On January 16, 10 impingers
were placed in a northsouth orientation along Van Eegan Road (Figure 1).
The samples of BHA solution from the impingers
were extracted three times with hexane in a separatory funnel to transfer the oximes in the hexane phase while the water-soluble compounds remained in the aqueous phase.
Ground truth samples are normally collected using impingers
The method of capturing acetaldehyde, propionaldehyde, and acrolein using strictly water in chilled impingers
was not suitable; however, the compounds were still recovered in the sampling procedure.
It should be noted, however, that the use of impingers
does have limitations.
Dual sampling trains each containing three impingers
collected gas from a laboratory lumber dry kiln.
Three glass impingers
were each filled with 30 mL of brain heart infusion broth (BD Biosciences).
were in a stirred glycol solution maintained at -1[degrees]C.
Effect of sampling time on the collection efficiency of all-glass impingers
The sampling methods were changed so that the performance of the absorber was measured using a total hydrocarbon analyzer and two chilled impinger
are designed to operate by drawing aerosols through an inlet tube that is curved to simulate the nasal passage.
2002), additional emissions were reported with a list of approximately 70 compounds that were detected by capturing the compounds in impingers
and on adsorbants during drying at 100[degrees]C.