4 美國環(huán)境保護(hù)局（1989年發(fā)表）：《有關(guān)室內(nèi)空氣質(zhì)素的國會(huì)報(bào)告》，空氣及幅射處/研究開發(fā)處共同編擬（EPA/400/1-89/001）。 美國，1996年，聯(lián)邦法律(Code of Federal Regulations)
第40條 環(huán)境保護(hù)(Title 40 - Protection of Environment)
第51章 實(shí)施計(jì)劃方案要求(Part 51 - REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS)
means any compound of carbon,excluding carbon monoxide,carbon dioxide,carbonic acid,metallic carbides or carbonates,and ammonium carbonate,which participates in atmospheric photochemical reactions.
This includes any such organic compound other than the following，which have been determined to have negligible photochemical reactivity：methane；ethane；methylene chloride (dichloromethane)；1,1,1-trichloroethane(methyl chloroform)；1,1,2-trichloro-1,2,2-trifluoroethane(CFC–113)；trichlorofluoromethane(CFC–11)；dichlorodifluoromethane(CFC–12)；chlorodifluoromethane(HCFC–22)；trifluoromethane(HFC–23)；1,2-dichloro 1,1,2,2-tetrafluoroethane(CFC–114)；chloropentafluoroethane(CFC–115)；1,1,1-trifluoro 2,2-dichloroethane(HCFC–123)；1,1,1,2-tetrafluoroethane(HFC–134a)；1,1-dichloro 1-fluoroethane(HCFC–141b)；1-chloro 1,1-difluoroethane(HCFC–142b)；2-chloro-1,1,1,2-tetrafluoroethane(HCFC–124)；pentafluoroethane(HFC–125)；1,1,2,2-tetrafluoroethane(HFC–134)；1,1,1-trifluoroethane (HFC–143a)；1,1-difluoroethane (HFC–152a)；parachlorobenzotrifluoride (PCBTF)；cyclic，branched，or linear completely methylated siloxanes；acetone；perchloroethylene (tetrachloroethylene) and perfluorocarbon compounds which fall into these classes：
(i)Cyclic, branched, or linear, completely fluorinated alkanes;
(ii)Cyclic, branched, or linear, completely fluorinated ethers with no unsaturations;
(iii)Cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations; and
(iv)Sulfur containing perfluorocarbons with no unsaturations and with sulfur bonds only to carbon and fluorine.
the air quality guidelines for specific substances,while they do not refer to specific environmental settings,may be difficult to apply to the indoor environment.for example,the relevant compounds often occur in mixtures at higher concentrations indoors than they do in outdoor air,thus providing multiple exposures.Indoor air samples may typically contain 100 or more VOCs at concentrations in the range of 1 to 100 ?/? each.
關(guān)閉返回