1 saxony-anhalt eu twinning ro 04/ib/en/09 state environmental protection agency wolfgang...

1 Saxony-Anhalt EU Twinning RO 04/IB/EN/09State Environmental Protection Agency Wolfgang Garche Bukarest 22.05.2007

National Reference Laboratory for Air Quality

Role and Tasks of the National Reference Laboratory for Air Quality

Co-operation with the Regional Calibration Laboratories

Dr. Wolfgang Garche

Saxony-Anhalt Environmental Protection AgencyDepartment Air Quality Monitoring, Information, Assessment



Article 3 of the Framework Directive 96/62/EC is the basis for the National Reference Laboratories (NRL) and obliges the Member States to nominate the competent bodies for the tasks mentioned:

Article 3: Implementation and responsibilities For the implementation of this Directive, the Member States shall designate at the appropriate levels the competent authorities and bodies responsible for: - Implementation of this Directive, - Assessment of ambient air quality, - Approval of the measuring devices (methods, equipment, networks, laboratories), - Ensuring accuracy of measurement by measuring devices and checking the maintenance of such accuracy by those devices, in particular by internal quality controls carried out in accordance, inter alia, with the requirements of European quality assurance standards, - Analysis of assessment methods, - Co-ordination on their territory of Community-wide quality assurance programmes organised by the Commission.



Role and tasks of the National Reference Laboratory

NEPA

NRL Shall be the competent authority for quality assurance of air pollutant measurements in Romania.

• Implementation of a quality management system in the laboratory

• Ensuring of traceability of the measurements at national level, by providing/certifying reference materials to networks

• Organising of intercomparisons/ round robin tests at national level

• Participation in European QA/QC programmes

• Exchange of information through the organisation of training sessions, workshops, conferences.



NRL also could be responsible for

the performance of special measurements which cannot be done by regional networks, like measurement of ozone precursors (2002/3/EC, annex VI) and the determination of Hg in ambient air (2004/107/EC, annex V).

organizing and/or performance of tests to demonstrate the equivalence of applied ambient air measurement methods with the reference methods (e.g. automatically PM10 measurement methods)

Role and tasks of the National Reference Laboratory

Possible further tasks:



Demands on the National Reference Laboratory

Quality management system according to EN ISO 17025 “General requirements for the competence of testing and calibration laboratories”

Needed technical equipment for - measurements - calibrations - production of test gases - data acquisition and

evaluation - etc.

Competent staff

Regular participation on round robin tests and intercomparisions organized by ERLAP



The methods mentioned below should be a part of the accreditation:

Measurement of NO and NO2 in accordance with EN 14211

Measurement SO2 in accordance with EN 14212

Measurement of O3 in accordance with EN 14625

Measurement of CO in accordance with EN 14626

Measurement of Benzene in accordance with EN 14662

Measurement of PM10 in accordance with EN 12342

Measurement of PM2,5 in accordance with EN 14907

Calibration methods for automatic analysers for gaseous air pollutions

Methods for the production of calibration gases with different concentrations

Methods for the certification of calibration gases and generators for calibration gases



The equipment mentioned below is needed:

Analysers for SO2, NO/NO2, O3, CO and Benzene

Automatic analysers for PM10 and PM2,5

Samplers for PM10 and PM2,5

Balance and a suitable balance room

PC controlled calibration gas system for quality assurance and intercomparison exercises

UV-photometer for Ozone

Zero air supply

Data acquisition and evaluation system

Certificated measurement devices for volume flows, pressure and temperature (traceable to national standards)

Permeation systems (recommended)



Co-operation between NRL and Regional Calibration Laboratories

Certification of the laboratory reference standards of the RCL (normally once a year).

Support in - implementation of new measuring methods, - fulfilment of the requirements of the EN-standards,

- set up of quality management systems in the RCL,- selection of appropriate instruments.

Organisation of round robin tests and comparison measurements for the RCL

Organisation of training sessions, workshops, conferences, etc.



Ensuring of Traceability- Certification of RCL-Standards

NRL traceable standards (traceable to national/international standards) should be available

NO/NOx-analyzer

calibration repeated measurements

“Certificate”concentration with specified

uncertainty

Traceable NRL-Standard RCL-Standard

After certification the RCL-Standard is also traceable to a national/ international standard!



Ensuring of Traceability

RCLNMI NRL

National standards

Reference standards

Laboratory reference standards

comparisonmeasurements

comparisonMeasurements/

certification

BIMP

transfer standards

com

paris

onm

easu

rem

ents

comparisons on international level

?

Currently own national standards are not available in Romania. Therefore it is recommended that the NRL purchase standards which are traceable to other European Standards.


National Reference Laboratory for Air QualityTraceability chain in ambient air pollution measurements

Laboratory reference standard

Reference analyser

Transferstandard

analyser on measuring site

measured values

Cal

ibra

tion

Cer

tifi

cati

on

Cal

ibra

tion

Reference standards NRL

Certification

The reference standards of the NRL have to be traceable to national/international standards

Air monitoring network

The measured values have to keep the requirements on uncertainty, laid down in the EU daughter directives.

Reference analyser NRL

Cal

ibra

tion



Round robin tests

NRL should organize periodical round robin tests and comparison measurements for the RCL of the air monitoring networks in Romania.

Calibration laboratories should be obligated to participate on round robin tests/ intercomparisons.

Each compound should checked at least at intervals of 3 years (e.g. 1. year: SO2 and CO

2. year: NO/NO2 and O33. year: BTX)

The default value for the concentrations offered in round robin tests should set by the NRL (traceable to the reference standards).

For the estimation of the results of round robin tests the z_score method is recommended.



Exchange of Information

NRL should be a centre of competence for ambient air pollution measurements

Regular trainings for the staff of regional networks and RCL

Workshops for the exchange of experiences

Auditing of the quality management systems of the regional networks and RCL



Many Thanks

for your Attention!

1 saxony-anhalt eu twinning ro 04/ib/en/09 state environmental protection agency wolfgang...

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