436
Index
Plutonium (Pu) (Continued)

contents of, 392

exposure to, 391

health effects of, 391

intake of, 392

isotopes of, 389

mobile species of, 390

radionuclides of, 389–392

Polonium (Po)

in humans, 250–252

isotopes, 249

in marine environment, 251

in phosphate fertilizers, 250

in plants, 250

radioactive, 250

radioactivity hazard of, 249

in soils, 249

in tobacco, 250

in waters, 250

Polybrominated diphenyl ethers (PBDEs), 47, 51

Primary Pb, 167

Provisional maximum tolerable daily intake
(PMTDI), 150, 163, 363

Provisional tolerable weekly intake (PTWI),

5, 20, 61, 209, 333

Pulmonary baritosis, 27

Q
Quartz (SiO 2 ), 295

R
Radioactive Sr. See Strontium 90

Radium (Ra)
in air, 254–255
in humans
dietary exposure to, 256

health effects of, 255

in medical treatment, 255

occupational exposure to, 256

minerals of, 253

in plants, 255

in soils, 253–254

sources of, 253, 254

in waters, 254

Radon (Rn)

associated minerals of, 257

in environment

concentrations of, 258

exposure to, 257

pollution by, 257

in humans

exposure to, 258

inhalation of, 258

therapeutic use of, 259

Rare earth element (REE), 351, 371, 381

Recommended dietary allowance (RDA)
of vitamin B 12 , 92

Rhenium (Re)

associated minerals of, 261

in environment, 261

in humans, 261–262
oxidation state of, 261

production in 2010, 261

Rhodium (Rh)

in coal, 263

dietary exposure of, 265

in environment, 263

in food, 264

in humans, 264–265
minerals of, 263

oxidation state of, 263

production of, 263

in rocks, 263

in soils, 263

in waters, concentration of, 263–264

Rock salt, 71

Rubidium (Rb)

in air, 268, 268t
in coal, 267

in foodstuff, 270t
in humans
concentration of, 269

effects of clinical studies, 270–271
exposure to, 271

intake of, 271

mining of, 267

oxidation state of, 267

in plants, 269

in rocks, 267

in soils, 267, 268t
in waters, 267–268, 268t
Ruthenium (Ru)
dietary exposure to, 275

in environment, 273

in foodstuff, 274t
in humans, 274–275
oxidation states of, 273

production of, 273

radionuclides of, 274

S
Scandium (Sc)
in air, 278, 278t
in coal, 277

in food, 279

in humans, 279

in industrial sector, 277

intake of, 279

minerals of, 277
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