Maximum Permissible Concentrations and Negligible Concentrations for aniline derivatives
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Series / Report no.
Open Access
Type
Report
Language
en
Date
1998-02-28
Research Projects
Organizational Units
Journal Issue
Title
Maximum Permissible Concentrations and Negligible
Concentrations for aniline derivatives
Translated Title
Maximaal Toelaatbaar Risiconiveaus en
Verwaarloosbaar Risiconiveaus voor anilinen
Published in
Abstract
In dit rapport zijn Maximaal Toelaatbare Risiconiveaus
(MTR's) en Verwaarloosbare Risicioniveaus (VR's) voor chloor-, nitro- en
methylgesubstitueerde anilines afgeleid. De keuze van stoffen is vooral
gebaseerd op hun voorkomen in het Nederlandse milieu. Anilines zijn de
afgelopen tien jaar regelmatig aangetoond in zoete oppervlaktewateren. Er
is geprobeerd zo veel mogelijk 'groep MTR's' af te leiden. Dit betekent dat
een waarde kan worden toegepast voor een groep van isomeren. Dit is gedaan
door de toxiciteitsdata van een groep van isomeren te combineren en
vervolgens een extrapolatie-methode toe te passen. Hiervoor is aangenomen
dat de isomeren hetzelfde werkingsmechanisme bezitten en dat de effecten
additief zijn, in het geval een organisme tegelijkertijd is blootgesteld aan
meer dan een isomeer. Een groep-MTR kan worden toegepast op de som van de
isomeren binnen een groep waarvoor een MTR is afgeleid. In het geval
meerdere isomeren tegelijkertijd zijn aangetoond in water, kan de som van de
concentraties worden gerelateerd aan de groep-MTR voor deze groep van
stoffen. De MTR's en VR's zijn vergeleken met recent gemeten concentraties
van het Rijksinstituut voor Integraal Zoetwaterbeheer en
Afvalwaterbehandeling (RIZA) en de Samenwerkende Rijn- en
Maaswaterleidingsbedijven (RIWA). Slechts een fractie van de behandelde
stoffen wordt regelmatig gemeten dan wel aangetoond. Recent gemeten
concentraties in 1995-96 in Nederlandse oppervlaktewateren blijken de in dit
rapport afgeleide MTR's niet te overschrijden. Data over gehaltes van
anilines in bodem en sediment zijn niet beschikbaar.
This report documents Maximum Permissible Concentrations (MPCs) and Negligible Concentrations (NCs) for chloro- (CAs), nitro- (NAs) and methylsubstituted anilines (MAs). Aniline derivatives have frequently been measured in Dutch surface waters during the last decade. In principle, MPCs are derived for the anilines measured in the environment. An attempt has been made to derive 'group MPCs' as much as possible. Group MPCs refers to MPCs which are derived for selected groups of isomers by combining all available toxicity data on a class of isomers and subsequently applying an extrapolation method. Here, it is assumed that isomers have the same mode of action and that the effects are considered additive when an organism is exposed simultaneously to more than one isomer. The MPC derived in this way can be subsequently used for the sum of the individual compounds included in a group concentration. The MPCs and NCs derived and documented in the report were compared to actual concentrations in Dutch surface waters using recent data from the Institute for Inland Water Management and Waste Water Treatment (RIZA) and the Association of Rhine and Meuse Water Supply Companies (RIWA). Only a fraction of the compounds considered were found to be regularly detected and measured in surface waters, and none of the actual concentrations measured during 1995/96 exceed the derived MPCwaters. Data on soil and sediment concentrations were not available.
This report documents Maximum Permissible Concentrations (MPCs) and Negligible Concentrations (NCs) for chloro- (CAs), nitro- (NAs) and methylsubstituted anilines (MAs). Aniline derivatives have frequently been measured in Dutch surface waters during the last decade. In principle, MPCs are derived for the anilines measured in the environment. An attempt has been made to derive 'group MPCs' as much as possible. Group MPCs refers to MPCs which are derived for selected groups of isomers by combining all available toxicity data on a class of isomers and subsequently applying an extrapolation method. Here, it is assumed that isomers have the same mode of action and that the effects are considered additive when an organism is exposed simultaneously to more than one isomer. The MPC derived in this way can be subsequently used for the sum of the individual compounds included in a group concentration. The MPCs and NCs derived and documented in the report were compared to actual concentrations in Dutch surface waters using recent data from the Institute for Inland Water Management and Waste Water Treatment (RIZA) and the Association of Rhine and Meuse Water Supply Companies (RIWA). Only a fraction of the compounds considered were found to be regularly detected and measured in surface waters, and none of the actual concentrations measured during 1995/96 exceed the derived MPCwaters. Data on soil and sediment concentrations were not available.
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