GBZT160232004工作场所空气中钨及其化合物的测定方法

C52GBZGBZ/T160.232004Methodsfordeterminationoftungstenanditscompoundsintheairofworkplace20045212004121GBZ/T160.232004GBZ1GBZ2[TungstenTungstencarbide]2004121GB/T1610319951995GBZ/T160.23200412GBZ1593400nm44.10.8m4.240mm4.325mm4.403L/min010L/min4.550ml4.64.7100ml4.825ml4.955.1201.42g/ml5.2201.18g/ml5.3201.67g/ml5.4?201.84g/ml5.5251.68g/ml5.6100ml900ml5.7100ml500ml300ml1000ml5.85g/L0.5g100ml6mol/L5.9250g/L5.1015g/L3mol/L105.110.1736gNa2WO4H2O100ml1.0mg/ml6GBZ1596.15L/min15min6.21L/min28h6.31L/min28h77.17.22ml20ml100ml10.0ml7.360.000.200.400.600.801.00ml1.0ml0.0200.0400.0600.0800.01000.0μg110.0ml5ml2ml0.5ml400nm3g7.4(g)88.11293PVo=V1273+t101.3VoLVLtPkPa8.22mC=2VoCmg/m3mgVoL99.10.3g/ml0.4mg/m375L0.310g/ml1.33.49.2921009.3200g100g50g20g9.4