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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