title: Analysis of pesticide gas cartridges.
abstract: 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.
authors.affiliation: APHIS/WS/National Wildlife Research Center, U.S. Department of Agriculture, 4101 LaPorte Avenue, Fort Collins, Colorado 80521, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Johnston
authors.forename: C A
authors.initials: CA
authors.lastname: Furcolow
authors.forename: D G
authors.initials: DG
authors.lastname: Griffin
authors.forename: R S
authors.initials: RS
authors.lastname: Stahl
authors.forename: J D
authors.initials: JD
authors.lastname: Eisemann
mesh_terms: D002273:Carcinogens / Q000032:analysis; D002606:Charcoal / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods; D009566:Nitrates / Q000032:analysis*; D011786:Quality Control; D015203:Reproducibility of Results
chemical_list: D002273:Carcinogens; D009566:Nitrates; D002606:Charcoal; C031618:sodium nitrate