Table 1 Total arsenic concentration of squeezed cake and interstitial water of sediments from the Sites C0002, C0021 and C0022 at Nankai Trough

C0002D-1H-2

2

3.5

5.1

C0002D-1H-5

4

4.8

C0002D-2H-3

9

3.0

3.1

C0002D-2H-7

13

0.9

C0002D-3H-4

19

3.0

C0002D-4H-4

29

2.0

C0002D-5H-4

38

4.6

4.0

C0002D-6H-5

49

6.4

C0002D-7H-4

57

3.3

11.1

C0002D-9H-5

78

18.8

C0002D-10H-4

86

15.5

C0002D-11H-5

98

3.8

10.0

C0002D-12H-5

106

3.1

C0002D-13H-5

116

13.5

95.4

C0002D-14H-3

122

6.5

101.5

C0002D-14H-5

125

7.3

60.1

C0002D-15X-5

133

6.0

27.8

C0002D-16H-6

157

125.1

C0002D-17X-4

160

7.5

196.8

C0002D-18H-1

200

7.4

378.7

C0002D-18H-2

201

7.3

57.5

C0002K-1H-3

202

4.3

21.2

C0002K-3T-5

210

7.8

41.0

C0002K-4T-2

216

9.1

77.9

C0002K-5T-6

224

5.7

16.3

C0002K-6T-3

231

9.6

31.9

C0002K-7X-5

242

5.3

66.3

C0002K-8X-2

250

6.1

21.4

C0002K-9X-3

260

6.6

18.6

C0002K-10X-2

268

5.1

41.6

C0002K-11X-2

277

8.5

84.8

C0002L-1X-4

281

6.1

27.4

C0002L-3X-2

297

3.0

25.3

C0002L-4X-2

307

3.9

10.3

C0002L-5X-3

317

9.8

93.6

C0002L-6X-4

327

13.2

115.9

C0002L-7X-2

335

11.6

36.4

C0002L-8X-4

346

10.5

177.8

C0002L-9X-5

356

9.1

105.7

C0002L-10X-3

365

11.5

145.5

C0002L-11X-4

375

9.7

157.2

C0002L-12X-7

388

8.8

220.4

C0002P 2R-1

2173

2.5

C0002P 2R-2

2175

2.5

C0002P 2R-3

2176

3.6

C0002P 2R-4

2177

8.7

C0002P 3R-1

2182

6.6

C0002P 4R-1

2192

4.9

C0002P 4R-4

2196

4.3

C0002P 4R-6

2199

5.4

C0002P 4R-7

2203

2.5

C0002P 4R-8

2212

6.4

C0002P 4R-9

2213

11.6

C0002P 4R-10

2214

8.0

C0002P 4R-11

2217

8.9

C0021B-1H-4

3.7

5.7

6.6

C0021B-2H-3

81.6

4.8

15.2

C0021B-3H-4

91.7

7.9

14.0

C0021B-4H-6

104.9

7.6

13.0

C0021B-5H-2

109.9

4.6

25.2

C0021B-6H-3

119.5

4.4

10.8

C0021B-7H-4

129.9

5.7

13.5

C0021B-8H-2

138.0

5.0

13.9

C0021B-9H-2

147.5

6.9

14.0

C0021B-10H-8

162.1

5.4

36.1

C0021B-12H-2

170.0

5.9

15.3

C0021B-13T-3

177.4

7.1

27.8

C0021B-14T-2

186.4

22.7

93.7

C0022B-1H-2

1.2

8.0

4.0

C0022B-2H-5

23.4

6.0

6.5

C0022B-3H-2

30.3

4.4

3.0

C0022B-4H-2

39.5

3.5

7.4

C0022B-5H-2

49.3

5.1

3.7

C0022B-6H-2

58.6

8.9

5.6

C0002L-13X-1

392

4.3

124.8

C0002L-14X-3

403

8.4

58.4

C0002L-15X-4

412

5.2

25.8

C0002L-16X-3

422

7.4

82.3

C0002L-17X-4

432

8.5

70.0

C0002L-18X-3

440

7.5

47.8

C0002L-19X-3

451

6.6

140.6

C0002L-20X-2

459

5.1

55.3

C0002L-21X-4

471

6.6

96.9

C0002L-24X-5

501

7.6

54.2

C0002B-4R-2

505

3.9

46.2

C0002B-8R-2

535

34.4

C0002B-9R-3

545

35.9

C0002B-10R-2

554

23.1

C0002B-11R-3

564

39.2

C0002B-13R-2

582

17.8

C0002B-16R-3

612

3.9

21.1

C0002B-19R-3

641

20.7

C0002B-21R-3

659

12.1

C0002B-23R-3

678

23.9

C0002B-24R-2

686

52.3

C0002B-27R-2

714

3.7

17.3

C0002B-29R-2

734

17.8

C0002B-30R-2

743

25.4

C0002B-32R-5

764

21.7

C0002B-33R-2

771

14.8

C0002B-37R-2

807

4.0

20.4

C0002B-38R-3

818

4.4

33.3

C0002B-40R-2

836

25.3

C0002B-41R-3

847

30.5

C0002B-43R-5

868

5.5

C0002B-46R-4

895

17.6

C0002B-48R-5

915

8.8

C0002B-49R-3

922

7.7

C0002B-51R-5

944

3.5

C0002B-55R-2

978

5.1

C0002B-56R-2

987

5.5

C0002B-59R-2

1011

6.5

C0002B-61R-3

1021

5.3

C0002B-62R-2

1024

21.3

C0002B-64R-2

1043

3.9

25.5

C0002J-3R-3

913.6

5.5

3.3

C0022B-7H-7

74.0

6.3

5.6

C0022B-8H-1

76.5

5.5

5.7

C0022B-9T-2

84.8

4.4

14.6

C0022B-10T-2

90.3

5.7

22.1

C0022B-11T-1

94.5

4.8

21.2

C0022B-12T-1

99.5

4.6

8.8

C0022B-13T-1

104.5

4.4

12.8

C0022B-14X-4

114.1

6.5

23.9

C0022B-15X-3

118.5

5.3

22.0

C0022B-16X-4

127.5

5.9

85.8

C0022B-17X-2

134.8

2.9

41.7

C0022B-18X-4

145.6

4.7

35.6

C0022B-19X-2

153.4

5.5

94.1

C0022B-20X-4

193.6

6.8

10.3

C0022B-21X-6

204.3

5.3

8.5

C0022B-22X-1

210.5

4.8

22.0

C0022B-23X-4

221.2

10.1

30.3

C0022B-24X-3

268.7

8.6

18.8

C0022B-26X-3

288.3

5.2

13.3

C0022B-27X-4

294.3

6.1

10.9

C0022B-28X-3

297.4

5.4

6.4

C0022B-29X-2

301.3

5.2

3.8

C0022B-30X-3

307.3

4.8

20.5

C0022B-31X-2

315.9

5.7

23.4

C0022B-33X-7

341.7

7.8

17.8

C0022B-34X-3

345.4

7.1

24.7

C0022B-35X-5

357.8

6.9

7.2

C0022B-36X-3

364.2

11.3

13.1

C0022B-37X-2

373.1

6.3

14.2

C0022B-38X-3

384.3

6.6

26.6

C0022B-39X-2

391.0

5.7

8.7

C0022B-40X-3

403.2

7.5

7.9

C0022B-41X-2

411.4

5.4

5.4