NMHCs_GC_online_741-742-721 _Vielsalm
VOC72M
planned
▶ Description
Gas chromatograph operated at the observatory platform Vielsalm to perform online in-situ measurements of non-methane hydrocarbons (NMHCs).
▶ 🔧 Inlet System from 9999-01-01
| Operated in atmospheric simulation chamber | ✗ |
| Measurement height above ground | 3.0 m |
| Measurement height above building | 1.0 m |
| Distance from NOx inlet | 0.5 m |
| Distance from ozone inlet | 0.3 m |
| Inlet tube material | PTFE (Teflon) |
| Residence time | 3.0 s |
| Inlet line heating | ✓ |
| Inlet line temperature | 20.0 °C |
| Filter inlet material | PTFE (Teflon) |
| Lower mesh size | 5.0 µm |
| Upper mesh size | 5.0 µm |
▶ 💨 Sample from 9999-01-01
| Sample air flow | Vacuum sampling |
| Pump | |
| Air flow | 50.0 mL/min |
▶ 🧬 Compounds from 9999-01-01
▶ 🧪 Air Treatment during sampling from 9999-01-01
| Water removal | None |
| CO₂ removal | None |
| Oxidant removal | None |
| Particle removal | PTFE (Teflon) |
▶ 🌬️ Air Sampling from 9999-01-01
| Air sampling technique | Concentrating on adsorbents |
| Concentrating on adsorbents | |
| Adsorption material | carbopack |
▶ 💉 Injection from 9999-01-01
| Injection technique | Thermodesorption |
| Thermodesorption mode | by resistance |
| Injection split | Splitless |
▶ ⚗️ GC System from 2024-06-01
| Instrument manufacturer | Envea |
| Instrument model | ENVEA VOC72M |
| Instrument serial number | 741||742||721 |
| First column | |
| Length | 15.0 m |
| Material | Stainless steel |
| Film thickness | 1.0 µm |
| Inner diameter | 0.25 µm |
▶ 📡 Detection from 9999-01-01
| Detection method | Other |
| Kind of pump | PID |
| Detection system | |
▶ 📐 Calibration from 9999-01-01
▶ ✅ Data QA/QC
| Time series analysis of calibrations | ✗ |
| Time series analysis of compound ratios | ✗ |
| @VOC@ | ✗ |
▶ 📤 Data Submission
| Database | Submission interval |
|---|---|
| ACTRIS | – |