spiral.imperial.ac.uk · Web viewSupplementary Information. New constraints on elemental and Pb and Nd isotope compositions of South American and Southern African aerosol sources

Supplementary Information

New constraints on elemental and Pb and Nd isotope compositions of South American and Southern African aerosol sources

to the South Atlantic Ocean

R. Khondokera, D. Weissa, *, T. van de Flierdta, M. Rehkämpera, K. Kreissiga, B. J. Colesa, S. Strekopytovb, E. Humphreys-Williamsb, D. Shoufeia,c, A. Boryd, V. Bout-Roumazeillesd, P. Smichowskie, P. Cid-Agüerof, M. Babinskig, R. Losnoh, F. Monnai

a* Dept. of Earth Science & Engineering, Imperial College London, SW7 2AZ , UK

b Natural History Museum, London, SW7 5BD, UK

c CRPG, UMR-CNRS 7358, Vandœuvre, Villeneuve d’Ascq Cedex, France

dUniversity of Lille, CNRS, University of Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Orceanologie et de Géosciences, F 59000 Lille, France

e National Atomic Energy Commission, Av. Gral Paz 1499, Buenos Aires, Argentina

f University of Magallanes, Avda. Bulnes, 01855, Punta Arenas, Chile

g Geochronological Research Centre, University of São Paulo, São Paulo, Brazil

h LISA Faculty of Science, University of Paris, Batiment P4 393, Paris, France

I Univerisity of Bourgogne, Batiment Gabriel, Dijon, France

*[email protected]

Table S1. Limits of quantitation (LOQ) relevant for the sample solution aliquots analysed by ICP-AES and ICP-MS

Element

LOQ

ICP-AES, ppm

Al

0.1

Fe

0.1

K

0.01

Mg

0.01

Mn

0.02

Na

0.5

Cu

0.05

Pb

0.05

Cd

0.05

Zn

0.02

Cr

0.05

Ni

0.02

Co

0.02

V

0.05

ICP-MS, ppb

La

0.01

Ce

0.03

Pr

0.003

Nd

0.007

Sm

0.002

Eu

0.002

Gd

0.002

Tb

0.002

Dy

0.002

Ho

0.002

Er

0.002

Tm

0.001

Yb

0.002

Lu

0.002

Sc

0.03

Th

0.06

Y

0.005

Analyses of blank samples that were prepared and handled in the same manner as sample solutions consistently yielded concentrations below the LOQ values for all elements.

Table S2. Major element concentrations of samples from South America and Southern Africa, in % (w/w)

Sample ID

Sample Location

Al2O3

CaO

Fe2O3

K2O

MgO

MnO

Na2O

South America

Rural – Topsoil, Bed sediment (bulk)

4

Bahia San Sebastian, Southern Patagonia

4.66

26.8

1.93

0.878

3.76

0.112

1.51

5


11.6

1.80

4.41

1.92

2.76

0.115

3.31

8


12.8

1.72

5.63

2.23

2.49

0.127

3.46

9


12.3

2.31

5.17

2.15

2.49

0.139

3.73

10


11.5

1.72

5.21

2.02

2.22

0.126

3.05

11


11.3

2.14

4.95

2.00

2.81

0.113

2.93

12


11.8

1.85

4.55

1.78

1.68

0.0955

3.12

19

Rio Gallegos, Southern Patagonia

13.2

1.96

5.22

1.43

1.25

0.0482

2.28

21


12.9

3.90

5.55

1.17

1.97

0.131

2.71

35

Rio Santa Cruz, Southern Patagonia

14.1

3.31

4.70

1.65

1.65

0.114

3.02

40

Punta Arenas, Southern Patagonia

14.5

3.84

4.96

0.883

2.85

0.0811

2.43

42


15.8

1.16

6.01

0.861

1.27

0.0476

1.39

1

Rio Grande, Southern Patagonia

13.0

2.22

4.93

1.73

1.64

0.0835

2.75

2


13.4

2.47

5.08

1.89

1.84

0.0675

2.83

13


11.9

1.52

4.71

1.76

1.47

0.0489

2.57

15


12.5

2.80

3.93

1.61

1.77

0.0775

4.64

17


10.6

2.90

3.75

1.22

1.52

0.104

4.17

24


11.9

2.58

3.79

1.65

1.36

0.0791

3.49

27

Bahia Grande, Southern Patagonia

9.68

2.54

3.01

1.13

1.26

0.0724

2.55

28


12.0

3.01

4.51

1.65

2.05

0.101

2.83

30

Rio Santa Cruz, El Calafate, Southern Patagonia

13.0

2.20

4.20

1.61

1.17

0.0461

2.43

32


7.32

1.38

2.34

1.00

0.623

0.0298

1.57

33


11.8

2.25

4.16

1.72

1.36

0.0645

2.84

38

Argentino Lake, El Calafate, Southern Patagonia

11.6

2.52

4.73

1.37

1.35

0.0871

1.82

Volcanic – Volcanic clasts and tephra (bulk)

CH

Chaiten Volcano, Southern Volcanic Zone

13.5

1.64

1.46

3.07

0.324

0.0563

4.05

PU1

Puyehue Volcano, Southern Volcanic Zone

13.8

2.03

4.42

2.83

0.620

0.107

5.99

PU2


13.3

1.99

4.15

2.82

0.592

0.0981

5.66

PU3

Puyehue Volcano, lakeside near La Angostura

11.9

1.91

2.75

2.81

0.475

0.0709

4.54

CO

Cotopaxi Volcano, Northern Volcanic Zone

18.2

7.00

8.64

1.52

5.116

0.125

4.63

Table S2. (continued.)

Sample ID

Sample Location

Al2O3

CaO

Fe2O3

K2O

MgO

MnO

Na2O

Urban – Road dusts (50-100μm), Aerosols (<10μm)

3C

Urban Area, Buenos Aires

11.3

3.28

4.10

2.17

1.16

0.0727

2.37

9C


10.9

4.74

5.93

2.10

1.39

0.0939

2.32

110C


10.2

4.51

5.97

1.86

1.10

0.0864

2.15

112C


9.47

4.79

6.01

1.99

1.18

0.0916

1.96

3D


9.95

3.23

4.13

2.28

1.20

0.0659

2.02

9D


9.66

4.41

4.84

2.17

1.28

0.0774

2.05

110D


8.53

4.16

6.04

1.75

1.01

0.0852

1.79

112D


10.11

4.63

5.42

1.89

1.13

0.0840

2.09

648

Urban Area, São Paulo

0.543

0.0276

0.658

0.276

0.116

0.0184

0.526

649


0.219

0.157

0.263

0.0103

0.173

650


0.441

0.0204

0.483

0.214

0.116

0.0142

0.736

Southern Africa

Rural – Lichen

PILA

Rural Area, Johannesburg

0.530

7.21

0.329

0.366

0.164

0.0153

0.0187

Urban – Lichen

RIV

Urban Area, Johannesburg

1.08

0.600

0.526

0.759

0.173

0.0130

0.0396

DEL


1.34

2.98

0.706

0.851

0.206

0.0185

0.0392

CMG


1.09

0.642

0.627

0.760

0.130

0.0128

0.0181

EMER


1.61

2.95

0.803

0.577

0.197

0.0174

0.0329

HUDD


1.16

0.212

0.634

0.667

0.143

0.0158

0.0307

BOT2


1.05

0.129

0.594

0.786

0.153

0.0105

0.0325

Mine – Tree bark

DRD-TB

Mine Dump Site, Johannesburg

0.312

2.44

0.209

0.0657

0.0769

0.110

0.0266


Sample ID

Sample Location

Al2O3

CaO

Fe2O3

K2O

MgO

MnO

Na2O

South America – rural and volcanic sediment, <5 μm

4


3.55

n.d.

1.93

0.614

4.30

0.142

0.660

32


22.5

1.41

7.55

2.10

1.57

0.0923

0.950

42


22.9

0.15

9.07

0.823

1.30

0.0533

0.475

CH


14.4

1.47

1.68

3.72

0.445

0.063

4.31

PU2


14.1

1.76

3.76

3.46

0.466

0.101

5.27

Reference Material

USGS G-2

This study (n=12)

13.7

1.88

2.55

4.41

0.719

0.0310

3.86

RSD (%)

3.1

4.9

1.2

3.7

4.2

4.7

4.3

USGS G-2

Reference values

15.39

1.96

2.66

4.48

0.75

0.03

4.08

RSD (%)

1.9

4.1

6.4

2.9

4.0

33

3.2

The reference values for the USGS G-2 Granite reference material are from Gladney et al. (1992). The precision of our G-2 data is 1x relative standard deviation (RSD) calculated from the results of multiple individual analyses (n = 12).

n.d. = not determined.

Table S3. Rare earth element, Cu, Pb, Cd, Zn, Cr, Ni, Co, Y, Th, V, and Sc concentrations for samples from South America and Southern Africa (μg g-1)

Sample ID

Sample Location

La

Ce

Pr

Nd

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu

South America


4


7.72

17.8

2.00

8.01

1.66

0.427

1.58

0.248

1.52

0.311

0.898

0.137

0.864

0.133

5


20.1

45.2

5.21

21.0

4.52

1.06

4.14

0.653

3.92

0.814

2.29

0.338

2.14

0.329

8


22.2

49.9

5.72

23.0

4.96

1.13

4.56

0.715

4.37

0.881

2.59

0.383

2.48

0.374

9


21.5

48.3

5.58

22.4

4.74

1.14

4.43

0.705

4.32

0.874

2.54

0.378

2.41

0.368

10


21.0

47.0

5.36

21.6

4.55

1.06

4.29

0.669

4.10

0.826

2.34

0.360

2.29

0.356

11


20.7

46.5

5.35

21.6

4.60

1.07

4.26

0.666

4.05

0.820

2.38

0.358

2.30

0.350

12


21.9

49.1

5.63

22.5

4.86

1.13

4.37

0.689

4.16

0.839

2.43

0.359

2.31

0.353

19


13.3

27.3

2.84

10.5

2.07

0.635

1.66

0.269

1.68

0.357

1.11

0.178

1.21

0.196

21


18.6

40.4

4.62

18.5

3.84

1.09

3.46

0.530

3.18

0.642

1.82

0.275

1.77

0.267

35


19.4

43.3

4.81

19.3

4.07

1.10

3.99

0.627

3.90

0.809

2.34

0.359

2.35

0.366

40


14.0

27.9

2.97

11.5

2.10

0.794

1.80

0.264

1.56

0.307

0.837

0.125

0.783

0.117

42


7.72

16.7

1.87

7.49

1.59

0.398

1.44

0.239

1.51

0.322

0.943

0.153

1.03

0.162

1


20.1

44.7

5.20

21.0

4.48

1.10

4.21

0.663

4.08

0.824

2.42

0.359

2.29

0.349

2


20.9

46.3

5.37

21.6

4.64

1.10

4.42

0.700

4.30

0.876

2.52

0.380

2.46

0.376

13


22.0

47.8

5.67

22.9

4.87

1.14

4.52

0.699

4.27

0.859

2.51

0.374

2.41

0.375

15


20.0

44.2

5.15

20.8

4.36

1.10

4.18

0.656

3.98

0.810

2.29

0.347

2.22

0.338

17


20.3

45.5

5.36

21.7

4.53

1.07

4.32

0.675

4.05

0.814

2.28

0.348

2.17

0.323

24


17.5

37.9

4.40

17.7

3.68

0.991

3.50

0.543

3.29

0.672

1.94

0.287

1.86

0.285

27


17.9

34.9

3.77

14.1

2.68

0.809

2.52

0.417

2.76

0.565

1.71

0.256

1.66

0.250

28


17.0

36.6

4.17

16.6

3.56

0.930

3.30

0.519

3.17

0.649

1.91

0.286

1.83

0.293


Sample ID

Sample Location

La

Ce

Pr

Nd

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu

30


25.6

53.5

6.42

25.4

5.21

1.29

4.67

0.722

4.33

0.873

2.58

0.382

2.44

0.375

32


21.9

44.3

5.58

22.4

4.56

1.26

4.52

0.704

4.29

0.867

2.45

0.371

2.38

0.363

33


17.8

37.9

4.47

18.0

3.76

0.948

3.57

0.564

3.43

0.697

1.99

0.302

1.95

0.297

38


23.0

49.0

5.70

22.5

4.47

1.05

3.95

0.594

3.46

0.693

1.93

0.291

1.86

0.287


CH


37.2

70.6

7.15

23.1

3.86

0.755

3.27

0.506

2.78

0.573

1.80

0.278

1.99

0.310

PU1


30.8

69.0

8.66

37.0

8.41

1.61

8.45

1.32

8.89

1.80

5.83

0.833

5.88

0.881

PU2


30.2

66.9

8.46

36.1

8.27

1.66

8.38

1.30

8.73

1.76

5.75

0.819

5.73

0.869

PU3


24.9

52.8

6.75

29.2

6.77

1.36

7.07

1.09

7.37

1.48

4.79

0.689

4.93

0.739

CO


14.6

27.9

3.52

15.2

3.25

0.961

3.04

0.416

2.54

0.472

1.36

0.190

1.26

0.196

Urban – Road dusts (50-100μm)

3C


34.1

64.1

7.74

28.7

5.10

1.10

4.18

0.625

3.73

0.731

2.15

0.331

2.13

0.319

9C


45.8

95.1

10.6

40.3

7.36

1.33

5.61

0.794

4.56

0.868

2.49

0.368

2.44

0.381

110C


39.2

77.8

8.76

33.8

6.03

1.18

4.71

0.687

3.96

0.787

2.26

0.341

2.34

0.366

112C


52.8

106

11.9

43.7

7.15

1.15

5.17

0.735

3.86

0.713

1.91

0.285

1.85

0.279

3D


45.9

106

10.1

37.9

6.12

1.16

4.29

0.602

3.42

0.651

1.88

0.280

1.78

0.279

9D


42.2

90.1

10.3

39.0

6.49

1.14

4.58

0.608

3.39

0.621

1.77

0.269

1.73

0.266

110D


47.9

91.5

10.8

39.6

6.47

1.02

4.31

0.586

3.27

0.597

1.70

0.247

1.64

0.240

112D


39.5

81.4

8.87

33.3

5.80

1.11

4.56

0.637

3.68

0.716

2.07

0.301

1.93

0.295


Sample ID

Sample Location

La

Ce

Pr

Nd

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu

Urban – Aerosols (<10μm)

648


5.00

6.42

0.572

1.94

0.299

0.0648

0.209

0.0272

0.130

0.0214

0.0676

0.00727

0.0528

0.00593

649


4.13

4.88

0.518

1.31

650


9.95

9.53

0.871

2.62

0.399

0.100

0.286

0.0385

0.219

0.0360

0.0893

0.0113

0.0890

0.0127

Southern Africa

Rural – Lichen

PILA


5.56

10.6

0.929

3.13

0.492

0.122

0.413

0.0608

0.355

0.0690

0.191

0.0280

0.177

0.0270

Urban – Lichen

RIV


3.41

7.34

0.755

2.69

0.509

0.0961

0.453

0.0733

0.467

0.0907

0.260

0.0401

0.261

0.0425

DEL


5.55

12.0

1.19

4.31

0.809

0.153

0.705

0.111

0.689

0.139

0.385

0.0599

0.391

0.0615

CMG


3.85

8.32

0.868

3.19

0.605

0.119

0.546

0.0865

0.543

0.104

0.293

0.0434

0.276

0.0438

EMER


4.66

8.91

1.05

3.85

0.703

0.158

0.658

0.105

0.601

0.123

0.342

0.0555

0.337

0.0463

HUDD


3.70

7.80

0.869

3.25

0.617

0.116

0.564

0.0918

0.539

0.113

0.342

0.0512

0.328

0.0481

BOT2


3.51

7.12

0.748

2.82

0.555

0.103

0.457

0.0717

0.451

0.0872

0.244

0.0391

0.242

0.0389

Mine – Tree bark

DRD-TB


2.68

4.04

0.477

1.68

0.275

0.0624

0.245

0.0364

0.203

0.0399

0.105

0.0160

0.0985

0.0146


Sample ID

Sample Location

La

Ce

Pr

Nd

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu


4


5.89

14.2

1.64

6.38

1.35

0.307

1.28

0.191

1.07

0.220

0.646

0.0890

0.585

0.0900

32


32.4

100

9.91

41.3

9.42

2.16

9.53

1.45

7.96

1.57

4.72

0.636

4.26

0.609

42


6.14

12.7

1.45

5.22

1.13

0.309

1.06

0.187

1.17

0.264

0.838

0.133

0.948

0.153

CH


24.6

48.4

5.25

17.5

2.96

0.529

2.44

0.377

2.09

0.428

1.38

0.210

1.48

0.230

PU2


29.7

71.6

8.94

36.9

8.39

1.58

8.74

1.44

8.66

1.85

5.89

0.880

6.16

0.924

Reference Material

USGS G-2

This study (n=12)

86.7

158

15.9

52.4

7.19

1.34

4.00

0.459

2.16

0.353

0.853

0.113

0.696

0.0908

RSD (%)

0.7

0.6

1.5

1.1

1.2

1.8

2.1

2.0

2.7

2.5

1.9

2.8

12.0

2.2

USGS G-2

Reference values

87

158

16.3

51.5

6.8

1.41

4.1

0.49

2.08

0.35

0.88

0.117

0.72

0.12

RSD (%)

2.8

1.6

3.0

2.2

2.1

5.0

4.0

8.6

25

3.8

5.1

4.4

5.8

13


Sample ID

Sample Location

Cu

Pb

Cd

Zn

Cr

Ni

Th

Co

Y

V

Sc

South America


4


10.8

4.25

0.137

46.8

13.0

6.4

2.31

4.67

7.44

38.7

4.93

5


7.00

11.4

0.0541

69.3

42.0

14.0

7.20

8.55

19.2

100

12.7

8


7.44

13.0

0.0472

83.9

51.5

18.9

8.41

10.5

21.5

122

15.3

9


9.74

14.7

0.0630

76.0

43.8

16.8

7.49

10.9

21.2

115

14.1

10


9.85

14.2

0.0677

84.4

49.6

18.0

7.88

10.9

20.2

130

14.9

11


10.1

13.9

0.0527

83.2

46.7

17.4

7.74

11.0

20.3

116

14.4

12


6.15

10.8

0.0413

68.1

44.4

15.3

7.55

8.29

21.1

106

13.9

19


22.7

16.7

0.0655

71.9

39.4

9.3

7.28

8.13

9.18

84.0

13.9

21


12.6

8.12

0.0799

69.2

42.5

13.5

4.56

12.2

16.3

114

16.5

35


14.9

10.9

0.0935

72.6

27.1

18.3

5.89

13.3

21.1

109

14.6

40


22.3

9.86

<0.0015

55.4

30.5

22.0

3.90

18.8

7.72

105

12.2

42


19.4

13.5

0.0823

65.3

29.7

10.1

4.35

7.04

8.24

106

11.3

1


9.79

10.6

0.0861

67.0

38.7

12.4

6.76

7.73

19.9

94.8

12.3

2


9.78

11.2

0.0870

69.7

41.6

14.1

7.65

8.56

20.8

105

13.0

13


11.8

12.5

0.0607

68.9

45.0

12.8

7.64

5.32

21.8

104

13.4

15


8.11

9.49

0.0399

56.8

39.6

13.2

6.14

8.35

20.4

89.0

12.6

17


7.92

7.00

0.0364

48.2

34.0

13.3

4.92

8.28

20.7

88.2

12.4

24


6.76

8.45

0.0444

49.6

32.4

11.9

5.05

8.00

17.1

80.7

10.6

27


3.71

6.27

0.0337

39.0

66.9

10.5

4.83

7.43

14.5

66.7

10.1


Sample ID

Sample Location

Cu

Pb

Cd

Zn

Cr

Ni

Th

Co

Y

V

Sc


28


16.7

10.5

0.0784

64.9

54.0

19.9

5.95

11.0

17.1

102

13.8

30


10.5

12.9

0.0467

56.8

38.4

10.8

8.24

8.83

22.6

76.4

12.5

32


8.12

11.8

0.0474

55.3

28.5

11.2

6.90

7.39

21.9

76.8

11.5

33


10.3

10.5

0.0821

56.2

13.7

11.7

5.92

8.39

18.4

78.5

10.7

38


18.1

9.87

0.0989

65.1

47.1

18.4

7.11

11.9

17.9

99.1

12.8


CH


2.81

19.2

0.0612

33.7

0.974

0.343

12.9

1.19

12.0

3.30

2.31

PU1


17.8

16.5

0.192

83.8

0.606

0.409

0.482

3.66

48.0

15.3

18.3

PU2


15.6

17.4

0.194

82.7

1.45

0.477

0.473

3.78

47.1

17.7

18.2

PU3


13.6

18.8

0.140

80.8

0.329

0.268

0.346

2.25

41.8

6.36

15.2

CO


21.4

7.12

0.108

89.3

41.3

25.4

0.185

27.0

13.8

216

25.4


3C


234

244

0.999

519

66.2

23.3

8.52

7.71

17.9

52.8

6.70

9C


231

482

0.796

643

113

32.7

12.6

8.86

21.2

72.8

7.94

110C


794

489

1.73

1000

117

58.6

10.5

9.42

19.3

63.3

7.26

112C


944

569

1.79

1306

144

174

17.9

18.2

17.7

55.1

6.50

3D


298

269

0.819

422

79.0

19.2

12.6

7.25

16.3

46.3

5.60

9D


142

426

0.624

535

81.2

21.7

14.5

7.32

15.6

43.9

5.90

110D


1623

547

1.25

1199

116

46.0

12.7

9.35

15.0

52.4

5.44


Sample ID

Sample Location

Cu

Pb

Cd

Zn

Cr

Ni

Th

Co

Y

V

Sc


112D


627

407

1.75

993

96.5

44.3

11.2

8.70

17.4

58.7

6.87

648


93.7

97.1

4.50

584

146

25.2

0.619

2.08

40.4

40.4

0.437

649


42.2

133

5.54

990

n.d.

17.0

2.02

6.90

14.6

650


220

270

13.1

1357

278

53.2

0.716

9.48

34.5

34.5

0.705

Southern Africa

Rural – Lichen

PILA


11.7

6.07

0.0613

30.3

202

12.7

0.876

1.96

1.88

7.17

0.885

Urban – Lichen

RIV


23.5

68.7

0.295

84.5

147

8.99

1.07

1.59

2.48

11.1

1.37

DEL


33.0

108

0.212

80.6

196

14.4

1.64

2.56

3.81

17.2

1.99

CMG


20.6

71.0

0.322

121

91.8

10.9

1.21

2.34

2.81

11.6

1.54

EMER


44.1

93.7

0.292

80.5

119

12.3

1.41

2.67

3.09

13.6

1.71

HUDD


20.1

46.9

0.149

94.3

116

10.4

1.33

1.69

2.76

11.0

1.46

BOT2


18.5

52.5

0.158

72.8

156

10.8

1.15

1.75

2.22

11.2

1.27

Mine – Tree bark

DRD-TB


6.92

9.53

0.121

31.6

26.4

7.14

0.373

5.72

1.11

3.36

0.459


Sample ID

Sample Location

Cu

Pb

Cd

Zn

Cr

Ni

Th

Co

Y

V

Sc


4


10.9

4.71

0.146

68.0

9.76

6.04

5.59

36.4

4.09

5.85

1.68

32


19.5

24.1

0.098

130

45.0

30.4

14.7

147

22.0

43.6

10.6

42


28.8

18.8

0.082

96.7

45.4

13.0

9.09

159

12.6

6.60

5.85

CH


3.83

20.5

0.069

47.1

3.63

1.44

1.72

9.00

2.95

13.3

13.0

PU2


13.2

24.9

0.190

83.8

0.521

0.404

3.05

8.40

11.5

52.8

8.88

Reference Material

USGS G-2

This study (n=12)

9.12

31.6

0.0242

86.1

7.63

2.15

23.8

4.48

9.10

35.1

4.69

RSD (%)

6.0

1.6

22.8

4.3

7.6

9.4

1.2

1.8

1.6

2.3

4.8

USGS G-2

Reference values

8.50

29

0.016

85

8.7

2

23.5

4.5

9.4

38

3.8

RSD (%)

6.6

5.4

6.3

3.1

25

5.2

3.6

4.4

3.5

3.4

4.7

The reference values for the USGS G-2 Granite reference material are from Gladney et al. (1992) for Cd and Cr, from Dulski (2001) for the REE, Y and Th, and from Pretorius et al. (2006) for all other elements. The precision of our G-2 data is 1x relative standard deviation (RSD) calculated from the results of multiple individual analyses (n = 12).

n.d. = not determined.

Table S4. Lead and Nd isotope compositions and εNd values for samples from South America and Southern Africa

Sample ID

Sample Location

206Pb

207Pb

±2SE

208Pb

207Pb

±2SE

206Pb

204Pb

±2SE

207Pb

204Pb

±2SE

208Pb

204Pb

±2SE

144Nd

143Nd

±2SE

εNd

South America


4


1.1967

0.0001

2.4681

0.0001

18.696

0.001

15.623

0.002

38.560

0.005

0.512669

0.000029

0.6

5


1.2004

0.0002

2.4744

0.0004

18.781

0.007

15.645

0.009

38.713

0.028

0.512477

0.000014

-3.1

8


1.1902

0.0002

2.4641

0.0004

18.614

0.007

15.639

0.009

38.536

0.029

0.512463

0.000018

-3.4

9


1.1936

0.0003

2.4671

0.0005

18.668

0.008

15.640

0.010

38.586

0.033

0.512486

0.000018

-3.0

10


1.1988

0.0003

2.4726

0.0006

18.755

0.009

15.640

0.012

38.684

0.038

0.512505

0.000012

-2.6

11


1.1998

0.0001

2.4731

0.0001

18.771

0.002

15.645

0.003

38.691

0.007

0.512488

0.000011

-2.9

12


1.2000

0.0001

2.4740

0.0001

18.776

0.001

15.647

0.001

38.711

0.001

0.512477

0.000010

-3.1

19


1.1983

0.0002

2.4714

0.0004

18.725

0.004

15.626

0.006

38.620

0.021

0.512599

0.000017

-0.1

21


1.1978

0.0001

2.4717

0.0003

18.722

0.001

15.631

0.003

38.639

0.008

0.512623

0.000015

-0.3

35


1.1995

0.0001

2.4723

0.0001

18.757

0.003

15.637

0.003

38.663

0.009

0.512598

0.000014

-0.8

40


1.1870

0.0001

2.4590

0.0003

18.534

0.001

15.615

0.003

38.397

0.008

0.512814

0.000026

3.4

42


1.1960

0.0001

2.4695

0.0001

18.697

0.002

15.632

0.003

38.605

0.009

0.512561

0.000022

-1.5

1


1.1962

0.0003

2.4696

0.0006

18.707

0.010

15.639

0.012

38.622

0.038

0.512461

0.000035

-3.5

2


1.1978

0.0002

2.4713

0.0004

18.737

0.006

15.644

0.008

38.660

0.025

0.512448

0.000025

-3.7

13


1.2006

0.0001

2.4741

0.0002

18.772

0.002

15.636

0.003

38.686

0.005

0.512463

0.000010

-3.4

15


1.1968

0.0001

2.4695

0.0003

18.707

0.003

15.630

0.004

38.601

0.014

0.512540

0.000013

-1.9

17


1.1734

0.0001

2.4465

0.0001

18.327

0.002

15.618

0.002

38.212

0.008

0.512582

0.000020

-1.1

24


1.1967

0.0003

2.4707

0.0004

18.719

0.005

15.642

0.008

38.647

0.023

0.512559

0.000018

-1.5


Sample ID

Sample Location

206Pb

207Pb

±2SE

208Pb

207Pb

±2SE

206Pb

204Pb

±2SE

207Pb

204Pb

±2SE

208Pb

204Pb

±2SE

144Nd

143Nd

±2SE

εNd

27


1.1963

0.0001

2.4716

0.0003

18.701

0.001

15.632

0.008

38.636

0.008

0.512575

0.000021

-1.2

28


1.1987

0.0001

2.4742

0.0003

18.748

0.005

15.640

0.005

38.698

0.018

0.512511

0.000021

-2.5

30


1.1967

0.0001

2.4739

0.0003

18.711

0.005

15.635

0.005

38.681

0.020

0.512576

0.000014

-1.2

32


1.1814

0.0001

2.4579

0.0002

18.461

0.002

15.627

0.002

38.410

0.008

0.512573

0.000017

-1.3

33


1.1969

0.0001

2.4746

0.0001

18.715

0.002

15.636

0.002

38.694

0.005

0.512570

0.000017

-1.3

38


1.1967

0.0001

2.4745

0.0001

18.714

0.003

15.638

0.003

38.698

0.010

0.512544

0.000023

-1.8


CH


1.2026

0.0001

2.4780

0.0003

18.812

0.006

15.643

0.006

38.763

0.020

0.512586

0.000008

-1.0

PU1


1.1908

0.0001

2.4670

0.0002

18.601

0.003

15.621

0.004

38.538

0.013

0.512829

0.000009

3.7

PU2


1.1907

0.0001

2.4664

0.0003

18.590

0.008

15.612

0.008

38.505

0.027

0.512841

0.000010

4.0

PU3


1.1891

0.0001

2.4656

0.0001

18.570

0.002

15.617

0.002

38.506

0.004

0.512831

0.000009

3.8

CO


1.2002

0.0001

2.4703

0.0003

18.765

0.002

15.635

0.003

38.623

0.011

0.512816

0.000010

3.5


3C


1.1626

0.0001

2.4391

0.0001

18.158

0.001

15.619

0.001

38.094

0.003

0.511957

0.000010

-13.3

9C


1.1605

0.0001

2.4378

0.0001

18.141

0.002

15.631

0.003

38.104

0.007

0.511840

0.000009

-15.6

110C


1.1615

0.0001

2.4394

0.0001

18.154

0.001

15.629

0.001

38.126

0.003

0.511946

0.000009

-13.5

112C


1.1629

0.0001

2.4448

0.0001

18.187

0.002

15.639

0.002

38.233

0.007

0.511633

0.000009

-19.6

3D


1.1630

0.0001

2.4420

0.0001

18.165

0.003

15.618

0.003

38.128

0.046

0.511704

0.000010

-18.2

9D


1.1567

0.0001

2.4373

0.0001

18.084

0.001

15.633

0.001

38.100

0.005

0.511660

0.000009

-19.1


Sample ID

Sample Location

206Pb

207Pb

±2SE

208Pb

207Pb

±2SE

206Pb

204Pb

±2SE

207Pb

204Pb

±2SE

208Pb

204Pb

±2SE

144Nd

143Nd

±2SE

εNd


110D


1.1630

0.0001

2.4425

0.0001

18.190

0.002

15.640

0.002

38.200

0.007

0.511785

0.000017

-16.6

112D


1.1636

0.0001

2.4430

0.0001

18.186

0.001

15.629

0.002

38.182

0.005

0.511940

0.000015

-13.6

624


1.1887

0.0001

2.4472

0.0002

18.634

0.003

15.676

0.002

38.364

0.008

0.511852

0.000017

-15.3

648


1.1645

0.0002

2.4299

0.0003

18.192

0.012

15.621

0.012

37.959

0.032

n.d.

n.d.

n.d.

649


1.1592

0.0002

2.4265

0.0004

18.096

0.004

15.615

0.014

37.879

0.008

n.d.

n.d.

n.d.

650


1.1646

0.0001

2.4354

0.0002

18.189

0.006

15.618

0.003

38.036

0.009

n.d.

n.d.

n.d.

681


1.1829

0.0002

2.4333

0.0003

18.518

0.012

15.655

0.012

38.092

0.032

0.511915

0.000019

-14.1

Southern Africa

Rural – Lichen

PILA


1.1380

0.0001

2.4043

0.0002

17.773

0.002

15.617

0.003

37.547

0.007

0.511610

0.000015

-20.1

Urban – Lichen

RIV


1.0936

0.0001

2.3573

0.0001

17.002

0.003

15.547

0.003

36.650

0.009

0.511527

0.000014

-21.7

DEL


1.0926

0.0001

2.3574

0.0001

16.968

0.002

15.531

0.002

36.613

0.007

0.511596

0.000012

-20.3

CMG


1.1162

0.0001

2.3568

0.0004

17.394

0.005

15.583

0.007

36.727

0.021

0.511585

0.000017

-20.5

EMER


1.0956

0.0001

2.3596

0.0002

17.019

0.002

15.534

0.003

36.653

0.009

0.511564

0.000013

-21.0

HUDD


1.1058

0.0001

2.3692

0.0003

17.191

0.004

15.546

0.005

36.833

0.015

0.511646

0.000017

-19.4

BOT2


1.0939

0.0017

2.3590

0.0004

16.984

0.066

15.526

0.037

36.679

0.107

0.511565

0.000015

-20.9

Mine – Tree bark

DRD-TB


1.3133

0.0002

2.2866

0.0003

21.186

0.007

16.132

0.007

36.886

0.022

0.511306

0.000018

-26.0

Table S4. (continued)

Sample ID

Sample Location

206Pb

207Pb

±2SE

208Pb

207Pb

±2SE

206Pb

204Pb

±2SE

207Pb

204Pb

±2SE

208Pb

204Pb

±2SE

144Nd

143Nd

±2SE

εNd


4

1.1946

0.0001

2.4695

0.0001

18.683

0.001

15.639

0.001

38.619

0.003

0.512672

0.000018

0.7

32

1.1942

0.0001

2.4739

0.0001

18.699

0.001

15.658

0.001

38.736

0.003

0.512616

0.000015

-0.4

42

1.1965

0.0001

2.4702

0.0001

18.709

0.001

15.637

0.001

38.627

0.003

0.512548

0.000023

-1.8

CH

1.2031

0.0001

2.4781

0.0002

18.816

0.003

15.640

0.003

38.758

0.011

0.512618

0.000013

-0.4

PU2

1.1892

0.0001

2.4653

0.0001

18.577

0.001

15.621

0.001

38.510

0.003

0.512868

0.000014

4.5

Reference Material

±2SD

±2SD

±2SD

±2SD

±2SD

±2SD

USGS G-2

This study (n=22)

1.1764

0.0010

2.4873

0.0007

18.399

0.016

15.640

0.014

38.902

0.044

0.512230

0.000025

-8.0

USGS G-2

Weis et al. (2006)

1.1765

0.0002

2.4878

0.0002

18.396

0.023

15.636

0.005

38.900

0.019

0.512235

0.000015

-8.0

The quoted 2SE ‘within-run’ precision quoted for samples is 2x standard error of the mean calculated from the individual cycles of each run.

The quoted precision for the USGS G-2 Granite reference material is the 2SD ‘external’ precision calculated from the results of multiple sample runs, for both the data of this study and the literature values of Weis et al. (2006).

n.d. = not determined. εNd values are reported relative to a CHUR value of 0.512638.

Documents

spiral.imperial.ac.uk · Web viewSupplementary Information. New constraints on elemental and Pb and Nd isotope compositions of South American and Southern African aerosol sources