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| 
Payerne
-SO2-
| Observation |
| Category |
: |
Air sampling observation |
| Situation |
: |
ongoing |
| Time zone |
: |
Local time +1 |
| Sampling |
| Sampling height |
: |
|
| Description |
: |
continuous |
| Sampling and analysis frequency |
: |
1 minute |
| Sampling environment |
: |
|
| Description for sampling analysis |
: |
Air Intake: open-face, ambient |
| Instrument and Analysis |
| Measurement method |
: |
UV Fluorescence |
| Current status and history of instrument |
: |
UV Fluorescence |
| Description of instrument |
: |
Thermo Environmental Instruments Inc.
[1987-09-14 thru 1991-03-07] APSA 350E (HORIBA Ltd.);
[1991-03-07 thru 1991-05-30] ML 8850S (Monitor Labs);
[1991-05-30 thru 1993-04-14] ML 8850 (Monitor Labs);
[1993-04-14 thru 2000-06-28] ML 8850S (Monitor Labs);
[2000-06-28 thru 2009-06-30] TEI 43C TL (Thermo Environmental Instruments Inc.);
Since 2009-06-30 Thermo 43i TLE (Thermo Environmental Instruments Inc.)
|
| Calibration |
| Current scale employed in the measurement |
: |
NMI PRM BH10 (10ppm ± 0.1ppm)
|
| Measurement calibration |
: |
|
| Scale and calibration(treasability) |
: |
From 1993 until 07/1995: NIST SRM 1694a (100ppm ± 2ppm);
From 07/1995 until 08/2004: NIST SRM 1693a (50ppm ± 0.5ppm);
Since 08/2004: NMI PRM BH10 (10ppm ± 0.1ppm); NMI is equivalent to NIST (refer to the “Declaration of Equivalence“ between NMI und NIST)
|
| Data Processing |
| Measurement unit |
: |
ppbv |
| Data processing |
: |
Quality assurance procedures involve time series plots, consistency checks. All aggregate calculations based on 10-minute aggregates with greater than 75% availability |
| Processing for averaging |
: |
Processing for Daily Data:
Estimated standard uncertainty for daily aggregates:
[1990-01-01 thru 1991-03-07] 1 ppbv below 10 ppbv, 5 % otherwise;
[1991-03-07 thru 1999-01-01] 0.6 ppbv below 11.5 ppbv, 5 % otherwise;
[1999-01-01 thru 2008-01-01] 0.2 ppbv below 3.8 ppbv, 4.5 % otherwise;
[2008-01-01 thru 2009-01-01] uncertainty = [(0.0829ppb)^2+(0.0307*c)^2]^0.5;
[2009-01-01 thru 2010-01-01] uncertainty = [(0.1051ppb)^2+(0.0298*c)^2]^0.5;
[since 2010-01-01] uncertainty = [(0.1063ppb)^2+(0.0301*c)^2]^0.5
Processing for Monthly Data:
Estimated standard uncertainty for monthly aggregates:
[1987-09-14 thru 1990-01-01] 1 ppbv below 10 ppbv, 5 % otherwise;
Since 1 January 1990: No uncertainty is calculated. |
| Data flag |
: |
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| Data remarks |
: |
SD: If the SD is listed: Instead of the SD (standard deviation), the standard uncertainty is given.
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| Other Information |
| Scientific aim |
: |
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| Reference |
: |
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|
| submitted by Swiss Federal Laboratories for Materials Testing and Research |
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