GB 00160-7

C52GBZGBZ/T160.72004Methodsfordeterminationofchromiumanditscompoundsintheairofworkplace20045212004121GBZ/T160.7-2004GBZ1GBZ2[ChromatesDichromatesChromiumtrioxide]2004121GB/T160191995GB/T1602019951995GBZ/T160.7200412GBZ1593357.9nm44.10.8m4.240mm4.325mm4.403L/min010L/min4.550ml4.64.710ml4.855.1201.67g/ml5.2201.42g/ml5.3100ml900ml5.40.16mol/L10ml990ml5.50.2828g105°C2h1ml100ml1.0mg/ml10.0g/ml6GBZ1596.15L/min15min6.21L/min28h6.31L/min28h77.17.25ml160°C10.0ml7.3610.01.02.03.04.05.0ml5ml10.0ml0.01.02.03.04.05.0μg/ml357.9nm3(g/ml)7.4(g/ml)88.11293PVo=V1273+t101.3VoLVLtPkPa8.2210cC=2VoCmg/m310mlcg/mlVoL8.3GBZ15999.10.1g/ml0.013mg/m3(75L)0.110g/ml19.2959.3200°C160°C959.43ml100g/L1100g/L1+210ml1000gCu2+Ca2+Co2+Mo6+Ni2+SiO32-Al3+Fe3+Zn2+200gMn2+Pb2+10550nm1111.111.205L/min11.310ml11.41212.1201.84g/ml12.24.5mol/L100ml300ml12.30.25g[C6H5NHNH2CO]100ml15d12.40.2828g105°C2h100ml1.00mg/ml10.0g/ml13GBZ15910.0ml3L/min15min1414.110.0ml14.235.0ml5.0ml14.360.00.100.200.400.600.801.00ml10.0ml0.01.02.04.06.08.010.0μg0.2ml1.5ml15min550nm3g14.4(g)1515.1115.232mC=3VoCmg/m3mgVoL15.3GBZ1591616.10.05g/ml0.01mg/m3(45L)0.051.0g/ml1.44.716.29516.315min90min1530min16.40.050.3mol/L0.2mol/L16.5Fe3+Cu2+Mo2+Cd2+Cr3+171818.10.8m10min10min1min18.240mm18.325mm18.405L/min18.510ml18.618.71919.1201.84g/ml19.250g/L50g/L19.34.5mol/L100ml300ml19.440g/L19.540g/L19.60.25g[C6H5NHNH2CO]100ml15d19.70.2828g105°C2h1ml100ml1.0mg/ml10.0g/ml20GBZ15920.13L/min15min20.21L/min28h20.31L/min28h23d2121.121.210.0ml30min5.0ml21.360.00.100.200.400.600.801.00ml10.0ml0.01.02.04.06.08.010.0μg0.2ml1.5ml15min550nm3g21.421.4.110.0ml(g)21.4.230min10.0ml(g)2222.1122.242mC=4VoCmg/m3mgVoL22.3GBZ1592323.10.05g/ml0.01mg/m3(45L)0.051.0g/ml1.44.723.2959623.315min90min1530min23.4Fe3+Cu2+Mo2+Cd2+