.-* n - > •• 



0141597 



LIST OF TABLES 



Number Page 



1 Background arsenic levels in livestock fluids and hair 7 



2 Background arsenic levels in livestock tissues 8 



3 Elevated arsenic levels in livestock fluids and hair 9 



4 Elevated arsenic levels in livestock tissues 11 



5 Diagnostic levels of arsenic in cattle 18 



6 Diagnostic levels of arsenic in horses 20 



7 Diagnostic levels of arsenic in sheep and goats 22 



8 Background cadmium levels in livestock fluids and hair 24 



9 Background cadmium levels in livestock tissues 25 



10 Elevated cadmium levels in livestock fluids and hair 27 



11 Elevated cadmium levels in livestock tissues 29 



12 Diagnostic levels of cadmium in cattle 34 



13 Diagnostic levels of cadmium in horses 37 



14 Diagnostic levels of cadmiun in sheep and goats 38 



15 Background lead levels in livestock fluids and hair 40 



16 Background lead levels in livestock tissues 4 1 



17 Elevated lead levels in livestock fluids and hair 43 



18 Elevated lead levels in livestock tissues 45 



19 Diagnostic levels of lead in cattle 51 



20 Diagnostic levels of lead in horses 54 



21 Diagnostic levels of lead in sheep and goats 57 



22 Background zinc levels in livestock fluids and hair 59 



23 Background zinc levels in livestock tissues 60 



24 Elevated zinc levels in livestock fluids and hair 61 



25 Elevated zinc levels in livestock tissues 63 



26 Diagnostic levels of zinc in cattle 67 



27 Diagnostic levels of zinc in horses 70 



28 Diagnostic levels of zinc in sheep 71 



29 Diagnostic levels of zinc in goats 73 



30 Phytotoxicity of total arsenic in soils 76 



31 Phytotoxicity of extractable arsenic in soils 78 



32 Phytotoxicity of arsenic in vegetation 80 



33 Comparison between concentra ted HC1 and NaHCC>3 for 



determination of extractable soil arsenic (ppm) 83 



34 Interpretive guide for concentrated HC1 soil extractable 



arsenic 8 5 



35 Relative tolerance of crops to arsenic 86 



36 Phytotoxicity of total cadmium in soils 91 



37 Phytotoxicity of extractable cadmium in soils 96 



38 Phytotoxicity of cadmium in vegetation 99 



39 Phytotoxicity of total lead in soils 112 



40 Phytotoxicity of extractable lead in soils 114 



41 Phytotoxicity of lead in vegetation ■ 115 



42 Phytotoxicity of total zinc in soils 119 



43 Phytotoxicity of extractable zinc in soils 122 



44 Phytotoxicity of zinc in vegetation 124 



45 Water quality criteria for arsenic, cadmium, lead, and 



z i nc 13 5 



46 Irrigation water criteria for arsenic, cadmium, lead, 



and zinc 137 



4" Maximum permissible cumulative metal loadings from sewage 



sludge to agricultural lands 139 



i v 



