NMHCs_GC_online_Medusa25_Taunus
▶ 📝 Notes
1. At the inlet, we have a insect protection fitting, which is 40 um mesh size. That's why I selected "stainless steel" at "inlet system" -> "filter material". Should I repeat this info further down in "Air treatment during sampling" -> "particle removal"? 2. Why do I need to fill in the exact same information about "adsorption temperature" and "desorption temperature" under "Air sampling" -> "Concentrating on adsorbents", respectively under "Injection"? 3. Zero gas generation is not applicable to our calibration procedure. Zero gas is only used for the Nafion dryer counterpurge. 4. What is meant with "linearity check frequency"? The Medusa had been tested once for non-linearities using a range of different sample volumes and a standard gas. 5. What is meant by "Time series analysis of calibrations"? We look at our calibration gas measurements in context of our QA/QC procedures using GCWerks.
▶ 💨 Sample from 9999-01-01
| Pump | |
| Pump model | [Referenz-ID: 893] |
| Kind of pump | Membrane |
| Pump manufacturer | [Referenz-ID: 576] |
| Air flow | 100.0 mL/min |
| Sample air flow select | Pumping |
▶ 🔧 Inlet System from 9999-01-01
| Residence time | 9.0 s |
| Lower mesh size | 0.0 µm |
| Upper mesh size | 40.0 µm |
| Inlet tube material | Other |
| Filter inlet material | Stainless steel |
| Distance from nox inlet | 5.0 m |
| Inlet line heating bool | ✗ |
| Distance from ozone inlet | 5.0 m |
| Inlet tube material if other | stainless steel |
| Measurement height above ground | 11.2 m |
| Distance from condensables inlet | 9.6 m |
| Measurement height above building | 4.5 m |
▶ ⚗️ GC System from 9999-01-01
| First column | |
| Length | 60.0 m |
| Material | GS GasPro |
| Film thickness | 0.0 µm |
| Inner diameter | 320.0 µm |
| Second column | |
| Length | 25.0 m |
| Material | PoraBond Q |
| Film thickness | 5.0 µm |
| Inner diameter | 320.0 µm |
| Instrument model | [Referenz-ID: 895] |
| Pre column select box | ✗ |
| Instrument manufacturer | [Referenz-ID: 547] |
| Instrument serial number | CN13513019 |
| Second column select box | ✓ |
▶ 📡 Detection from 9999-01-01
| Select | Mass spectrometry |
| Mass spectrometry | |
| Type | Quadropole |
| Tune freq | Monthly |
| Mass spectrometry model | [Referenz-ID: 896] |
| Mass spectrometry manufacturer | [Referenz-ID: 547] |
| Mass spectrometry serial number | US2226M041 |
▶ 🌬️ Air Sampling from 9999-01-01
| Sampling volume | 2.0 L |
| Sampling duration | 20.0 min |
| Sampling interval | 1.5 hours |
| Sampling system model | [Referenz-ID: 894] |
| Air sampling technique | Concentrating on adsorbents |
| Concentrating on adsorbents | |
| Adsorption material | Hayesep |
| Adsorption temperature | -160.0 degC |
| Desorption temperature | 110.0 degC |
| Sampling system manufacturer | [Referenz-ID: 583] |
| Sampling system serial number | ME101025-1 |
▶ 📐 Calibration from 9999-01-01
| Blank substraction | Applied |
| Zero gas generation | N/A |
| Calibration frequency | 3.0 hours |
| Number of repetitions | 1.0 |
| Zero gas blank frequency | 1.0 weeks |
| Linearity check frequency | 36.0 months |
Calibration Certificates (1)
▶ 🧪 Air Treatment from 9999-01-01
| Bool other | ✗ |
| Co2 removal | None |
| Water removal | Nafion |
▶ 📤 Data Submission
Databases
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▶ ✅ Data QA/QC
| Bool voc | ✗ |
| Bool other | ✓ |
| Bool ratios | ✗ |
| Select if other | QA/QC following AGAGE protocols using GCWerks software |
| Bool calibrations | ✓ |
▶ 📋 Measurement QA/QC
| Checklist | 1.0 weeks |
| Instrument log book | Electronic |
▶ 🧬 Compounds from 9999-01-01
| # | Name | Formula | ID |
|---|---|---|---|
| 1 | ethyne | – | 269 |
| 2 | ethane | – | 252 |
| 3 | propane | – | 361 |
| 4 | 2-methyl-propane | – | 164 |
| 5 | n-butane | – | 324 |
▶ 👤 Operators
| Operator | Level |
|---|---|
| User #24 | expert |
| User #23 | expert |