Toxicity measurements in concentrated water samples - Rivm

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Narcotic mixture Pesticides Detergents 1,4-dichlorobenzene Hexachloroethane 1,3,5-trichlorobenzene 3,4-dichlorotoluene 1,2,3-trichlorobenzene 3-chloronitrobenzene 2,4-dichloroaniline 1,2,3,4-tetrachlorobenzene 3,4-dichloro-nitrobenzene 2,4,6-trichloroaniline Pentachlorobenzene Mevinphos Acetone eluates Lindane Diazinon m-parathion Fenchorphos Chlorfenvinphos Metoxuron Diuron Azinphosmethyl Linuron Triazophos Sodium dodecanebenzene sulfonate (LAS) Octaethylene glycol monotetradecyl ether Spa blauw Spa blauw + humic acid ARK water 0 20 40 60 80 100 % of nominal concentration Figure 3-10. Average recovery (±S.D.) in acetone eluates after XAD-extraction with spiked mineral water (‘Spa blauw’), spiked mineral water with humic acids (10 mg/l) added, and spiked natural surface water (from the Amsterdam-Rhine canal). Exceptions are mevinphos and metoxuron in the pesticides mixture. These pesticides show significantly lower recoveries in the acetone eluate of mineral water samples with humic acid and natural water samples than the mineral water samples. Recovery of mevinphos in mineral water with humic acids shows a recovery of 28 % of the nominal initial concentration, and 26 % of the spiked concentration in natural surface water, which is lower than recovery from untreated mineral water (60%). Metoxuron has a somewhat higher recovery of 46 % (mineral water + humic acid) and 51 % (natural surface water) compared to 63 % (mineral water). This indicates that there may be competition for adsorption sites between the substances and humic acids present in the water at this amount of XAD. RIVM Report 607013010 43
After KD-distillation the recovery of the narcotic and pesticide mixture was more or less the same for the three water types (Figure 3-11). The results of the procedure for the three treatments indicate that the presence of humic substances is not of great influence on the recovery for most of the narcotic and pesticide substances. Narcotic mixture Pesticides Detergents 1,4-dichlorobenzene Hexachloroethane 1,3,5-trichlorobenzene 3,4-dichlorotoluene 1,2,3-trichlorobenzene 3-chloronitrobenzene 2,4-dichloroaniline 1,2,3,4-tetrachlorobenzene 3,4-dichloro-nitrobenzene 2,4,6-trichloroaniline Pentachlorobenzene Water concentrates Mevinphos Lindane Diazinon m-parathion Fenchorphos Chlorfenvinphos Metoxuron Diuron Azinphosmethyl Linuron Triazophos Sodium dodecanebenzene sulfonate (LAS) Octaethylene glycol monotetradecyl ether 0 20 40 60 80 100 Spa blauw Spa blauw + humic acid ARK water % of nominal concentration Figure 3-11. Average recovery (±S.D.) in water concentrates after XAD-extraction with spiked mineral water (‘Spa blauw’), spiked mineral water with humic acids (10 mg/l) added, and spiked natural surface water (from the Amsterdam-Rhine Canal). 3.4.3 Influence of XAD/ water volume and extraction duration Struijs and Van de Kamp (2001) have investigated the influence of different XAD/ water volume ratios and the extraction duration on the depletion of substances from water. The motive to investigate these relations was to develop a less laborious and material consuming method. To be able to handle the 44 RIVM Report 607013010
Page 1 and 2: Report 607013010/2009 A.M. Durand e
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Page 9 and 10: 4 Toxicity testing 51 4.1 Choice of
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Page 17 and 18: De biologische methoden zijn gesele
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Page 49 and 50: The experiments with other chemical
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Page 55 and 56: Figure 4-2. Pseudokirchneriella sub
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In planning monitoring activities u
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their natural environment. However,
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98 RIVM Report 607013010
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Dekker T, Greve GD, Ter Laak TL, Bo
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Peeters ETHM (2001) Benthic macroin
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Willemsen A, Vaal MA, De Zwart D (1
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Substance type Substance CAS nr mol
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approach is that it ignores the pre
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RIVM National Institute for Public
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Toxicity measurements in concentrated water samples - Rivm

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