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6、 19(10): 857 871 & Kim et al. 2008. Inhal. Toxicol. 20(6): 575 583. AC , 92 V 1 000 . MFC(Mass Flow Controller, AERA, FC 7810CD 4V, Japan) . - (evaporation-condensation method) Differential Mobility Analyzer System(DMAS) . 90 , , , . 0.5 % . 300 mg/kg body weight/day 28 , , . . 2 , , . KS D 2716:2008 7 3 3.1 , . 135513 7017 (02)60094114 (02)600948878 http:/ KS D 2716:2008 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Measurement of nanoparticle diameter Transmission electron microscope ICS 71.040 Korean Agency for Technology and Standards http:/www.kats.go.kr