NMHCs_GC_online_xx_BRM
operational
🔬 gas chromatograph, online
▶ 📝 Notes
* There is a planned upgrade from Markes Unity 2 to Markes Unity including Markes Kori xr and Air server at the end of 2024. Updated parts and serialnumbers will be delivered once available. * Residence time from the inlet line to entry of sampling: 4.3s Abschätzung unter Annahme von 300 l/min, 35mm Innendurchmesser Ringleitung und 15m Leitungslänge [ s ] * oxidant removal: Thermo 49i Ozone Scrubber P/N 14697 * Sampling system model: Unity 2 w/ Airserver Xr and Kori Xr
▶ 💨 Sample from 2018-01-01
| Pump | |
| Kind of pump | Membrane |
| Pump manufacturer | [Referenz-ID: 576] |
| Air flow | 42.0 mL/min |
| Sample air flow select | Vacuum sampling |
▶ 🔧 Inlet System from 2018-01-01
| Line heating | 21.0 degC |
| Residence time | 7.94 s |
| Lower mesh size | 0.5 µm |
| Upper mesh size | 0.5 µm |
| Inlet tube material | Other |
| Filter inlet material | Other |
| Inlet filter if other | Stainless steel with silconert coating |
| Distance from nox inlet | 0.0 m |
| Inlet line heating bool | ✓ |
| Distance from ozone inlet | 0.0 m |
| Inlet tube material if other | (Ematal) anodized aluminum followed by a glas manifold, from there a PFA tubing is conencted to the sampler and GC FID. |
| Measurement height above ground | 5.0 m |
| Distance from condensables inlet | 0.0 m |
| Measurement height above building | 1.5 m |
▶ ⚗️ GC System from 2025-02-04
| First column | |
| Length | 30.0 m |
| Material | Agilent 15-4912 GS-OXYPLOT |
| Film thickness | 10.0 µm |
| Inner diameter | 530.0 µm |
| Second column | |
| Length | 50.0 m |
| Material | CP-AL2O3/Na2SO4 UltiMetal |
| Film thickness | 10.0 µm |
| Inner diameter | 530.0 µm |
| Instrument model | [Referenz-ID: 895] |
| Pre column select box | ✗ |
| Instrument manufacturer | [Referenz-ID: 547] |
| Instrument serial number | CN17373012 |
| Second column select box | ✓ |
▶ 📡 Detection from 2025-02-04
| Select | FID |
| System | |
| Detection model | [Referenz-ID: 895] |
| Detection manufacturer | [Referenz-ID: 547] |
| Detection serial number | CN17373012 |
▶ 🌬️ Air Sampling from 2018-01-01
| Sampling volume | 0.504 L |
| Sampling duration | 20.0 min |
| Sampling system model | [Referenz-ID: 901] |
| Air sampling technique | Concentrating on adsorbents |
| Concentrating on adsorbents | |
| Adsorption temperature | -30.0 degC |
| Desorption temperature | 280.0 degC |
| Sampling system manufacturer | [Referenz-ID: 583] |
| Sampling system serial number | GB00W50006 |
▶ 📐 Calibration from 2018-01-01
| Blank substraction | Applied |
| Zero gas generation | Catalyst |
| Calibration frequency | 1.0 months |
| Zero gas blank frequency | 1.0 months |
| Zero gas generation if catalyst | |
| Catalyst type | Parker TOC-1250-220 |
| Catalyst temperature | 300.0 degC |
Calibration Certificates (2)
Name:
NPL_NMHCs_2015_BRM
Supplier:
NPL
Cylinder:
D38 6648
Valid: 2015-12-11 → 2017-12-10
Name:
NPL_NMHCs_2024_BRM
Supplier:
NPL
Cylinder:
D217055
Valid: 2024-07-15 → 2029-07-14
▶ 🧪 Air Treatment from 2018-01-01
| Bool other | ✗ |
| Co2 removal | None |
| Water removal | Other |
| Particle removal | Other |
| Water removal if other | custom built -43°C coldfinger water trap |
| Particle removal if other | Silconert Swagelok 0.5um filter |
▶ 📤 Data Submission
Databases
|
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▶ ✅ Data QA/QC
| Bool voc | ✓ |
| Bool other | ✗ |
| Bool ratios | ✓ |
| Bool calibrations | ✓ |
▶ 📋 Measurement QA/QC
| Checklist | 2.0 weeks |
| Instrument log book | Electronic |
▶ 🧬 Compounds from 2018-01-01
| # | Name | Formula | ID |
|---|---|---|---|
| 1 | ethane | – | 252 |
| 2 | ethene | – | 255 |
| 3 | benzene | – | 225 |
| 4 | propane | – | 361 |
| 5 | propene | – | 363 |
| 6 | 2-methyl-propane | – | 164 |
| 7 | n-butane | – | 324 |
| 8 | ethyne | – | 269 |
| 9 | 2-methylbutane | – | 166 |
| 10 | n-pentane | – | 336 |
| 11 | isohexanes | – | 287 |
| 12 | n-hexane | – | 331 |
| 13 | isoprene | – | 288 |
| 14 | isoheptanes | – | 286 |
| 15 | benzene | – | 225 |
| 16 | toluene | – | 380 |
| 17 | ethylbenzene | – | 265 |
| 18 | m/p-xylenes | – | 299 |
| 19 | o-xylene | – | 349 |
| 20 | acetaldehyde | – | 206 |
| 21 | methanol | – | 303 |
| 22 | methyl ethyl ketone | C4H8O | 308 |
| 23 | ethanol | – | 253 |
▶ 👤 Operators
| Operator | Level |
|---|---|
| User #21 | expert |
| User #12 | scientist |
| User #29 | technician |