1、C 52 GBZ GBZ/T 160.7 2004 Methods for determination of chromium and its compounds in the air of workplace 2004 5 21 2004 12 1 GBZ/T 160.7-2004 GBZ 1 GBZ 2 Chromates Dichromates Chromium trioxide 2004 12 1 GB/T 16019 1995GB/T 16020 1995 1995 GBZ/T 160.7 2004 1 2 GBZ 159 3 357.9 nm 4 4.1 0.8 m 4.2 40m
2、m 4.3 25mm 4.4 0 3L/min 0 10L/min 4.5 50ml 4.6 4.7 10ml 4.8 5 5.1 20 1.67g/ml 5.2 20 1.42g/ml 5.3 100ml 900ml 5.4 0.16mol/L 10ml 990ml 5.5 0.2828g 105 C 2h 1ml 100ml 1.0mg/ml 10.0g/ml 6 GBZ 159 6.1 5L/min 15min 6.2 1L/min 2 8h 6.3 1L/min 2 8h 7 7.1 7.2 5ml 160 C 10.0ml 7.3 6 1 0.0 1.0 2.0 3.0 4.0 5.
3、0ml 5ml 10.0ml 0.0 1.0 2.0 3.0 4.0 5.0 g/ml 357.9nm 3 ( g/ml) 7.4 ( g/ml) 8 8.1 1 2 93 P V o = V 1 273 + t 101.3 Vo L V L t P kPa 8.2 2 1 0 c C = 2 V o C mg/m 3 10 ml c g/ml Vo L 8.3 GBZ 159 9 9.1 0.1 g/ml 0.013 mg/m 3 ( 75L ) 0.1 10 g/ml 1 9.2 95 9.3 200 C 160 C 95 9.4 3ml 100g/L 1 100g/L 1+2 10ml
4、1000 g Cu 2+ Ca 2+ Co 2+ Mo 6+ Ni 2+ SiO 3 2- Al 3+ Fe 3+ Zn 2+ 200 g Mn 2+ Pb 2+ 10 550nm 11 11.1 11.2 0 5L/min 11.3 10ml 11.4 12 12.1 20 1.84g/ml 12.2 4.5mol/L 100ml 300ml 12.3 0.25g C 6 H 5 NH NH 2 CO 100ml 15d 12.4 0.2828g 105C 2h 100ml 1.00mg/ml 10.0 g/ml 13 GBZ 159 10.0ml 3L/min 15min 14 14.1
5、10.0ml 14.2 3 5.0ml 5.0ml 14.3 6 0.0 0.10 0.20 0.40 0.60 0.80 1.00ml 10.0ml 0.0 1.0 2.0 4.0 6.0 8.0 10.0 g 0.2ml 1.5ml 15min 550nm 3 g 14.4 ( g) 15 15.1 1 15.2 3 2 m C = 3 V o C mg/ m 3 m g Vo L 15.3 GBZ 159 16 16.1 0.05 g/ml 0.01mg/m 3( 45L ) 0.05 1.0 g/ml 1.4 4.7 16.2 95 16.3 15min90min15 30min 16
6、.4 0.05 0.3mol/L 0.2mol/L 16.5 Fe 3+ Cu 2+ Mo 2+ Cd 2+ Cr 3+ 17 18 18.1 0.8m 10min 10min1min 18.2 40mm 18.3 25mm 18.4 0 5L/min 18.5 10ml 18.6 18.7 19 19.1 20 1.84g/ml 19.2 50g/L 50g/L 19.3 4.5mol/L 100ml 300ml 19.4 40g/L 19.5 40g/L 19.6 0.25g C 6 H 5 NH NH 2 CO 100ml 15d 19.7 0.2828g 105 C 2h 1ml 10
7、0ml 1.0mg/ml 10.0 g/ml 20 GBZ 159 20.1 3L/min 15min 20.2 1L/min 2 8h 20.3 1L/min 2 8h 2 3d 21 21.1 21.2 10.0ml 30min 5.0ml 21.3 6 0.0 0.10 0.20 0.40 0.60 0.80 1.00ml 10.0ml 0.0 1.0 2.0 4.0 6.0 8.0 10.0 g 0.2ml 1.5ml 15min 550nm 3 g 21.4 21.4.1 10.0ml ( g) 21.4.2 30min 10.0ml ( g) 22 22.1 1 22.2 4 2 m C = 4 V o C mg/m 3 m g Vo L 22.3 GBZ 159 23 23.1 0.05 g/ml 0.01mg/ m 3( 45L ) 0.05 1.0 g/ml 1.4 4.7 23.2 95 96 23.3 15min 90min 15 30min 23.4 Fe 3+ Cu 2+ Mo 2+ Cd 2+
