r e 1 assessment of environmental risks of biocides - focus on emission scenarios eu course on...
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Assessment of environmental risks of biocides - focus on emission scenarios
EU course on Environmental Exposure Scenarios in Risk Assessment
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2Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EU Regulations and Directives
new chemicals EC Directive 67/548/EEC
existing chemicals EC Council Reg. 793/93
pesticides EC Directives 91/414/EEC
biocides EC Directive 98/8/EEC
veterinary drugs EC Regulation 2377/90
feed additives EC Directive 70/524/EEC
food additives 89/107/EEC
cosmetics SCP/803/90
packaging material EC Directive CS/PM/1025
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3Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Elements of ‘Chemicals Control’
• Data collection and exchange of information • Classification and labelling
• Risk assessment
• Risk management (a.o. authorisation)
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4Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
The EU Biocidal Products Directive (1998) Why ? : Risk Management !
Whereas 1: ‘.. 1993 .. Council .. need for risk management of non-agricultural pesticides ..’
How ? (1): Authorisation procedureWhereas 4: ‘.. rules for placing on the market .. taking as a condition a high level of protection for humans, animals and the environment ..’
How ? (2): Risk AssessmentWhereas 7, 8, 9, 11; Article 5; Annex VITGDs: data requirements, risk assessment of active substances, ...
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5Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Environmental Risk Assessment: Basic Framework
PEC/PNEC
Risk characterization
Data set
Data evaluation
Single speciestoxicity data
Extrapolation
PNEC
Effects assessment
Emissions
Distribution
PEC
Exposure assessment
EUSES
TGD
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6Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Life cycle Life cycle PRODUCTION
FORMULATION
SERVICE LIFE
PRIVATE USE INDUSTRIALUSE
In product In product Processingaid
WASTE DISPOSAL - Incineration - Landfilling - Recovery
Processingaid
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7Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
STP
GrasslandAgricultural
soil
Surfacewater
Sediment
Groundwater
AirDeposition
Leaching
Sedimentation
Dilution
Sludge applicationV
ola
tiliz
atio
nLocal emissions
Local emission and distribution routes
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8Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Indicative food chains
fish
PREDATORS SOILPOREWATER
SURFACEWATER
earthworm
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9Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Exposure assessment (results)
Protection target PEC
__________________________________________
micro-organisms STP effluent
aquatic organisms surface water
terrestrial organisms agricultural soil
sediment organisms sediment
predators fish or earthworms
__________________________________________
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10Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Effects assessment
• laboratory testing (single species; standardised test)
• various trophic levels
algae
+ +
crustacea fish
Aquatic ecosystem ?
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11Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
PNEC derivation (water)
Data Assessment factor
Short-term L(E)C50 from each of three trophic levels of 1000the base-set (fish, daphnia, algae)
One long-term NOEC (either fish or Daphnia) 100
Two long-term NOECs from species representing two 50trophic levels (fish and/or Daphnia and/or algae)
Long-term NOECs from at least three species representing 10three trophic levels (normally fish, Dapnia, algae)
Field data or model ecosystems case by case
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12Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EU TGD: importance of emission estimation
• The TGDs were to be revised, and to also incorporate aspects which are specific for risk assessment of biocides
• For biocides, the addition of specific emission and exposure scenarios had a high priority (Biocides TM, 1999)
why ?– uses are the most prominent difference with other
chemicals– emission has most significant influence on the final
outcome of risk assessment
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13Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Experience of initial vs. refined RAs
Uncertainty Factor__________________________________________
PNEC ± 10emission rates 10 - > 1000STP emission estimation < 10biodegradation in surface water < 10exposure assessment PEC 10 - > 10,000__________________________________________
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14Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EEmmiissssiioonnSSccee aarrii ssoonn
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15Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Definition of ESD
• An Environmental Emission Scenario Document is:
“A set of conditions about sources, pathways, production processes and use patterns that quantify the emissions (or releases) of a chemical from production, formulation, processing, private use (or use in the household) and recovery/disposal into water, air and solid waste”
(OECD 2000)
• In general, an ESD should cover all aspects of the life-cycle. An ESD may cover only some parts of the life-cycle, if remaining parts are not relevant or covered by another ESD.
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16Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Life Cycle & Risk AssessmentLife Cycle & Risk Assessment
PRODUCTION
FORMULATION
APPLICATION
SERVICE LIFE
WASTE
New &ExistingSubstances
BiocidalProductsDirective
Local &Local &RegionalRegionalScaleScale
LocalLocalScaleScale
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17Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Local scale Local scale (1 point source(1 point sourcefor each life for each life cycle stage)cycle stage)
ProcessNext stageNext stageof life cycleof life cycle
AIRAIR100 m100 m
WastewaterWastewaterSTPSTP
SOILSOIL
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18Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
PP
PP
FFFF FF
IIIIII IIII
II
II
II
IIII
II IIII
II
Regional scaleRegional scale(all sources(all sources all stages of l.c.)all stages of l.c.)
Production Production FormulationFormulation Industrial useIndustrial use
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19Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ProcessProcess
• Quantity of productQuantity of product
• Content in productContent in product
• Emission factor(s)Emission factor(s)
• Industrial categoryIndustrial category
• Function of substancesFunction of substances
Factors of ImportanceFactors of Importance
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20Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Concept of Emission EstimationConcept of Emission Estimation
ElementsElements::• Description of the industry or use area (‘process’)Description of the industry or use area (‘process’)• Description of the types of substances used and their Description of the types of substances used and their
function in the industry areafunction in the industry area• Identification of points of release and emission Identification of points of release and emission
factorsfactors• Information on the scale/size of operationsInformation on the scale/size of operations• Information on emission control measuresInformation on emission control measures• Instruction on how to use the information in ESD Instruction on how to use the information in ESD
and examples of calculationsand examples of calculations
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21Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Emission = Q * Fms * EF / Tem * 10Emission = Q * Fms * EF / Tem * 10-3 -3 (kg.d(kg.d-1-1))
Emission Scenario 1: Tonnage of SubstanceEmission Scenario 1: Tonnage of Substance
EFEF Emission factor (-)Emission factor (-) TemTem Number of emission days (d.yrNumber of emission days (d.yr-1-1))
Main SourceMain Source
TonnageTonnage
WaterWater AirAir
SoilSoil WasteWasteEmissionEmissionfactorsfactors
No. of daysNo. of days
INPUTINPUT:: QQ Tonnage (tonnes.yrTonnage (tonnes.yr-1-1)) FmsFms Fraction of the main source (-)Fraction of the main source (-)
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22Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Emission = Qp * Qs * EF Emission = Qp * Qs * EF (kg.d(kg.d-1-1))
Emission Scenario 2: Scale of ProcessEmission Scenario 2: Scale of Process
INPUTINPUT:: QpQp Tonnage of product (tonnes.dTonnage of product (tonnes.d-1-1)) QsQs Quantity of substance (kg.tonneQuantity of substance (kg.tonne-1-1 product) product) EFEF Emission factor (-)Emission factor (-)
Emission FactorEmission Factor
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23Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Emission Scenario 3: Average consumptionEmission Scenario 3: Average consumption
Emission = Qi * Ni * Fpc * Cs * EF Emission = Qi * Ni * Fpc * Cs * EF (kg.d(kg.d-1-1))
INPUTINPUT:: QiQi Consumption per inhabitant (l.dConsumption per inhabitant (l.d-1-1)) CsCs Content of the substance in product (kg.lContent of the substance in product (kg.l-1-1) ) FpcFpc Fraction of product with substance (-) Fraction of product with substance (-) EFEF Emission factor (-)Emission factor (-) NiNi Number of inhabitants (-)Number of inhabitants (-)
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24Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
New & Existing substances Biocides New & Existing substances Biocides
A Biocide is a new or existing substanceA Biocide is a new or existing substance butbut
a new or existing substance is not (always) a biocidea new or existing substance is not (always) a biocide
A Biocide has a specific function : A Biocide has a specific function : • DisinfectantDisinfectant• PreservativePreservative• Insecticide, acaricide, avicide, piscicide, . . . Insecticide, acaricide, avicide, piscicide, . . .
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25Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Biocidal Products Directive 98/8/EGBiocidal Products Directive 98/8/EGAnnex VAnnex V23 biocidal product types23 biocidal product types
Biocides Biocides (Use Category 39)(Use Category 39)
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26Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EU Biocidal Products DirectiveEU Biocidal Products Directive
23 Product Types divided over 4 Groups:23 Product Types divided over 4 Groups:
I I DISINFECTANTS & GENERAL BIOCIDESDISINFECTANTS & GENERAL BIOCIDES
IIII PRESERVATIVESPRESERVATIVES
IIIIII PEST CONTROL PRODUCTSPEST CONTROL PRODUCTS
IVIV OTHER BIOCIDESOTHER BIOCIDES
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27Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
11 Human hygiene biocidal productsHuman hygiene biocidal products
22 Private & public-health area disinfectantsPrivate & public-health area disinfectants
and other biocidal productsand other biocidal products
33 Veterinary hygiene biocidal productsVeterinary hygiene biocidal products
44 Food and feeding area disinfectantsFood and feeding area disinfectants
55 Drinking water disinfectantsDrinking water disinfectants
I I DISINFECTANTS & GENERAL BIOCIDESDISINFECTANTS & GENERAL BIOCIDES
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28Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
66 In-can preservativesIn-can preservatives77 Film preservativesFilm preservatives88 Wood preservativesWood preservatives99 Fibre, leather, rubber and polymerised Fibre, leather, rubber and polymerised
materials preservativesmaterials preservatives1010 Masonry preservativesMasonry preservatives1111 Preservatives for liquid cooling and Preservatives for liquid cooling and
processing systemsprocessing systems1212 SlimicidesSlimicides1313 Metalworking-fluid preservativesMetalworking-fluid preservatives
IIII PRESERVATIVESPRESERVATIVES
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29Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
1414 RodenticidesRodenticides
1515 AvicidesAvicides
1616 MolluscicidesMolluscicides
1717 PiscicidesPiscicides
1818 Insecticides, acaricides & products to Insecticides, acaricides & products to
control other arthropod speciescontrol other arthropod species
1919 Repellents and attractantsRepellents and attractants
IIIIII PEST CONTROL PRODUCTSPEST CONTROL PRODUCTS
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30Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
20 Preservatives for food or feedstocks20 Preservatives for food or feedstocks
2121 Antifouling productsAntifouling products
2222 Embalming and taxidermist fluidsEmbalming and taxidermist fluids
IVIV OTHER BIOCIDESOTHER BIOCIDES
2323 Control of other vertabratesControl of other vertabrates
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31Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Example 1 Example 1
Pt 1 : Human Hygiene Biocidal ProductsPt 1 : Human Hygiene Biocidal Products
PRODUCTION
FORMULATION
PRIVATE USE
SERVICE LIFE
WASTE
For example:For example:
• Deodorants, antiperspirantsDeodorants, antiperspirants
• Anti-dandruff shampooAnti-dandruff shampoo
• Antimicrobial soapAntimicrobial soap
Etc.Etc.
• Skin application Skin application
• Short Short term term
• BathingBathing
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32Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Example 1 Pt 1 : Human Hygiene Biocidal ProductsExample 1 Pt 1 : Human Hygiene Biocidal Products
Emission Scenarios of New & Existing SubstancesEmission Scenarios of New & Existing Substances
a) Tonnagea) Tonnage
b) Average consumption per inhabitantb) Average consumption per inhabitant
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33Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Example 2 Example 2
Pt 3 : Veterinary Hygiene Biocidal ProductsPt 3 : Veterinary Hygiene Biocidal Products
3.13.1 Disinfection of animal housingDisinfection of animal housing
3.23.2 Disinfection of footwear and animals’feetDisinfection of footwear and animals’feet
3.33.3 Disinfection of Disinfection of milk extraction systemsmilk extraction systems
3.43.4 Disinfection of Disinfection of means of transportmeans of transport
3.53.5 Disinfection of hatcheriesDisinfection of hatcheries
3.63.6 Disinfection of fishfarmsDisinfection of fishfarms
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34Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
PRODUCTION
FORMULATION
APPLICATION
SERVICE LIFE
WASTE
Example 2 Disinfection of animal housingExample 2 Disinfection of animal housing
“ ”
“ ”
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35Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Moment of Moment of manuringmanuring
Example 2 Disinfection of animal housingExample 2 Disinfection of animal housing
No. of cows No. of cows
Time Time
Maximum per haMaximum per ha
N / PN / P22OO55
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36Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
The EUBEES projects
• In 1999, a number of EU Member States, the
European Chemicals Bureau and the European
chemical industry (CEFIC), and supported by the
European Commission, set up the EUBEES
working group to develop environmental emission
scenarios for environmental risk assessment of
biocides in the framework of the Biocidal Products
Directive.
EUBEES
• EUBEES 1 project: January 2000 until June 2001• EUBEES 2 project: January 2002 until November 2003
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37Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EUBEES 1: Results (1)
• Report ‘Development of emission scenario documents for 23
product groups of the EU biocidal products directive 98/8/EG’,
INFU/UBA, D.
• ‘Emission scenario document for product type 2: private and
public health area disinfectants and other biocidal products
(sanitary and medical sector)’, RIVM, NL.
• ‘Emission scenario document for biocides used in paper coating
and finishing (product type 6,7&9)’, INERIS, F.
• ‘Emission scenario document for biocides used as preservatives
in the leather industry (product type 9)’, INERIS, F.
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38Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EUBEES 1: Results (2)
• ‘Emission scenario document for biocides used as preservatives
in the textile processing industry (product type 9&18)’, INERIS, F.
• ‘Emission scenario document for biocides used in taxidermist and
embalming processes (product type 22)’, INERIS, F.
• Report ‘Proposal for the formats of names, parameters, variables,
units and symbols to be used in emission scenario documents’ ,
RIVM, NL.
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39Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EUBEES 2: objectives and results (1)
1 Development of harmonised ESDs:
PT 11: preservatives liquid cooling & processing
PT 12: slimicides
PT 13: metal working fluid preservatives
[PT 21: antifouling products (in OECD)]
2 Check ESDs for existing substances on their suitability for
biocides:
PT 1: human hygiene biocidal products
PT 6: in-can preservatives
PT 7: film preservatives
PT 9: fibre, leather, rubber, polymerised material pres.
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40Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EUBEES 2: objectives and results (2)
3 Provide a framework for EU discussion and agreement of new
ESDs developed by the members, eg.:
PT 5: drinking water disinfectants
PT 10: masonry preservatives
PT 14: rodenticides
PT 18: insecticides (in stables and manure)
4 Test the scenarios for wood preservatives developed by OECD
and rodenticides developed by the Nordics in the framework of
EUBEES, primarily with regard to usability.
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41Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
OECD ESD on antifouling products
• Antifoulants: inhibit growth of organisms on ship hulls, fishing nets, marine structures. (several definitions!)
• Aim: OECD-wide harmonisation of available emission scenarios for anti-fouling applications.
• Most antifoulings, ie. 95% are used on ship hulls. Almost all available scenarios deal with the estimation of releases of antifoulings during the service life.
• The EESAF steering group will have its third meeting in November 2003. The draft ESD is intended to be finalised early 2004 and submitted to the OECD JM end 2004.
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42Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 1 (disinfectants)
• PT 01: Human hygiene biocidal products (RIVM, EUBEES2)
• PT 02: Private and public health area disinfectants– Medical equipment (EU)
– Accomodation (RIVM)
– Industrial areas – Swimming pools (RIVM)
– Air-conditioning – Chemical toilets – Wastewater treatment (RIVM)
– Hospital waste
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43Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 1 (disinfectants)
• PT 03: Veterinary hygiene biocidal products () (RIVM)
• PT 04: Food and feed area disinfectants
• PT 05: Drinking water disinfectants ( )
(UBA EUBEES 2 CA)
EUBEES
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44Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 2 (preservatives)
• PT 07: Film preservatives– Paints & coatings (PT 06) – Plastics (PT 09) – Glues & adhesives (RIVM)– Paper & cardboard (RIVM)
• PT 08: Wood preservatives (OECD)
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45Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 2 (preservatives)
• PT 09: Fibre, leather, rubber & polymer pres.– Textiles & fabrics (EU)– Leather & hides (EU)– Paper & cardboard (EU)– Rubber, polymers, etc.
• PT 10: Masonry preservatives () (EUBEES 2 CA)
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46Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 2 (preservatives)
• PT 11: Preservatives for liquid cooling & processing systems– Cooling systems () (EUBEES 2 CA)– Processing water & liquids
• PT 12: Slimicides– Paper & pulp () (EUBEES 2 TM)– Mineral oil extraction () (EUBEES 2 TM)
• PT 13: Metalworking-fluid preservatives () (EUBEES 2 CA)
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47Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 3 (pest control)
• PT 14: Rodenticides () (DK EUBEES 2 CA)
• PT 15: Avicides () (F EUBEES 2 TM)
• PT 16: Molluscicides
• PT 17: Piscicides
E = c pond
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48Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 3 (pest control)
• PT 18: Insecticides, acaricides and products to control other arthropods– Manure & stables () (RIVM)– Refuse dumps – Fumigants (RIVM)
• PT 19: Repellents and attractants
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49Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
ESDs for Main Group 4 (other products)
• PT 20: Preservatives for food & feedstocks
• PT 21: Antifouling products () ongoing
• PT 22: Embalming and taxidermist fluids (EU)• PT 23: Control of other vertebrates
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50Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
EU Risk Assessment TGD new version
• Harmonised Approach to Risk Assessment of
New Chem, Existing Chem and Biocides
• Harmonised Approach to Risk Assessment in the
Marine Environment (N.E.B. and OSPAR)
• Include in Guidance what has been learned in the
Existing and New Chemicals areas
• Include specific guidance for Biocides
(i.e. emission scenarios!)
• Reducing discussion time and disagreements
through increasing the extent of guidance
http://ecb.jrc.it > documents
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51Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Revised TGD (2003): relevant exposure assessment issues
• More complete life cycle assessment
• Release estimation – emissions from long-life articles– emissions from waste disposal including recovery
• Unintentional uses: calculation of background concentrations
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52Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Nice questions! (1)
• Should the waste stage be included in the exposure assessment of biocides?
• Yes, the BPD in principle covers also waste stage
• However the TGD (2003) and the OECD PT8 ESD do not contain models to quantify emissions from waste stage. Relevant assumptions would include (wood preservatives):– how much wood enters the waste stage– how much of that goes to landfill, resp. incineration– how much of the a.i. is still left in the wood– etc..
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53Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Nice questions! (2)
• How to use the new (TGD) long-life article emission scenario for wood preservatives and what is the relation to the OECD wood in service scenario?
• The TGD approach deals with constant emissions over a long time and relates to the regional scale.
• The OECD scenarios should be followed for wood preservatives. The scenario for wood in service has a different approach. The TGD scenario does not apply for wood preservatives.
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54Environmental risks of biocides | Peter van der Zandt & Paul van der Poel
Nice questions! (3)
• How should background concentrations and PEC regional be calculated for biocides? Which releases should be taken into account?
• Biocides emissions generally pertain to local emissions and result in calculations of PEC local.
• Background concentrations and PEC regional can therefore normally not be determined.