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Table 3 Ecotoxicological risk assessment of metal mixtures in surface sediments of the Pearl River intertidal zone

From: Risk assessment of eight metals and their mixtures to aquatic biota in sediments with diffusive gradients in thin films (DGT): a case study in Pearl River intertidal zone

Site STU RQSTU RQMEC/PNEC
Algae Crustaceans Fish
S1 0.75 0.32 0.29 753.87 604.86
S2 0.75 0.48 0.34 750.31 704.83
S3 0.45 0.25 0.19 446.67 394.07
S4 0.74 0.32 0.26 742.11 566.90
S5 0.13 0.08 0.05 125.50 90.02
S6 0.12 0.09 0.06 118.87 100.23
S7 0.77 0.33 0.16 773.48 396.34
S8 0.47 0.23 0.11 467.95 269.32
S9 0.07 0.07 0.05 71.90 83.56
S10 0.48 0.25 0.12 475.33 297.18
S11 0.31 0.19 0.10 313.39 211.54
S12 0.58 0.25 0.12 581.02 299.47
S13 0.18 0.13 0.08 176.46 144.68
S14 0.26 0.13 0.07 255.67 151.38
S15 0.17 0.11 0.06 172.17 126.66
S16 0.52 0.32 0.15 518.24 358.91
S17 0.30 0.15 0.08 299.70 181.01
S18 0.43 0.25 0.13 428.02 281.55
S19 0.06 0.06 0.04 62.45 70.77
S20 0.45 0.19 0.08 451.97 208.58
S21 0.15 0.09 0.05 147.42 104.61