APPENDIX A TO PART 835-DERIVED AIR CONCENTRATIONS (DAC) FOR CONTROLLING APPENDIX B TO PART 835-ALTERNATIVE ABSORPTION FACTORS AND LUNG
RETENTION CLASSES FOR SPECIFIC COMPOUNDS Alternative absorption factors and lung retention classes for specific compounds are listed by element in this appendix for cross-referencing with the inhalation DACs in appendix A to this part. The data shown in this appendix are listed by element in alphabetical order. ------------------------------------------------------------------------------------------------------- Element/symbol | Atomic | Compound | f 1 | Lung retention | No. | | | class ------------------------------------------------------------------------------------------------------- | | | | Actinium/Ac ...... | 89 | Oxides, hydroxides ............... | 1.E-03 .... | Y | | Halides, nitrates ................ | 1.E-03 .... | W | | All others ....................... | 1.E-03 .... | D Aluminum/Al ...... | 13 | Oxides, hydroxides, carbides, | 1.E-02 .... | W | | halides, nitrates, elemental form | | | | All others ....................... | 1.E-02 .... | D Americium/Am ..... | 95 | All forms ........................ | 1.E-03 .... | W Antimony/Sb ...... | 51 | Oxides, hydroxides, halides, | 1.E-01 .... | D | | sulphides, sulphates, nitrates | | | | All others ....................... | 1.E-02 .... | W Arsenic/As ....... | 33 | All forms ........................ | 5.E-01 .... | W Astatine/At ...... | 85 | All (as a halide) ................ | 1.E + 00 | W or D; dependent | | | | upon associated | | | | element. Barium/Ba ........ | 56 | All forms ........................ | 1.E-01 .... | D Berkelium/Bk ..... | 97 | All forms ........................ | 5.E-04 .... | W Beryllium/Be ..... | 4 | Oxides, halides, nitrates ........ | 5.E-03 .... | Y | | All others ....................... | 5.E-03 .... | W Bismuth/Bi ....... | 83 | All except nitrates .............. | 5.E-02 .... | W | | Nitrates ......................... | 5.E-02 .... | D Bromine/Br ....... | 35 | Bromides ......................... | 1.E + 00 | W or D; dependent | | | | upon associated | | | | element. Cadmium/Cd ....... | 48 | Oxides, hydroxides ............... | 5.E-02 .... | Y | | Sulphates, halides ............... | 5.E-02 .... | W | | All others ....................... | 5.E-02 .... | D Calcium/Ca ....... | 20 | All forms ........................ | 3.E-01 .... | W Californium/Cf ... | 98 | Oxides, hydroxides ............... | 1.E-03 .... | Y | | All others ....................... | 1.E-03 .... | W Carbon/C ......... | 6 | Oxides{1}......................... | - ......... | D | | Organic (C-11) ................... | 1.E + 00 | W | | Organic (C-14) ................... | 1.E + 00 | W Cerium/Ce ........ | 58 | Oxides, hydroxides, fluorides .... | 3.E-04 .... | Y | | All others ....................... | 3.E-04 .... | W Cesium/Cs ........ | 55 | All forms ........................ | 1.E + 00 | D Chlorine/Cl ...... | 17 | Chloride ......................... | 1.E + 00 | W or D; dependent | | | | upon associated | | | | element. Chromium/Cr ...... | 24 | Oxides, hydroxides ............... | 1.E-01 .... | Y | | Halides, nitrates ................ | 1.E-01 .... | W | | All others ....................... | 1.E-01 .... | D | | Ingestion{2} | | | | Trivalent ........................ | 1.E-02 .... | - | | Hexavalent ....................... | 1.E-01 .... | - Cobalt/Co ........ | 27 | Oxides, hydroxides, halides, | 5.E-02 .... | Y | | nitrates | | | | All others ....................... | 5.E-02 .... | W | | Ingestion only{2}................. | 3.E-01 .... | - Copper/Cu ........ | 29 | Oxides, hydroxides ............... | 5.E-01 .... | Y | | Sulphites, halides, nitrates ..... | 5.E-01 .... | W | | All others ....................... | 5.E-01 .... | D Curium/Cm ........ | 96 | All forms ........................ | 1.E-03 .... | W Dysprosium/Dy .... | 66 | All forms ........................ | 3.E-04 .... | W Einsteinium/Es ... | 99 | All forms ........................ | 5.E-04 .... | W Erbium/Er ........ | 68 | All forms ........................ | 3.E-04 .... | W Europium/Eu ...... | 63 | All forms ........................ | 1.E-03 .... | W Fermium/Fm ....... | 100 | All forms ........................ | 5.E-04 .... | W Fluorine/F ....... | 9 | Fluoride ......................... | 1.E + 00 | Y, W, or D; | | | | dependent upon | | | | associated | | | | element. Francium/Fr ...... | 87 | All forms ........................ | 1.E + 00 | D Gadolinium/Gd .... | 64 | Oxides, hydroxides, fluorides .... | 3.E-04 .... | W | | All others ....................... | 3.E-04 .... | D Gallium/Ga ....... | 31 | Oxides, hydroxides, carbides, | 1.E-03 .... | W | | halides, nitrates | | | | All others ....................... | 1.E-03 .... | D Germanium/Ge ..... | 32 | Oxides, sulphides, halides ....... | 1.E + 00 | W | | All others ....................... | 1.E + 00 | D Gold/Au .......... | 79 | Oxides, hydroxides ............... | 1.E-01 .... | Y | | Halides, nitrates ................ | 1.E-01 .... | W | | All others ....................... | 1.E-01 .... | D Hafnium/Hf ....... | 72 | Oxides, hydroxides, halides, | 2.E-03 .... | W | | carbides, nitrates | | | | All others ....................... | 2.E-03 .... | D Holmium/Ho ....... | 67 | All forms ........................ | 3.E-04 .... | W Hydrogen/H ....... | 1 | Water, elemental ................. | 1.E + 00 | - Indium/In ........ | 49 | Oxides, hydroxides, halides ...... | 2.E-02 .... | W | | All others ....................... | 2.E-02 .... | D Iodine/I ......... | 53 | All forms ........................ | 1.E + 00 | D Iridium/Ir ....... | 77 | Oxides, hydroxides ............... | 1.E-02 .... | Y | | Halides, nitrates, metallic form . | 1.E-02 .... | W | | All others ....................... | 1.E-02 .... | D Iron/Fe .......... | 26 | Oxides, hydroxides, halides ...... | 1.E-01 .... | W | | All others ....................... | 1.E-01 .... | D Lanthanum/La ..... | 57 | Oxides, hydroxides ............... | 1.E-03 .... | W | | All others ....................... | 1.E-03 .... | D Lead/Pb .......... | 82 | All forms ........................ | 2.E-01 .... | D Lutetium/Lu ...... | 71 | Oxides, hydroxides, fluorides .... | 3.E-04 .... | Y | | All others ....................... | 3.E-04 .... | W Magnesium/Mg ..... | 12 | Oxides, hydroxides, carbides, | 5.E-01 .... | W | | halides, nitrates | | | | All others ....................... | 5.E-01 .... | D Manganese/Mn ..... | 25 | Oxides, hydroxides, halides, | 1.E-01 .... | W | | nitrates | | | | All others ....................... | 1.E-01 .... | D Mendelevium/Md ... | 101 | All forms ........................ | 5.E-04 .... | W Mercury/Hg ....... | 80 | Oxides, hydroxides, halides, | 2.E-02 .... | W | | nitrates, sulphites | | | | Sulphates, elemental form ........ | 2.E-02 .... | D | | Organic forms .................... | 1.E + 00 | D | | Vapor{1} ......................... | - | D Molybdenum/Mo .... | 42 | Oxides, hydroxides, MoS 2 ........ | 5.E-02 .... | Y | | All others ....................... | 8.E-01 .... | D | | Ingestion{2} | | | | MoS 2 ............................ | 5.E-02 .... | - | | All Others ....................... | 8.E-01 .... | - Neodymium/Nd ..... | 60 | Oxides, hydroxides, carbides, | 3.E-04 .... | W | | fluorides | | | | All others ....................... | 3.E-04 .... | Y Neptunium/Np ..... | 93 | All forms ........................ | 1.E-03 .... | W Nickel/Ni ........ | 28 | Oxides, hydroxides ............... | 5.E-02 .... | W | | All others (vapor){1}............. | - | D Niobium/Nb ....... | 41 | Oxides, hydroxides ............... | 1.E-02 .... | Y | | All others ....................... | 1.E-02 .... | W Osmium/Os ........ | 76 | Oxides, hydroxides ............... | 1.E-02 .... | Y | | Halides, nitrates ................ | 1.E-02 .... | W | | All others ....................... | 1.E-02 .... | D Palladium/Pd ..... | 46 | Oxides, hydroxides ............... | 5.E-03 .... | Y | | Nitrates ......................... | 5.E-03 .... | W | | All others ....................... | 5.E-03 .... | D Phosphorus/P ..... | 15 | Phosphates ....................... | 8.E-01 .... | W or D; dependent | | | | upon associated | | | | element. Platinum/Pt ...... | 78 | All forms ........................ | 1.E-02 .... | D Plutonium/Pu ..... | 94 | Oxides, hydroxides ............... | 1.E-05 .... | Y | | Nitrates ......................... | 1.E-04 .... | W | | All other ........................ | 1.E-03 .... | W | | [Note: Use same values for | | | | ingestion] | | Polonium/Po ...... | 84 | Oxides, hydroxides, nitrates ..... | 1.E-01 .... | W | | All others ....................... | 1.E-01 .... | D Potassium/K ...... | 19 | All forms ........................ | 1.E + 00 | D Praseodymium/Pr .. | 59 | Oxides, hydroxides, carbides, | 3.E-04 .... | Y | | fluorides | | | | All others ....................... | 3.E-04 .... | W Promethium/Pm .... | 61 | Oxides, hydroxides, carbides, | 3.E-04 .... | Y | | fluorides | | | | All others ....................... | 3.E-04 .... | W Protactinium/Pa .. | 91 | Oxides, hydroxides ............... | 1.E-03 .... | Y | | All others ....................... | 1.E-03 .... | W Radium/Ra ........ | 88 | All forms ........................ | 2.E-01 .... | W Rhenium/Re ....... | 75 | Oxides, hydroxides, halides, | 8.E-01 .... | W | | nitrates | | | | All others ....................... | 8.E-01 .... | D Rhodium/Rh ....... | 45 | Oxides, hydroxides ............... | 5.E-02 .... | Y | | Halides .......................... | 5.E-02 .... | W | | All others ....................... | 5.E-02 .... | D Rubidium/Rb ...... | 37 | All forms ........................ | 1.E + 00 | D Ruthenium/Ru ..... | 44 | Oxides, hydroxides ............... | 5.E-02 .... | Y | | Halides .......................... | 5.E-02 .... | W | | All others ....................... | 5.E-02 .... | D Samarium/Sm ...... | 62 | All forms ........................ | 3.E-04 .... | W Scandium/Sc ...... | 21 | All forms ........................ | 1.E-04 .... | Y Selenium/Se ...... | 34 | Oxides, hydroxides, carbides ..... | 8.E-01 .... | W | | All others ....................... | 8.E-01 .... | D | | Ingestion only{2}................. | 5.E-02 .... | - Silicon/Si ....... | 14 | Ceramic forms .................... | 1.E-02 .... | Y | | Oxides, hydroxides, carbides, | 1.E-02 .... | W | | nitrates | | | | All others ....................... | 1.E-02 .... | D Silver/Ag ........ | 47 | Oxides, hydroxides ............... | 5.E-02 .... | Y | | Nitrates, sulphides .............. | 5.E-02 .... | W | | All others, elemental form ....... | 5.E-02 .... | D Sodium/Na ........ | 11 | All forms ........................ | 1.E + 00 | D Strontium/Sr ..... | 38 | SrTiO 3 .......................... | 1.E-02 .... | Y | | All others (soluble) ............. | 3.E-01 .... | D Sulfur/S ......... | 16 | All inorganic .................... | 8.E-01 .... | D | | Elemental form ................... | 8.E-01 .... | W | | Gases ............................ | 1.E + 00 | D | | Ingestion{2} | | | | All inorganic .................... | 1.E-01 .... | - Tantalum/Ta ...... | 73 | Oxides, hydroxides, halides, | 1.E-03 .... | Y | | carbides, nitrates, nitrides | | | | All others ....................... | 1.E-03 .... | W Technetium/Tc .... | 43 | Oxides, hydroxides, halides, | 8.E-01 .... | W | | nitrates | | | | All others ....................... | 8.E-01 .... | D Tellurium/Te ..... | 52 | Oxides, hydroxides, nitrates ..... | 2.E-01 .... | W | | All others ....................... | 2.E-01 .... | D Terbium/Tb ....... | 65 | All forms ........................ | 3.E-04 .... | W Thallium/Tl ...... | 81 | All forms ........................ | 1.E + 00 | D Thorium/Th ....... | 90 | Oxides, hydroxides ............... | 2.E-04 .... | Y | | All others ....................... | 2.E-04 .... | W Thulium/Tm ....... | 69 | All forms ........................ | 3.E-04 .... | W Tin/Sn ........... | 50 | Oxides, hydroxides, halides, | 2.E-02 .... | W | | nitrates, sulphides, Sn 3(PO 4) 4 | | | | All others ....................... | 2.E-02 .... | D Titanium/Ti ...... | 22 | SrTiO 3 .......................... | 1.E-02 .... | Y | | Oxides, hydroxides, carbides, | 1.E-02 .... | W | | halides, nitrates | | | | All others ....................... | 1.E-02 .... | D Tungsten/W ....... | 74 | Ingestion{2} | | | | Tungstic acid .................... | 1.E-02 .... | - | | All others ....................... | 3.E-01 .... | - Uranium/U ........ | 92 | UO 2, U 3O 8 ..................... | 2.E-03 .... | Y | | UO 3, tetravalent compounds ...... | 5.E-02 .... | W | | UF 6, uranyl compounds ........... | 5.E-02 .... | D Vanadium/V ....... | 23 | Oxides, hydroxides, carbides, | 1.E-02 .... | W | | halides | | | | All others ....................... | 1.E-02 .... | D Ytterbium/Yb ..... | 70 | Oxides, hydroxides, fluorides .... | 3.E-04 .... | Y | | All others ....................... | 3.E-04 .... | W Yttrium/Y ........ | 39 | Oxides, hydroxides ............... | 1.E-04 .... | Y | | All others ....................... | 1.E-04 .... | W Zinc/Zn .......... | 30 | All forms ........................ | 5.E-01 .... | Y Zirconium/Zr ..... | 40 | Carbides ......................... | 2.E-03 .... | Y | | Oxides, hydroxides, halides, | 2.E-03 .... | W | | nitrates | | | | All others ....................... | 2.E-03 .... | D ------------------------------------------------------------------------------------------------------- {1}A dash indicates no data for the value shown. {2}For ingestion, no lung retention classes are listed.
APPENDIX C TO PART 835-DERIVED AIR CONCENTRATION (DAC) FOR WORKERS