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. Author manuscript; available in PMC: 2015 Sep 4.
Published in final edited form as: Anal Methods. 2014 Feb 25;6(8):2592–2607. doi: 10.1039/C3AY42085J

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)