GBZ-T 160.20-2004 工作场所空气中钽及其化合物的测定方法

C52GBZGBZ/T160.202004Methodsfordeterminationoftantalumanditscompoundsintheairofworkplace20045212004121GBZ/T160.202004GBZ1GBZ2[Ditantaliumpentaoxide]2004121GBZ/T160.20200412GBZ159344.10.8m4.240mm4.325mm4.403L/min010L/min4.54.64.725ml4.855.15.2A100g/L5.3B50g/L5.4AC(H2SO4)0.5mol/L26.6ml1000ml5.5BC(H2SO4)0.25mol/L13.3ml1000ml5.642g/L5.75.0g/L5.85.90.1221g(99.99)3g10mlBB100ml1.0mg/ml10.0g/ml6GBZ1596.15L/min15min6.21L/min28h6.31L/min28h77.17.21.5g10mlB100ml4.0ml7.3:60.000.100.300.501.002.00ml4.0ml0.01.03.05.010.020.0μg1mlAA35min3ml5.0ml1min600nm320min(g)7.4(g)88.11293PVo=V1273+t101.3VoLVLtPkPa8.2225mC=2VoC2.442mg/m3mgVoL8.3GBZ15999.10.11g/ml0.15mg/m375L0.115g/ml2.86.89.298.2100.19.39.420mg10mg1mg0.5mg0.1mg0.02mg