Analysis of pesticide gas cartridges.
Charcoal and sodium nitrate, the active ingredients in pesticide gas cartridges, are quantified via carbon analysis and ion chromatography, respectively. Linearity was excellent (R(2) > 0.995) over a range consisting of 50-150% of the target concentration for both ingredients. The coefficient of variation for the replicate analyses of gas cartridges over multiple days was <4% for both analytes. Using the results from the analysis of two batches of gas cartridges, theoretical populations were modeled and used to determine practical sampling strategies to support a quality control program for a gas cartridge manufacturing operation. This modeling indicates that the analysis of three cartridges from each of five different lots would produce mean values for both active ingredients that are within 5% of the true mean >99% of the time.
Johnston
J J
JJ
APHIS/WS/National Wildlife Research Center, U.S. Department of Agriculture, 4101 LaPorte Avenue, Fort Collins, Colorado 80521, USA.
Furcolow
C A
CA
Griffin
D G
DG
Stahl
R S
RS
Eisemann
J D
JD
D002273:Carcinogens / Q000032:analysis; D002606:Charcoal / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods; D009566:Nitrates / Q000032:analysis*; D011786:Quality Control; D015203:Reproducibility of Results
D002273:Carcinogens; D009566:Nitrates; D002606:Charcoal; C031618:sodium nitrate