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Table 3 Chemical analytics of sediments from the main sampling sites concerning PAH, PCB and (heavy) metal contents, as well as the proportion of total organic carbon (TOC) exemplarily shown for the sampling event in winter/spring 2016

From: The importance of sediments in ecological quality assessment of stream headwaters: embryotoxicity along the Nidda River and its tributaries in Central Hesse, Germany

  Main sampling sites
N1 N2 N3 N4 N5 N6 H1 H2 H3 H4 U1 U2 U3 U4
Benz[a]anthracen (mg/kg) 0.150 0.104 0.163 0.170 0.065 0.175 0.026 0.106 0.061 0.043 0.315 0.174 0.222 < LOQ
Benzo[a]pyrene (mg/kg) 0.088 0.086 0.166 0.155 0.074 0.186 0.034 0.117 0.079 0.055 n.a 0.208 0.219 0.008
Fluoranthene (mg/kg) 0.370 0.232 0.369 n.a n.a n.a 0.084 0.263 0.119 0.087 0.712 0.431 0.749 0.009
Fluorene (mg/kg) 0.011 0.016 0.024 n.a 0.013 0.024 0.005 0.013 0.007 0.006 0.014 0.009 0.023 0.002
Phenanthrene (mg/kg) 0.134 0.111 0.222 n.a 0.099 0.289 0.062 0.142 0.067 0.042 0.188 0.122 0.349 0.009
Pyrene (mg/kg) 0.245 0.152 0.252 0.212 0.090 n.a 0.059 0.200 0.091 0.063 0.453 0.281 0.462 0.005
PCB 28 (µg/kg) 0.014 0.110 0.266 0.420 0.193 0.410 0.020 0.030 0.125 0.137 0.072 0.076 0.052 0.103
PCB 52 (µg/kg) 0.029 0.464 0.486 1.219 0.359 0.586 0.028 0.286 1.390 0.194 0.099 0.272 0.280 0.169
PCB 101 (µg/kg) 0.262 3.932 1.594 2.824 0.946 2.835 0.081 2.043 3.486 0.703 0.436 1.008 1.223 1.006
PCB 138 (µg/kg) 0.498 9.366 5.504 5.646 2.785 6.763 0.169 3.618 4.430 2.479 1.093 3.116 1.966 1.869
PCB 153 (µg/kg) 0.645 11.98 6.248 6.365 3.435 8.561 0.268 4.321 4.142 2.894 1.469 3.437 2.175 2.714
PCB 180 (µg/kg) 0.456 10.34 5.425 4.089 2.583 5.611 < LOQ 2.597 2.252 2.009 0.860 1.920 1.317 1.632
Arsenic (mg/kg) < LOQ 7.626 < LOQ < LOQ 5.815 10.83 < LOQ 5.935 < LOQ < LOQ 12.25 10.87 18.81 60.64
Cadmium (mg/kg) 0.315 0.527 0.252 0.296 0.388 0.572 0.220 0.344 0.320 0.425 0.385 0.263 0.719 1.205
Chromium (mg/kg) 173.8 199.4 113.9 103.6 123.9 101.7 136.9 113.9 114.5 128.1 62.42 66.18 84.61 86.88
Copper (mg/kg) 31.80 52.65 26.01 20.80 29.68 32.64 18.21 22.42 21.52 29.35 26.94 26.94 56.69 52.12
Lead (mg/kg) 27.96 45.52 30.83 24.29 29.50 44.02 20.15 21.29 20.38 25.13 38.39 62.23 121.3 137.0
Mercury (mg/kg) 0.083 0.096 0.180 0.107 0.152 0.156 0.052 0.043 0.067 0.140 0.065 0.083 0.115 0.248
Nickel (mg/kg) 112.9 171.8 84.53 72.73 87.15 71.51 116.9 110.3 86.95 102.8 52.81 52.42 82.89 71.47
Zinc (mg/kg) 142.7 224.9 155.9 132.0 219.5 529.5 103.6 120.1 151.7 202.0 133.9 222.8 426.3 1287
TOC (%) 0.540 0.552 4.409 3.113 2.136 3.281 2.191 1.515 3.907 3.922 0.816 5.253 0.454 0.663
  1. LOQ limit of quantitation, n.a not analysed