©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,,,,,,,,,,,;,,,,:,1962(Rachel-Caresn)197265,,,,:,,,,:,,;,,1,,,?,?,,60,,,,,,,,,,,:,,,,,,,,2826©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,,;,,,,,,,,,:,,,,,,,,ppm(10-6)ppb(10-9)ppt(10-12),,,2,,,,,(),,,:11,21,31,,,,,,,,,,,,,,,,3,,,3826©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()(),,,,,,:A1()B1,C1:a1,,CO()b1,SO2NOxc1NOxac,,b,,,CO2SO2NOx,,;312,,,:,100Lm::,,,,,4,,,,,,,,,,,,,,,,,:20006154826