Innovative Technologies

Atomic Absorption Spectrophotometer (QXM-AS245)

Atomic Absorption Spectrophotometer (QXM-AS245)

The Atomic Absorption Spectrophotometer is fully PC controlled. It can be flexibly equipped with optional graphite furnace, auto sampler and hydride generator. Unique optical mechanical design, safe and convenient flame system, optional background correct.
Features
  • Fully PC-controlled with flexible configuration options: graphite furnace, autosampler, and hydride generator.

  • Total reflection optical system for superior signal-to-noise ratio.

  • Intelligent gas control module with comprehensive safety functions.

  • Advanced deuterium lamp and self-absorption background correction technology.

  • Automated instrument control and 360° rotatable lamp turret (up to 8 lamps).

  • High-performance atomizer and smart lift system.

  • Professional RG WIN AAS software with full automation under Windows environment.

Technical Specification

Optical Specifications

Parameter QXM-AS245 QXM-AS246 QXM-AS247 QXM-AS248
Optical System Single Beam Double Beam Double Beam Double Beam
Monochromator Czerny-Turner, 350mm focal length
Grating Holographic, 1800 lines/mm
Wavelength Range 190–900 nm
Slit Widths 0.1, 0.2, 0.4, 0.7, 1.4, 2.0 nm (auto selectable)
Wavelength Accuracy ±0.3 nm ±0.2 nm ±0.15 nm ±0.15 nm
Wavelength Repeatability ±0.1 nm ±0.1 nm ±0.05 nm ±0.05 nm
Lamp Turret 4-lamp (auto) 8-lamp (auto, 360° rotation)
Reading Modes T, A, C
Photometric Range 0–125%, -0.1–3.00A
Static Baseline Drift (Cu) ≤0.004A/30 min ≤0.003A/30 min ≤0.002A/30 min ≤0.002A/30 min
Dynamic Baseline Drift (Cu) ≤0.006A/15 min ≤0.005A/15 min ≤0.004A/15 min ≤0.004A/15 min
Background Correction Deuterium (D2); Self-absorption (select models)

Flame Characteristics

Parameter QXM-AS245 QXM-AS246 QXM-AS247 QXM-AS248
Characteristic Conc. (Cu) ≤0.04 µg/ml ≤0.035 µg/ml ≤0.035 µg/ml ≤0.035 µg/ml
Detection Limit (Cu) ≤0.008 µg/ml ≤0.006 µg/ml ≤0.004 µg/ml ≤0.004 µg/ml
Repeatability (Cu) RSD ≤1% RSD ≤0.6% RSD ≤0.5% RSD ≤0.5%
Acetylene Flow Control Auto 12-level
Air Assist Control Auto 4-level
Ignition Method PC-controlled
Detector UV-sensitive photomultiplier tube
Burner Head Titanium, 100mm (air/acetylene)
Nebulizer High-efficiency glass
Spray Chamber Corrosion-resistant
Safety Features Auto gas shutoff (low pressure, flameout, mismatched burner, power failure)

Graphite Furnace Characteristics

Parameter QXM-AS245 QXM-AS246 QXM-AS247
Characteristic Amount Cd ≤1 pg, Cu ≤22 pg Cd ≤0.8 pg, Cu ≤20 pg Cd ≤0.8 pg, Cu ≤20 pg
Detection Limit Cd ≤1.5 pg, Cu ≤20 pg Cd ≤1.0 pg, Cu ≤10 pg Cd ≤0.8 pg, Cu ≤5 pg
Repeatability (Cu) RSD ≤4% RSD ≤3% RSD ≤2.5%
Furnace Heating Range RT–3000℃
High Power Heating Range 1500–3000℃
Heating Rate Max 2000℃/s
Slope & Holding Time 1–255s
Atomization Modes Light-controlled, Time-controlled, General
Protective Gas Flow (Outer) 1 L/min
Protective Gas (Inner Pipe) Adjustable (0, 50, 200, 250 mL/min)
Safety Protections Water flow, gas pressure, furnace temp, power temp, installation alarm

Data Processing

  • Measurement Methods:
    Flame, Graphite Furnace, Hydride Generation, Flame Emission

  • Calculation Methods:
    Standard Curve (6 linear/non-linear options), Standard Addition, Interpolation

  • Repeat Measurements:
    1–30 times; calculates average, SD, RSD

  • Report Outputs:
    Parameter printing, data result printing


General Parameters

Parameter Value
Dimensions (W×D×H) 850 × 650 × 550 mm
Net Weight 95 kg
Ambient Temperature 10–35°C
Humidity ≤85%
Power Supply 110/220V, 50/60 Hz