TY - JOUR
AU1 - Heath, Andrew, B
AU2 - Black, Robert, R
AB - Abstract The sweep co-distillation technique of Storherr et al. was investigated and simplified. Six organochlorine pesticides in animal fats were cleaned up under various distillation conditions as follows: No solvent was used, or solvent injection rates were 1 mL/min or 2 mL/3 min. Distillation tubes of 6.7 and 9.0 mm id diameter were compared. Distillation temperatures were varied from 150 to 300°C The complex condenser of Storherr et al. was compared with a simpler pipet condenser. A U-tube condenser which allows direct introduction onto a Florisil column for secondary cleanup was evaluated. The following modifications to the sweep co-distillation technique resulted: no solvent introduction, distillation temperature 230°C, nitrogen flow rate 600 mL/min, 6.7 mm id distillation tubes with simplified packing, and incorporation of the U-tube condenser. The new technique gave recoveries comparable to those of Storherr et al., but it is faster than most bisolvent partition methods and no large volumes of solvent are required. This content is only available as a PDF. © Journal of the Association of Official Analytical Chemists This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)
TI - Investigation and Simplification of the Sweep Co-Distillation Cleanup of Pesticide Residues in Animal Fats
JF - Journal of AOAC INTERNATIONAL
DO - 10.1093/jaoac/62.4.757
DA - 1979-07-01
UR - https://www.deepdyve.com/lp/oxford-university-press/investigation-and-simplification-of-the-sweep-co-distillation-cleanup-u1u94Qi2Ht
SP - 757
EP - 763
VL - 62
IS - 4
DP - DeepDyve
ER -