1、C 52 GBZ GBZ/T 160.23 2004 Methods for determination of tungsten and its compounds in the air of workplace 2004 5 21 2004 121 GBZ/T 160.23 2004 GBZ 1 GBZ 2 Tungsten Tungsten carbide 2004 12 1 GB/T 16103 1995 1995 GBZ/T 160.23 2004 1 2 GBZ 159 3 400nm 4 4.1 0.8 m 4.2 40mm 4.3 25mm 4.4 0 3L/min 0 10L/
2、min 4.5 50ml 4.6 4.7 100ml 4.8 25ml 4.9 5 5.1 20 1.42g/ml 5.2 20 1.18g/ml 5.3 20 1.67g/ml 5.4 20 1.84g/ml 5.5 25 1.68g/ml 5.6 100ml 900ml 5.7 100ml 500ml 300ml 1000ml 5.8 5g/L 0.5g 100ml 6mol/L 5.9 250g/L 5.10 15g/L 3mol/L 10 5.11 0.1736g Na 2 WO 4 H 2 O 100ml 1.0mg/ml 6 GBZ 159 6.1 5L/min 15min 6.2
3、 1L/min 2 8h 6.3 1L/min 2 8h 7 7.1 7.2 2ml 20ml 100ml 10.0ml 7.3 6 0.00 0.20 0.40 0.60 0.80 1.00ml 1.0ml 0.0 200.0 400.0 600.0 800.0 1000.0 g 1 10.0ml 5ml 2ml 0.5ml 400nm 3 g 7.4 ( g) 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 m C = 2 Vo C mg/m 3 m g Vo L 9 9.1 0.3 g/ml 0.4mg/m 3 75L 0.3 10 g/ml 1.3 3.4 9.2 92 100 9.3 200 g 100 g 50 g 20 g 9.4
