EN 15852:2010

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principle
6 Requirements
7 Reagents
8 Apparatus
9 Sampling considerations
10 Measurement procedure
11 Quality control
12 Calculation of results
13 Estimation of the measurement uncertainty method and
   performance criteria
14 Performance characteristics determined in field tests
15 Interferences
16 Reporting of results
Annex A (informative) - Sampling sites
Annex B (informative) - Manual method TGM
Annex C (informative) - Summary of field validation tests
Annex D (informative) - Characteristics of the mercury
        vapour source
Annex E (informative) - Calibration
Annex F (informative) - Assessment against target uncertainty
        by an individual laboratory
Annex G (informative) - Relationship between this European
        Standard and the Essential Requirements of EU
        Directives
Bibliography

This European Standard specifies a standard method for determining total gaseous mercury (TGM) in ambient air using cold vapour atomic absorption spectrometry (CVAAS), or cold vapour atomic fluorescence spectrometry (CVAFS). This European Standard is applicable to background sites that are in accordance with the requirements of Directive 2004/107/EC and to urban and industrial sites. The performance characteristics of the method have been determined in comparative field validation tests carried out at four European locations: two background and two industrial sites. The method was tested for two months at each site over a period of twelve months using automated equipment currently used in Europe for determination of TGM in ambient air. The working range of the method covers the range of ambient air concentrations from those found at background sites, typically less than 2 ng/m3, up to those found at industrial sites where higher concentrations are expected. A maximum daily average up to 300 ng/m3 was measured during the field trials. Results are reported as the average mass of TGM per volume of air at 293,15 K and 101,325 kPa, measured over a specified time period, in nanograms per cubic metre.