GBZ T 160.20-2004 工作场所空气有毒物质测定 钽及其化合物.pdf

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1、C 52 GBZ GBZ/T 160.20 2004 Methods for determination of tantalum and its compounds in the air of workplace 2004 5 21 2004 12 1 GBZ/T 160.20 2004 GBZ 1 GBZ 2 Ditantalium pentaoxide 2004 12 1 GBZ/T 160.20 2004 1 2 GBZ 159 3 4 4.1 0.8 m 4.2 40mm 4.3 25mm 4.4 0 3L/min 0 10L/min 4.5 4.6 4.7 25ml 4.8 5 5.

2、1 5.2 A 100g/L 5.3 B 50g/L 5.4 A C(H 2 SO 4 ) 0.5mol/L 26.6ml 1000ml 5.5 B C(H 2 SO 4 ) 0.25mol/L 13.3ml 1000ml 5.6 42g/L 5.7 5.0g/L 5.8 5.9 0.1221g (99.99 ) 3g 10ml B B 100ml 1.0mg/ml 10.0 g/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 1.5g 10ml B 100ml 4.0ml 7.3 : 6 0.00

3、 0.10 0.30 0.50 1.00 2.00ml 4.0ml 0.0 1.0 3.0 5.0 10.0 20.0 g 1ml A A 3 5min 3ml 5.0ml 1min 600nm 3 20min ( 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 25 m C = 2 Vo C 2.442 mg/m 3 m g Vo L 8.3 GBZ 159 9 9.1 0.11 g/ml 0.15mg/m 3 75L 0.11 5 g/ml 2.8 6.8 9.2 98.2 100.1 9.3 9.4 20mg 10mg1mg 0.5mg 0.1mg0.02mg