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1
AMPS 5
Expert Group on
Analysis and Monitoring of Priority Substances
Georg Hanke, Jan Wollgast JRC IES IMW
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EU Enlargement
AMPS Candidate Country members:
Cyprus
Czech Republic
Slovenia
Slovak Republic
Poland
Estonia
Latvia
Lithuania
Hungary
Malta
Integration of Candidate Countries in European water monitoring schemes
Collaboration with CC in research for policy support,harmonisation, training
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Current method situation in water:
Identification of methods Lower Limit Of Application
LLOA
30 % EQS
Calculation of Method Applicability Factor MAF:
LLOA / 30 % EQS = MAF
MAF < 1 Method OK
MAF > 1 Method to be improved
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MAF < 1 Method OK
MAF 1-2 Method to be improved
MAF > 5 Method significantly to be improved
Method not existing
MAF evaluation
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Critical substances
MAF
Alachlor 5
Brominated diphenylethers 37
Chlorpyrifos (-ethyl, -methyl) 22
Pentachlorobenzene 10
Polyaromatic Hydrocarbons (PAH´s) 21
Tributyltin compounds 67
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No harmonised method for chloroalkanes available
State of the Art has been identified
Follow-up of Chloroalkanes workshop (CEN/UBA/JRC workshop) needed !
Identification of determinands still to be done !!!
MS activity ?
CEN activity?
DG ENV activity ?
DG ENV/DG RTD activity ?
Chloroalkanes, the way forward
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Identification of harmonised reference methods which are „fit for purpose“ in guidance document
EN methods and other, if appropriate
Guarantees availability of analytical method
Improves initial data quality
Gives basis for improvements
Platform for sharing new developed methods
To be done for Priority Substances, 76/464 substances, river basin specific substances
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All PS need a detailed description of the determinands !
Detailed description of EQS parameters should be included in legislational guidance !
Congeners, isomers
Examples:
PBDE, Chloroalkanes, HCHs, Nonylphenols, DDTs, PAHs, etc.
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Methods for whole water analysis
Checking compatibility of analytical methods with SPM content :
In most standard methods NO information about compatability with SPM present in the samples is given
Need for evaluation of methods by experts group !
Further method development should take SPM into account !
SPM can both interfere with the analysis and/or retain contaminants making them not accessible to extraction procedures !
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Standard methods for organic contaminants in water: « whole water » or fraction analysed ?
No mention of SPM36/50
No mention of SPM36/50
Mention of SPM14/50
Mention of SPM14/50
Defined protocol5/50
Defined protocol5/50
No defined protocol9/50
No defined protocol9/50
FILTRATION4 standard methods
• 6 PAHs (NFT 90-115) • diuron, isoproturon, atrazine, simazine (ISO11369)• nitro-aromatics (EPA8330)• di(2 ethylhexyl) phtalate
CENTRIFUGATION1 standard methodCENTRIFUGATION1 standard method
• COHV (EPA 9020B)
50 standard methods (ISO, EPA, AFNOR)
50 standard methods (ISO, EPA, AFNOR)
Only dissolved fraction !
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Methods for whole water analysis
Grouping of analytical methods:
Filtration/dissolved metal determination methods existing
Liquid/Liquid extraction contaminants embedded in particles might not be extracted
Headspace analysis (static + dynamic) considered uncritical but can be influenced by high SPM (TOC) content
SPE techniques depending on polarity of substances
Use of isotope dilution technique can partially improve applicability of methods for SPM containing samples
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Analytical Methods, the way forward:
Checking of available methods through expert judgement as first step
Identification and promotion of research needs
Continuous monitoring for need of improvement of methods for PS and river basin specific substances
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How to achieve and assure
an equal level of
good data quality for WFD
compliance checking
throughout Europe ?
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Data Quality Requirements
the combined standard uncertainty target value for single measurements of 25% (expressed as relative standard deviation) should be achieved at a concentration of 30 % of the EQS concentration level
A coverage factor of 2 (corresponding to an approximate level of confidence of 95%) is chosen to derive expanded uncertainty, this denotes that the target value for the expanded uncertainty is 50 %
Endorsed
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AMPS discussion document (page 23) :
Adequate QA/QC is fundamental to credibility and scientific value of monitoring under WFD
International criteria should form the basis of a harmonised approach
Need to make appropriate proficiency testing programmes and reference materials available was identified
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QA/QC for WFD PS
3 Pillars
Proof of competence by the MS laboratories
Proof of validation of the methods being used
Quality control on European scale
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Legally binding Data Quality Assurance and Quality Control:
Proposal of mechanism:
Identification of responsible bodies in MS
Accrediation and/or certification by national body
Participation in European proficiency testing scheme
AQC brainstorming Brussels, 29.3.04: Awareness of need for European Proficiency Testing Scheme for water analysis in European Commission and European Research Community !
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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, - coordination on their territory of Community-wide quality assurance programmes organized by the Commission.When they supply it to the Commission, the Member States shall make the information referred to in the first subparagraph available to the public.
Example: Air Framework Directive 96/62/EC
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Laboratories should work according to internationally accepted QA/QC schemes (e.g. following the accreditation standard EN/ISO/IEC 17025 and international guidelines)
ISO/TR 13530, 1997-09 Water quality – Guide to analytical quality control for water analysis.
Timmerman, J., Gardner, M.J. and Ravenscroft, J.E. (1996). UN/ECE Task Force on Monitoring and Assessment, Volume 4 - Quality Assurance. ISBN 9036945860.
Obligation for QA/QC within Member States laboratories: