Feature
1. Full reflection optical system, full band achromatic, automatic wavelength scanning, automatic peak search.
2. Deuterium lamp background reduction, self-absorption background reduction.
3. Uniquely designed all-titanium burner, stable combustion, fast thermal equilibrium speed.
4. Automatic adjustment of negative high voltage, lamp current, element lamp position to adjust energy at will, automatic gas leakage and flameout protection.
- 3 hollow cathode lamp holders. Automatic control system, can automatically scan wavelength.
- 1 element lamp is working, and the other two element lamps are preheated.
5. Graphite furnace heating: users can freely set the heating curve according to their needs.
6. Advanced graphite furnace constant power temperature control design: the temperature of the graphite tube is uniform, and the working temperature of the graphite tube maintains good dynamic stability to ensure the accuracy of the analysis.
Specification
| 1.Optical system |
| Wavelength range | 185nm—910nm auto scan |
| Grating groove | 1800 line/mm |
| Monochromator | Czerny-Turner type |
| Spectral bandwidth | 0.1、0.2、0.4、1.0、2.0nm, auto switch |
| Wavelength accuracy | ±0.10nm |
| Wavelength repeatability | 0.05nm |
| Baseline drift | Static: 0.002A/30min, dynamic: 0.006 A/30min |
| Detector | Wide spectral range PMT |
| Spectral resolution | Able to resolve the emission peaks of manganese HCL at 279.5nm and 279.8nm. The energy at the valley between the two peaks is below 20%. |
| 2.Light source system |
| Lamp holder | 3 lamp holders |
| Lamp power supply mode | 400Hz square wave pulse |
| Lamp current adjustment range | 2-10mA average current |
| 3. Atomization system |
| Flameless (graphite furnace) analysis method |
| Characteristic quantity (Cd) | <0.5x10-129 |
| Detection limit (Cd) | <0.4x10-129 |
| Precision | RSD<2% |
| Heating range | Room temperature~2800℃ |
| Heating method | Advanced longitudinal constant power graphite furnace heating method |
| Heating temperature control method | Safe and reliable high-precision constant power temperature control method |
| Heating method | Ramp heating, step heating, PID controlled high power heating, user-defined PID control curve heating |
| Temperature control accuracy | <1% |
| Background correction |
| Deuterium lamp background correction | >60 times@1Abs |
| Self-absorption background correction | >60 times@1Abs |
| Atomic Absorption Method with Hydride Generator |
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| 4. Flameless (graphite furnace) analysis method |
| Measurement method | Graphite furnace peak height method, graphite furnace peak area method |
| Background correction | Deuterium lamp background correction greater than 60 times, self-absorption deduction background greater than 60 times |
| Number of repeated measurements | 1-30 times, calculate the average value, give the standard deviation and relative standard deviation |
| Result printing | Print test data or final analysis report. Results can be exported to Excel worksheet |
| Software environment | Windows XP/Windows 7 operating system, Chinese professional software |
