Table 6 Trace metals concentrations (mg/kg) in surface sediments from the coastal and in four rivers estuary of Sarawak

CZ1(1)

57.02 ± 0.09

3.02 ± 0.08

13,572.17 ± 5.21

7261.00 ± 2.02

102.61 ± 0.94

18.63 ± 0.71

21.64 ± 1.13

11.02 ± 1.05

5.08 ± 0.31

0.01 ± 0.003

CZ1(2)

101.34 ± 0.21

3.73 ± 0.11

14,356.00 ± 8.61

7183.17 ± 5.06

116.43 ± 1.52

11.30 ± 1.01

34.56 ± 1.10

10.82 ± 0.84

3.98 ± 0.16

0.01 ± 0.001

CZ2(1)

104.09 ± 0.17

2.98 ± 0.04

14,895.02 ± 9.87

7929.05 ± 2.71

99.42 ± 0.83

16.42 ± 0.81

33.81 ± 2.21

10.13 ± 0.95

4.33 ± 0.41

0.02 ± 0.003

CZ2(2)

107.14 ± 0.26

5.41 ± 0.10

10,142.25 ± 6.41

8018.33 ± 1.81

98.93 ± 0.74

19.95 ± 1.21

33.53 ± 1.41

10.01 ± 0.46

2.99 ± 0.11

0.03 ± 0.001

CZ3(1)

134.03 ± 0.11

4.19 ± 0.07

15,524.00 ± 9.01

8099.57 ± 2.68

108.67 ± 2.11

20.06 ± 0.09

34.66 ± 0.89

9.69 ± 0.89

4.73 ± 0.31

0.01 ± 0.001

CZ3(2)

137.11 ± 0.42

4.88 ± 0.13

15,872.31 ± 5.81

8131.08 ± 1.41

117.59 ± 2.48

24.01 ± 0.16

36.61 ± 2.22

9.89 ± 0.41

5.93 ± 0.24

-

CZ4(1)

141.26 ± 0.39

5.43 ± 0.09

16,324.19 ± 6.91

9561.75 ± 0.96

142.07 ± 1.79

24.98 ± 0.71

38.11 ± 1.51

10.98 ± 1.21

5.98 ± 0.31

0.06 ± 0.001

CZ4(2)

144.09 ± 0.41

6.29 ± 0.10

18,483.22 ± 10.73

8938.60 ± 2.31

149.62 ± 1.69

22.00 ± 0.11

40.21 ± 2.61

12.06 ± 1.13

6.07 ± 0.43

0.02 ± 0.002

CZ5

147.03 ± 0.72

6.67 ± 0.09

17,327.71 ± 9.19

9183.01 ± 4.86

152.88 ± 2.51

25.57 ± 0.94

41.85 ± 1.31

12.77 ± 0.91

7.01 ± 0.68

-

CZ6

148.17 ± 0.18

5.99 ± 0.13

17,114.81 ± 12.61

9172.66 ± 3.14

183.36 ± 3.10

26.11 ± 0.69

41.28 ± 1.88

13.61 ± 1.01

6.99 ± 0.77

0.01 ± 0.003

CZ7(1)

150.06 ± 0.21

6.88 ± 0.23

17,210.64 ± 6.43

9317.09 ± 2.51

183.94 ± 1.42

26.91 ± 0.76

44.69 ± 2.10

14.93 ± 1.66

7.61 ± 0.39

0.03 ± 0.005

CZ7(2)

154.19 ± 0.66

5.96 ± 0.11

18,221.73 ± 12.11

8989.73 ± 5.19

194.90 ± 3.51

27.28 ± 0.82

43.74 ± 1.21

14.96 ± 1.44

7.92 ± 0.94

-

CZ8

151.14 ± 0.28

4.85 ± 0.27

17,982.43 ± 7.17

9077.48 ± 2.38

164.27 ± 2.62

20.32 ± 0.91

47.99 ± 0.99

15.05 ± 0.89

6.28 ± 0.61

0.03 ± 0.002

CZ9(1)

155.05 ± 0.53

5.12 ± 0.11

14,942.99 ± 6.46

9141.12 ± 4.92

154.99 ± 1.11

17.32 ± 0.94

38.28 ± 1.03

14.91 ± 0.64

6.81 ± 0.95

0.04 ± 0.001

CZ9(2)

150.18 ± 0.81

5.11 ± 0.15

15,337.01 ± 8.04

8552.71 ± 3.41

158.26 ± 2.75

10.54 ± 0.61

36.18 ± 1.71

10.64 ± 0.48

5.01 ± 0.91

-

CZ10

153.22 ± 0.95

5.59 ± 0.21

15,194.05 ± 8.71

9002.93 ± 3.21

158.84 ± 1.46

11.45 ± 0.94

33.60 ± 2.04

10.71 ± 0.71

5.13 ± 0.17

-

Mean

133.45 ± 0.01

5.13 ± 0.021

16,415.17 ± 6.36

8597.46 ± 2.49

142.92 ± 1.25

20.18 ± 0.72

37.55 ± 0.61

12.01 ± 0.89

5.74 ± 0.01

0.02 ± 0.001

Average shale

95.00

13.00

47,200.00

15,000

850.00

68.00

90.00

45.00

19.00

0.300