Chapter 40 Ruthenium [Ru, 44] .......................................................................... 273
40.1 Introduction ......................................................................... 273
40.2 Environment ........................................................................ 273
40.3 Radionuclides ...................................................................... 274
40.4 Humans ................................................................................ 274
Chapter 41 Scandium [Sc, 21] ............................................................................. 277
41.1 Introduction ......................................................................... 277
41.2 Soils ..................................................................................... 277
41.3 Waters .................................................................................. 278
41.4 Air ........................................................................................ 278
41.5 Plants ................................................................................... 279
41.6 Humans ................................................................................ 279
Chapter 42 Selenium [Se, 34] .............................................................................. 281
42.1 Introduction ......................................................................... 281
42.2 Soils ..................................................................................... 282
42.3 Waters .................................................................................. 285
42.4 Air ........................................................................................ 286
42.5 Plants ................................................................................... 286
42.6 Humans ................................................................................ 289
42.7 Animals ............................................................................... 291
Chapter 43 Silicon [Si, 14] .................................................................................. 295
43.1 Introduction ......................................................................... 295
43.2 Soils ..................................................................................... 295
43.3 Waters .................................................................................. 296
43.4 Air ........................................................................................ 297
43.5 Plants ................................................................................... 297
43.6 Humans ................................................................................ 297
Chapter 44 Silver [Ag, 47] .................................................................................. 301
44.1 Introduction ......................................................................... 301
44.2 Soils ..................................................................................... 301
44.3 Waters ..................................................................................302
44.4 Air ........................................................................................ 303
44.5 Plants ................................................................................... 303
44.6 Humans ................................................................................304
Contents
xiii
40.1 Introduction ......................................................................... 273
40.2 Environment ........................................................................ 273
40.3 Radionuclides ...................................................................... 274
40.4 Humans ................................................................................ 274
Chapter 41 Scandium [Sc, 21] ............................................................................. 277
41.1 Introduction ......................................................................... 277
41.2 Soils ..................................................................................... 277
41.3 Waters .................................................................................. 278
41.4 Air ........................................................................................ 278
41.5 Plants ................................................................................... 279
41.6 Humans ................................................................................ 279
Chapter 42 Selenium [Se, 34] .............................................................................. 281
42.1 Introduction ......................................................................... 281
42.2 Soils ..................................................................................... 282
42.3 Waters .................................................................................. 285
42.4 Air ........................................................................................ 286
42.5 Plants ................................................................................... 286
42.6 Humans ................................................................................ 289
42.7 Animals ............................................................................... 291
Chapter 43 Silicon [Si, 14] .................................................................................. 295
43.1 Introduction ......................................................................... 295
43.2 Soils ..................................................................................... 295
43.3 Waters .................................................................................. 296
43.4 Air ........................................................................................ 297
43.5 Plants ................................................................................... 297
43.6 Humans ................................................................................ 297
Chapter 44 Silver [Ag, 47] .................................................................................. 301
44.1 Introduction ......................................................................... 301
44.2 Soils ..................................................................................... 301
44.3 Waters ..................................................................................302
44.4 Air ........................................................................................ 303
44.5 Plants ................................................................................... 303
44.6 Humans ................................................................................304
Contents
xiii