Flame Graphite Furnace Atomic Absorption Spectrophotometer

What is Atomic Absorption Spectrophotometer?

Atomic absorption spectrometer(also known as atomic absorption spectrophotometer), analyzes metal elements according to the effect of atomic vapor in the ground state of substances on the absorption of characteristic radiation. It can determine trace or trace elements sensitively and reliably.

Atomic absorption spectrophotometer generally consists of four major parts:light source, sample atomizer(Flame atomizer /graphite furnace atomizer), monochromator and data processing system (including photoelectric converter and corresponding detection device).

What elements can be detected by atomic absorption spectrometer and detection method?

1.Atomic absorption flame method: atomic absorption flame method (air-acetylene) can detect PPM grade.

lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), rhodium (Rh), palladium (Pb), platinum (Pt), gold (Au), copper (Cu), silver (Ag), zinc (z η), Germanium (Ge), cadmium (d), indium (n), gallium (Ga), lead (Pb), arsenic (As), bismuth (B), selenium (Se), antimony (Sb), ruthenium (Ru), etc.

2.Atomic absorption hydride method:Atomic absorption hydride method can detect trace elements with low melting point (PPb level).

Determination: arsenic (As), selenium (se), antimony (Sb), bismuth (Bi), lead (Pb), tin (Sn), tellurium (Te), germanium (Ge), mercury (Hg), etc.

3.Atomic absorption graphite furnace method:The element detected by atomic absorption graphite furnace method has less sample injection and high sensitivity (PPb level).

Silver (Ag), aluminum (A), arsenic (As), gold (Au), barium (Ba), beryllium (Be), bismuth (B), calcium (Ca), cadmium (Cd), cerium (Ce), cobalt (Co), cesium (Cs), copper (Cu), dysprosium (Dy), erbium (Er), europium (Eu), iron (Fe), gallium (Ga), holmium (Ho), indium (hn), potassium (K), lanthanum (La), lithium (Li), magnesium (Mg), manganese (Mn), molybdenum (Mo), sodium (Na), nickel (Ni), platinum (Pt), osmium (Os), lead (Pb), palladium (Pd), praseodymium (Pr), hafnium (H), rubidium (Rb), rhodium (Ph), ruthenium (Ru), antimony (Sb), scandium (Sc), selenium (Se), samarium (Sm), tin (Sn), zirconium (zr), tellurium (Te), titanium (T), alum (V), zinc (Zn), silicon (si), etc

Features:

Easy to Use

Stack design of combined flame and graphite furnace makes the system compact, 10 seconds to complete flame/graphite furnace switch.

High-performance auto sampler improves laboratory efficiency

Flexible Configuration

The instrument can be Flame AAS only, graphite furnace AAS only, combined flame & graphite furnace AAS,

flame+graphite furnace+hydride generator+auto sampler,upgrading 8 lamp according to demand.

Flame Features:

• Compact and delicate appearance
• Convenient options of background correction method
• Unique optical design
• Perfect automation control is easily realized by using the software workstation
• Safe, reliable and convenient flame system
• Multifunctional software workstation

Graphite Furnace Features

• 6-lamp turret, multi-lamps can be preheated simultaneously
• 85 position auto sampler
• Max. heating speed: 3000℃/s; Working temperature of graphite furnace: room temperature-3000℃
• Compact design, fully automatic process control
• Self reversal and D2 background correction

Gas Control

Separate control of in-tube gas and external gas. During the analysis, keep the gas flowing outside the tube, cut off the gas in the tube at atomization stage, effectively protect graphite tube, maximize the tube’s lifetime, and gain high analysis sensitivity.

Visual System of Graphite Furnace

The national-initiative unique multimedia graphite furnace visual system can intuitively monitor the sample’s dynamic evolution during drying, ashing and residue burning process in the graphite tube. It enables convenient observation of the auto sampler’s capillary injection needle reaching the best

position and depth in the tube, as well as the position of the platform placed in the graphite tube. It ensures analysis precision and graphite tube’s lifetime.

Accessories:

Hydride Generator

1.Essential analytical equipment for environmental monitoring, food hygiene, quality inspection, commodity inspection, and drinking water monitoring

2.Highly automated: only one start key. Sampling, generating, measuring and cleaning will all be done by pressing the button.

3.Unique electrothermal quartz absorption tube: Small and exquisite device, heated quickly, convenient to install, with stabled temperature, more than 4.10 times lifetime than flame, free of gas consumption, analytical method can be rapidly changed once it is cooled down.

5.Adopt advanced flow injection technology. Sample reaction is more uniform. The stability is improved. RSD<2%

6.Measurement rate: 100times/hour

7.Single sampling volume: <2mL

Auto Sampler

1.Automatic curving function: do not need manual set of calibration curves. Prepare a standardsolution, then the sampler will automatically set the calibration curve and measure.

2.Intelligent residual removal function: do not need artificial judgement and operation. It willautomatically tell whether there are residuals and remove residuals to eliminate cross- contamination

3.Intelligent dilution function: fully automatic dilution. According to sample concentration, theinstrument will automatically give dilution ratio, match to the best measurement area, and automatically finish dilution and measurement. The whole process needs no manual intervention

4.In-tube visual system: monitor injection and drying process. All tiny subtleties of drying come into your view, enabling fast and accurate setup of ashing temperature

5.Quality control: intelligent analysis quality control technology, calibrate blank and quality controlsample at regular intervals and monitor the precision of test results

Specifications:

Item No.	7800
Wavelenth Range	190-900nm
Grating	1800lines/nm
Optical System	Czerny-Turner system,integrated optical platform, fully sealed optical system
Wavelength Repeatability	≤0.15nm
Wavelength Indication Error	≤±0.3nm
Resolution	Spectral bandwidth =0.2nm can separate Mn two lines (279.5nm and 279.8nm, valley/peak energy ratio <30%
Spectral Bandwidth	0.1nm, 0.2nm, 0.4nm, 0.7nm,1.0nm, 2.0nm
Static Baseline Drift	≤0.002ABS/30min(Cu)
Lamp Turret	6-lamp turret(6 lamps can be preheated simultaneously)
Flame System
Air/Acetylene burner head	100mm
Nitrous oxide /Acetylene burner head	50mm
Atomizer chamber	polypropylene coating
Atomizer	High-efficiency glass Atomizer
Ignition Dynamic Baseline Drift	≤0.004ABS/30min(Cu)
Characteristic Concentration(Cu)	≤0.02μg / ml / 1%
Detection Limit	Cu≤0.004ug/ml
Repeatability (Cu)	Cu≤0.5%；(Absorbance>0.8Abs)
Gas Flow Control	Auto
Ignition Method	PC control
Safety Protection	Automatically cut off gas in case of low pressure, power failure,flame out, or burner mismatched
Graphite Furnace System
Heating Method	Longitudinally
Internal Gas Flow	Automatic adjustment
Working Temperature	Ambient – 3000℃
Max. heating speed:	≥3000℃/s
Characteristic value	Cd≤1pg；Cu≤10pg
Precision RSD	Cd≤3%；Cu≤3%
Temperature Control Method	Power control for drying and ashing, optical control max. Power heating for atomization
Protection	Instantly stop heating and alarm in case of graphite furnace accidentally broken
Operation Software	Windows operation software
Dimension	280*550*450mm
Background Correction Method	SR and D2, correct 1A background. When background signal =1Abs, correction capability ≥50 times
Power supply	AC220V±22V 50Hz±1Hz
Dimension	700*550*530mm
Function expansion	8 lamp +Hydride system
Standard Accessories	6 lamps turret+1 lamp+Air compressor+ PC software