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Table 3 Group-averaged PM elemental levels in μg/m 3

From: Cardiac effects of seasonal ambient particulate matter and ozone co-exposure in rats

 

Summer

Winter

Winter/Summer

Element (μg/m 3 )

CAPs

CAPs + O 3

CAPs

CAPs + O 3

Enrichment factor

Al

0.160

0.109

0.181

0.205

1.4

As

0.00249

0.00248

0.00159

0.00142

0.6

Ba

0.0513

0.0176

0.0263

0.0218

0.7

Ca

0.195

0.181

0.357

0.383

2.0

Cd

0.00041

0.00040

0.00072

0.00063

1.7

Co

0.00128

0.00034

0.00028

0.00048

0.5

Cr

0.00669

0.00784

0.00444

0.00351

0.5

Cu

0.143

0.0630

0.0536

0.0493

0.5

Fe

0.852

0.821

1.173

0.915

1.2

K

0.614

0.878

0.816

0.651

1.0

Li

0.00107

0.00204

0.00256

0.00194

1.4

Mg

0.0651

0.0475

0.1809

0.1543

3.0

Mn

0.0745

0.1203

0.1784

0.1352

1.6

Mo

0.00174

0.00117

0.00139

0.00071

0.7

Na

0.406

0.682

1.385

1.259

2.4

Ni

0.00301

0.00316

0.00378

0.00285

1.1

P

0.0526

0.0136

0.0184

0.0451

1.0

Pb

0.0225

0.0138

0.0173

0.0144

0.9

SO 4

46.7

51.5

18.9

14.6

0.3

Sb

0.00671

0.00488

0.00697

0.00579

1.1

Se

0.00488

0.00654

0.00395

0.00373

0.7

SiO 2

0.645

0.298

0.890

0.564

1.5

Sn

0.00568

0.00318

0.00521

0.00441

1.1

Sr

0.00238

0.00132

0.00301

0.00270

1.5

Ti

0.0237

0.0140

0.0219

0.0221

1.2

V

0.00165

0.00220

0.00337

0.00297

1.6

Zn

0.0619

0.0933

0.1158

0.1030

1.4

Organic C

48.43

59.75

35.19

32.61

0.6

Elemental C

2.46

4.43

3.87

3.18

1.0

OC/EC ratio

16.6

9.7

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