I. Application of ICP-900 Spectrometer
1. Classification of detectable objects:
Including: metals (steel, non-ferrous metals)
Chemistry, medicine, petroleum, resin, ceramics, etc.
Biology, medicine, food, etc.
Environment (tap water, environmental water, soil, atmospheric dust), etc.
2. Detection range
ICP atomic emission spectrometer is a large-scale analytical instrument that can determine the metal elements and some non-metal elements in the sample, and can perform qualitative, semi-quantitative and quantitative analysis of the sample. Its measurement range can be from trace to constant
3. The use cost of ICP spectrometer
The ICP atomic emission spectrometer needs to consume argon in use. The purity of argon that meets the requirements is 99.99%, and the consumption standard is about 12L/min.
II. Features of ICP-900 spectrometer
1. Fast analysis speed Analyze more than 20 elements in one minute
2. High precision, relative standard deviation RSD≤1.5%
3. Good stability, relative standard deviation RSD≤2.0%
4. Low detection limit μg∕L
5. There are many analysis elements. More than 70 elements can be quantitatively analyzed.
6. Convenient operation, the new Windows operating environment is fully functional
7. Fully automatic ignition reduces the difficulty of use, convenient and fast
8. Multiple safety protections. Low cooling water reminder protection, argon low value protection, arc extinguishing protection, triple protection, safer to use
III. Technical performance index
| 1. Radio Frequency Generator (RF): |
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| Circuit type | Inductance feedback self-excited oscillation circuit, automatic ignition, coaxial cable output matching and tuning, power feedback, closed-loop automatic control. | Working frequency | 40.68MHZ±0.05% |
| Frequency stability | <0.1% |
| Output power stability | 700－1600w |
| Output power stability | ≤0.3% |
| Electromagnetic field leakage intensity | 300mm from the fuselage |
| Electric field intensity E | <2V/m |
| 2. Sampling system: |
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| Output working coil inner diameter | 25mm，3 turns | Torch | Quartz torch tube with 20mm |
| Coaxial sprayer outer diameter | 6mm | double cylindrical fog outer diameter | 35mm |
| Argon gas flowmeter specifications and carrier gas pressure gauge specifications | Plasma gas flow meter（100-1000）L/h ；(1.6-16L/min) |
| Auxiliary gas flow meter（6-60）L/h ；(0.1-1L/min) |
| Carrier gas flow meter（6-60）L/h ；(0.1-1L/min) |
| Carrier gas regulator valve（0-0.4M Pa） |
| 3. Metering system: |
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| Photomultiplier tube specification | R212UH | Signal acquisition is V/F exchange | 1mV corresponds to 100Hz |
| Photomultiplier tube negative high voltage | 200-1000V | Photomultiplier tube current measurement range | 10-12 -10-4A |
| Stability<0.05% |
| 4. Spectroscopic system: |
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| Optical path | Czerny- Turner | Focal length | 1000mm |
| Grating specifications | Ion etched holographic gratings | Line density | 3600 lines/mm |
| Resolution | ≤0.008nm | Engraved line area | 80×110mm |
| Scanning wavelength range | 3600lines/mm | Wavelength range | 190-500 nm |
| Lens | ф30，1：1 imaging | Entrance slit | 20µm |
| Transmitter specifications | （78× 105 × 16）mm | Exit slit | 25µm |
| Stepper motor drive minimum step distance | 0.0006nm |
