Table 7.
Study of collection efficiency of DMSO-reagent solution in impingers
| Quantity of OPA applied to U-tube |
Length of PTFE tubing before first impinger |
Quantity of OPA found in first impinger |
Length of PTFE tubing after first impinger |
Quantity of OPA found in second sampler |
|---|---|---|---|---|
| 20 µg | 19 cm | 17.8 µg | 0 cm | 0.11 µg (S10 LpDNPH sampler) |
| 20 µg | 15 cm | 18.4 µg | 15 cm | (Not detected) (impinger) |