Air Monitoring: New Advances in Sampling and Detection
Table 8
Sampling and analytical conditions.
TD conditions
GC conditions
MS conditions
Configuration: TD-100 for automated tube desorption (Markes International Ltd) Flow path temperature: 150°C Cold trap: air toxics analyser type trap Trapping temperature: 25°C Cold trap desorption: 300°C for 3 min (10 : 1 split) Trap heating rate: 40°C/s
Column: 60 m × 0.32 mm × 1.8 μm, 624 type phase Oven: 40°C (5 min), 5°C/min to 230°C (0 min) Constant pressure: 10 psi
Source temperature: 230°C Quadrupole temperature: 150°C Transfer line temperature: 280°C Scan range: m/z 33–350
Sampling: Sample 1 (black trace): 1 L of sample pumped onto multi-bed tubes using a constant-flow pump at 100 mL/min for 10 min; Sample 2 (blue trace): 1 L sampled onto a multi-bed tube, using ten pulls of a piston pump set at 100 mL per pull.