7800 Multi-element Atomic Absorption Spectrophotometer

The outstanding feature of this product is that multi-elements can be analysed simultaneously. It is very suitable for analysing multiple components in one sample. It uses similar analysis mode to that of ICP. It can greatly increase analysis efficiency and save sample volume. In addition to multi-element analysis, it can also analyse one single component, working in the same mode as a flame atomic absorption spectrophotometer.

Description

Main Features:

  • Simultaneously analyse 4-6 elements within one minute (similar speed to ICP).
  • Fast analysis, similar to the speed of ICP, test result of multiple components come out simultaneously by one sampling.
  • Freely combine the multiple elements according to the requirements of analysis.
  • Save sample volume for multiple components analysis.
  • Rapid change of gas flow, grating rotation, slit and hollow cathode lamps.
  • Unique optical design greatly increases the sensitivity in visible range.
  • Excellent mechanical and optical system plus outstanding software ensure the measurement accuracy.

Specifications

  • Wavelength range: 190-900nm
  • 6-lamp turret: 1 lamp working, and 3 lamps preheating
  • Wavelength repeatability: ±0.1nm
  • Wavelength accuracy: ±0.2nm whole range
  • Photometric range: 0-2.5Abs
  • Resolution: spectral bandwidth = 0.2nm, can separate Mn two lines (279.5nm and 279.8nm), valley/peak energy ratio<20%
  • Spectral bandwidth: 0.1, 0.2, 0.4, 0.7, 1.0, 2.0nm
  • Static baseline drift: ≤0.002ABS/30min (Cu)
  • Weight: 80kg
  • Dimension: 500*450*430mm
  • Grating: 1800lines/mm
  • D2 background correction: background signal =1Abs, correction capability ≥50 times self-reversal background correction.

Graphite Furnace

  • Graphite furnace atomization device is an electrothermal atomizer that increases the sensitivity of most metal elements from mg/L to μg/L
  • Advanced optical controlled temperature programming system, realize automatic full power heating at atomization stage.
  • Heating condition setup: drying, ashing, atomization and two heating modes.
  • Temperature range: ambient-3000℃
  • Temperature control mode: voltage feedback mode for drying and ashing, voltage or optical control feedback for atomization
  • Characteristic concentration: Cu<1.0×10-10g, Cd<1.0×10-12g

Auto Sampler

  • Automatic curving function: do not need manual set of calibration curves. Prepare a standard solution, then the sampler will automatically set the calibration curve and measure.
  • Intelligent residual removal function: do not need artificial judgement and operation. It will automatically tell whether there are residuals and remove residuals to eliminate cross-contamination.
  • Intelligent dilution function: fully automatic dilution. According to sample concentration, the instrument will automatically give dilution ratio, match to the best measurement area and automatically finish dilution and measurement. The whole process needs no manual intervention.
  • 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.
  • Quality control: intelligent analysis quality control technology, calibrate blank and quality control sample at regular intervals and monitor the precision of test results.

Hydride Generator

  • Essential analytical equipment for environmental monitoring, food hygiene, quality inspection, commodity inspection, and drinking water monitoring.
  • Highly automated: only one start key. Sampling, generating, measuring and cleaning will all be done by pressing the button.
  • Unique electrothermal quartz absorption tube: Small and exquisite device, heated quickly, convenient to install, with stabled temperature, more than 10 times lifetime than flame, free of gas consumption, analytical method can be rapidly changed once it is cooled down.
  • Adopt advanced flow injection technology. Sample reaction is more uniform. The stability is improved. RSD<2%
  • Measurement rate: 100times/hour
  • Single sampling volume: <2mL

Flame System

Item 5800 7800
Wavelength Range 190-900nm 190-900nm
Grating 1800lines/nm 1800lines/nm
Wavelength Repeatability ±0.1nm ±0.1nm
Wavelength Indication Error Whole range ±0.2nm Whole range ±0.2nm
Optical System Czerny-Turner system, integrated optical platform, fully sealed Czerny-Turner system, integrated optical platform, fully sealed optical system
Resolution Spectral bandwidth =0.2nm can separate Mn two lines (279.5nm and 279.8nm, valley/peak Spectral bandwidth =0.2nm can separate Mn two lines (279.5nm and 279.8nm, valley/peak energy ratio <20%
Spectral Bandwidth D2 (background signal =1Abs, background correction capability 0.1nm, 0.2nm, 0.4nm, 0.7nm, 1.0nm, 2.0nm
Static Baseline Drift Integrating structure of suspended internal and external ≤0.002ABS/30min (Cu)
Background Calibration Technology 4-lamp turret (4 lamps can be

preheated simultaneously)

D2 (background signal =1Abs, background correction capability ≥50 times
Instrument Design Integrating structure of suspended internal and external optical path Integrating structure of suspended internal and external optical path
Lamp Turret 4-lamp turret (4 lamps can be

preheated simultaneously)

6-lamp turret (6 lamps can be

preheated simultaneously)

Burner Head Air-acetylene burner head

(100mm, optional 50mm nitrous oxide-acetylene is available)

Air-acetylene burner head (100mm)
Nebulizer High-efficiency glass nebulizer High-efficiency glass nebulizer
Ignition Dynamic Baseline Drift ≤0.004ABS/30min(Cu) ≤0.004ABS/30min(Cu)
Characteristic Concentration (Cu) ≤0.025μg/ml/1%

(Absorbance>0.8ABS)

≤0.02μg/ml/1%

(Absorbance>0.8ABS)

Detection Limit Cu≤0.008ug/ml Cu≤0.004ug/ml
Repeatability (Cu) ≤0.5% ≤0.5%
Gas Flow Control Manual Auto
Ignition Method via buttons on the control panel PC control
Safety Protection Automatically cut off gas in case of low pressure, power failure, flame out, or burner mismatched Automatically cut off gas in case of low pressure, power failure, flame out, or burner mismatched
Background Calibration Technology SR and D2, correct 1A background. When background signal =1Abs, correction

capability ≥50 times

SR and D2, correct 1A background. When background signal =1Abs, correction capability ≥50 times
Dimension 700*550*530mm 700*550*530mm

 

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