storage of gas and dissolved gas samples for gc-irms ... · gc-irms measurement paul eby ....
TRANSCRIPT
![Page 1: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/1.jpg)
Storage of Gas and Dissolved Gas Samples for
GC-IRMS Measurement
Paul Eby
![Page 2: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/2.jpg)
Comparing Gas and Dissolved Gas Samples
![Page 3: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/3.jpg)
Comparing Gas and Dissolved Gas Samples
Sample d13C CH4 dD CH4vs VPDB vs VSMOW
A free gas -69.4 -318dissolved gas -58.1 -196
B free gas -68.5 -317dissolved gas -59.8 -209
C free gas -72.9 -328dissolved gas -52.1 -152
![Page 4: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/4.jpg)
Experimental Design: What Containers Work?
- Free Gas vs Dissolved Gas
- Bottles, Gas Bags, Canisters
- Different Types of Septa
- Affect of Piercing Septa
- Affect of Air Travel
- Sample Preservation
![Page 5: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/5.jpg)
Free Gas Containers
Steel Canister Exetainer BTEX Vial Wheaton Bottle
Tedlar Bag Foil Bag
![Page 6: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/6.jpg)
Dissolved Gas Containers
Steel Canister Exetainer BTEX Vial Wheaton Bottle
Tedlar Bag Foil Bag
![Page 7: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/7.jpg)
Septa for Crimp Top Bottles
1. Thick Butyl Rubber
2. PTFE Lined Butyl
3. Thin Butyl Rubber
4. Silicone Rubber
1 2 3 4
![Page 8: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/8.jpg)
Gas Mixture
Component % d13CMethane balance -42.4 ‰Ethane 5 -30.1
Propane 3 -33.1i-Butane 2 -30.2n-Butane 2 -33.5
CO2 5 -32.0- Free Gas & Dissolved Gas
- Various Containers and Septa
- Pierced Septa
- Time Series
- Air Travel
- Sample Preservation
![Page 9: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/9.jpg)
Free Gas - Canister
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 10: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/10.jpg)
Free Gas – Thick Butyl Septa
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 11: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/11.jpg)
Free Gas – Thin Butyl Septa
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 12: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/12.jpg)
Free Gas – Thin Butyl Septa (Pierced)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 13: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/13.jpg)
Free Gas – Exetainer (Pierced)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 14: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/14.jpg)
Free Gas – Tedlar Bag
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 15: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/15.jpg)
Free Gas – Foil Bag
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 16: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/16.jpg)
Free Gas – Silicone
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 17: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/17.jpg)
Free Gas – PTFE/butyl
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 18: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/18.jpg)
Free Gas – PTFE/butyl (Pierced)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 19: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/19.jpg)
Free Gas – BTEX (Pierced)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
transport 2weeks 1month 2months 3months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 20: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/20.jpg)
Free Gas – Summary
YES - Canisters
- Butyl Rubber Septa
- Foil Gas Bags (1 month only)
- Tedlar Gas Bags (1 month only, not CO2)
NO - Pierced Septa
- Silicone Rubber
- PTFE ?
![Page 21: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/21.jpg)
Dissolved – Thin Butyl Septa
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 22: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/22.jpg)
Dissolved Gas – Thick Butyl Septa
-5
-4
-3
-2
-1
0
1
2
3
4
5
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 23: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/23.jpg)
Dissolved Gas – Silicone
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 24: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/24.jpg)
Dissolved Gas – PTFE/butyl
-5
-4
-3
-2
-1
0
1
2
3
4
5
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 25: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/25.jpg)
Dissolved Gas – BTEX
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 26: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/26.jpg)
Dissolved Gas – Foil Bag
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 27: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/27.jpg)
Dissolved Gas – Tedlar Bag
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 28: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/28.jpg)
Dissolved Gas – Tedlar Bag (no preservative)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 29: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/29.jpg)
Dissolved Gas – No Preservative
Crud
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Dissolved Gas – Foil Bag (no preservative)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
start 2weeks 1month 2months
Δδ13
C (‰
) C1
CO2
C2
C3
iC4
nC4
![Page 31: Storage of Gas and Dissolved Gas Samples for GC-IRMS ... · GC-IRMS Measurement Paul Eby . Comparing Gas and Dissolved Gas Samples . Comparing Gas and Dissolved Gas Samples Sample](https://reader033.vdocuments.site/reader033/viewer/2022043001/5f7c9351e558fd03f81a13d2/html5/thumbnails/31.jpg)
Dissolved Gas – Summary
YES - Foil Gas Bags
- Tedlar Gas Bags (1 month only)
- Butyl Rubber Septa
- Preserve the samples
NO - Silicone Rubber
- PTFE