispersion elements

Plane diffraction grating,1800 lines/mm,indented area(40×40)mm²

Spectral bandwidth

0.1nm, 0.2nm, 0.4nm, 1.0nm, 2.0nm  for option

Wavelength precision

The whole waveband is better than ±0.15nm

Wavelength repeatability

The whole waveband is <0.10nm

Resolution

Copper lamp 324.7nm0.2nm and bandwidth deviation within ±0.015nm

Baseline drift

0.004A/30min

Element lamp holders

Four lamps can auto-switch without manual-adjustment

Detectors

High sensitivity, wide spectral range photomultiplier tube

Flame Atomization System (FAS)

Concentration(Cu)

0.02ug/ml/1%

LOQ  (Cu)

0.006ug/ml

Burner

100mm, single-slit titanium metal burner, which is air-cooled pre-mixed type

Precision

RSD≤0.8%

Sprayer

High efficiency glass sprayer

Atomization chamber

Corrosion-resistant plastic atomization chamber

Position adjustment

The auto-setting of flame burner height and position

Safety measures

Various of automatic safety protection function

Graphite Atomization System (GAS)

Characteristic statistic(Cd)

0.5×10^-12g

LOQ (Cd)

1.0×10^-12g

Precision

RSD≤1.5%

Heating range

Room temperature~3000℃

Heating operation methods

Power control method for dry ashing stage, max power light control for atomization stage

Temperature control precision

≤1%

Heating rate

>2000℃/sec.

Heating condition setting

Up to 11 programs, ramp heating , stage heating and max power heating

Safety protection

Functions of argon undervoltage instruction, waterflow discharge cooling, overheating or overflow alarm and auto-protection.

Background Subtraction

Back subtraction of deuterium lamp

1Ahour≥50times

Data processing

Measuring method

Air-acetylene flame method and atomic absorption method for hydride generator

Concentration calculate method

Standard curve method(1~3 times curve), standard mixing method

Repeat measuring times

1~20 times,repeatedly measure and calculate the average data and automatically get the standard deviation and relative deviation.

Result printed

Parameter printed, data results printed and exported to Excel, graphics printed and summary report.