Phthalates and Nonylphenols in Roskilde Fjord

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Table 16 Concentrations in fjord sediment, ng/g dm, mean and standard deviationLocation Station d, m n Stat NP NPDE DBP DPP BBP DEHP DnOP DnNPVig WWTP 210 26 mean 147 180 143 0.4 7.0 724 8.9 17sd 150 133 178 0.5 4.7 375 10.2 11Vig St 2 1883 2 mean 347 276 78 0.6 5.4 161 9.9 25sd 22 68 18 0.6 4.0 37 4.6 19Bredning St 2044 3981 2 mean 176 118 59 0 3.6 133 5.7 8.1sd 23 30 21 0 3.0 53 1.8 2.3Bredning St 60 6374 2 mean 149 23 46 0.8 4.4 52 1.8 1.7sd 45 32 6 0.5 0.3 5 0.7 2.4Isefjord Bramsnæs 2 mean 214 0 44 0 2.7 80 1.1 0.6sd 9 0 5 0 0.3 28 0.1 0.9Isefjord Tempelkrog 2 mean 49 0 43 2.0 4.6 21 2.4 2.4sd 9 0 4 0.5 2.0 12 0.2 0.2Total 36 mean 158 153 118 0.5 6 548 8 15sd 139 134 156 0.6 4 429 9 12d = distance from WWTP outletAs seen from Table 16, DEHP and DBP were the most abundant phthalatesin the fjord sediment. The mean of DEHP in Roskilde Vig was 724ng/g dm, but the individual concentrations ranged up to nearly 2000 ng/gdm. NP was found in higher concentrations than DBP, and in contrast tothe fjordwater, also NPDE was found, in concentrations almost identicalto those of NP.5.2.2 Horizontal distributionThe mean concentrations for all phthalates - with the exception of DPP -displayed a general decreasing tendency from the locations nearest to theWWTP outlet through station 2 and 2044 average 3 km away to the farthestlocation Station 60 6 km to the North. The concentrations at Station60 are comparable with the concentrations found in Isefjord, where thelowest concentrations are found in the inner part, Tempelkrog.The individual results for DEHP in sediments of Roskilde Fjord areshown in Figure 17 and for NP and NPDE in Figure 18 versus the distanceto the WWTP outlet. The point labels e, m and w refer to the East,middle and West positions, respectively, of the fan-shaped sampling layout(shown on map in Figure 2).40
Concentration, ng/g150010005000emmwweeemmwwbVigDEHPSt 2 St 2044BredningSt 60Depthcm-5000 1 2 3 4 5 6 7Distance from outlet, kmFigure 17 DEHP in sediments of Roskilde Fjord versus distance to WWTP outlet.600bBredning500VigConcentration, ng/g400300200100emwm wwem eeSt 2St 2044NPNPDESt 600Depthcm-100 -5000 1 2 3 4 5 6 7Distance from outlet, kmFigure 18 NP and NPDE in sediments of Roskilde Fjord versus distance to WWTP outlet.In Figure 17 an almost monotonous descending gradient is observed forDEHP. Thus, for the sediments a significant spatial variation can be seen,unlike the fjordwater, where no such gradient was found. An importantprocess going on is thus sedimentation of substances bound to particlesand binding of dissolved substances to sediment in the fjord bottom. It isseen that essentially all DEHP has been carried to the bottom within theshallow depths of the first few kilometres. Further away the concentra-41
Page 2 and 3: [Blank page]
Page 4 and 5: Data sheetTitle:Phthalates and Nony
Page 6 and 7: 6.2 Sources 646.3 Model parameters
Page 8 and 9: The physico-chemical processes in t
Page 10 and 11: De fysisk-kemiske processer i fjord
Page 13: 2 PurposeThe aim of the study has b
Page 16 and 17: In Table 3 the flow in the streams
Page 18 and 19: 3.3 Samples of fjord sedimentFinall
Page 21 and 22: 4 AnalyticalThe following substance
Page 23 and 24: 4.5 Standards and spikesThe labelle
Page 25 and 26: In Table 9 the results of the test
Page 27: The analysis was carried out as des
Page 30 and 31: 100Concentration ng/l90807060504030
Page 32 and 33: 400300DBP ng/l2001000JunJunSepDecMe
Page 34 and 35: 5.1.3 Monthly samples in Roskilde V
Page 36 and 37: 5.1.4 Analysis of varianceTo evalua
Page 38 and 39: Table 15 Correlations at Stations 2
Page 40 and 41: 500r = 0.86 (p=0.01)400DEHP ng/l al
Page 44: tion levels off, ultimately approac
Page 47 and 48: 200NPNPDEConcentration, ng/g d.m.15
Page 49 and 50: was observed in the flow direction
Page 51 and 52: 1000800meanConcentration, ng/g dw60
Page 53 and 54: NPDE and DEHP in the Hove Å system
Page 55 and 56: µg/m²/y000800600400200013-Nov27-N
Page 57 and 58: 6 Mathematical data interpretationI
Page 59 and 60: 6.1.2 Sorption and solvationIn the
Page 61 and 62: Different standard methods can be u
Page 63 and 64: Introducing the concentration of se
Page 65 and 66: substances migrate more rapidly tha
Page 67 and 68: • In 1969 in connection with work
Page 69 and 70: SeaDispersion modelBox-modelsIsefjo
Page 71 and 72: AtmosphericdepositionxdxN wx + ∂
Page 73 and 74: tWater gridxo• • •i+1 i i-1x
Page 75 and 76: 6.4.3 Dynamic solution to the diffu
Page 77 and 78: The two diffusion curves and the tw
Page 79 and 80: Fluxsedimentation /Fluxtotal1,00,90
Page 81 and 82: µg DEHP / sec10008006004002000-200
Page 83 and 84: 7 ConclusionsDEHP was the most abun
Page 85 and 86: 8 ReferencesBerger, W.H. & Heath, G
Page 87: Smith, R. (1986): Mixing and Disper
Page 90 and 91: NPNPDENPEPAEPFKPhthalatesdSIMSpikeS
Page 92 and 93:
dzD benzeneD DEHPVertical step in s
Page 94 and 95:
Ptt sedzαθ sProduct from bio-degr
Page 97 and 98:
12 Appendix A.Analytical performanc
Page 99 and 100:
4000NPDE3000Mean + - sdRegression l
Page 101 and 102:
300250DEHPMean + - sdRegression lin
Page 103 and 104:
and mass-spectrometrical characeris
Page 105 and 106:
1000800BBPMean + - sdRegression lin
Page 107 and 108:
National Environmental Research Ins
Page 109:
The aim of the study has been to in
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Phthalates and Nonylphenols in Roskilde Fjord

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