Multiresidue procedures for the determination of chlorinated dibenzodioxins and dibenzofurans in a variety of foods using capillary gas chromatography-electron-capture detection.
Multiresidue digestion-extraction procedures for the determination of chlorinated dioxins and furans in a wide variety of products are presented. Procedure selection is dependent upon the residue(s) of interest, and on the fat content of the product. Additional cleanup is accomplished using column chromatography and a Florisil trap. The separation of residues is achieved by fraction collection off of two high-performance liquid chromatographic systems. Capillary gas chromatography employing electron-capture detection is used for quantitation. The extracts are suitable for gas chromatography mass spectrometry or gas chromatography with Hall electrolytic conductivity detection. Results of analysis, recovery data, and interlaboratory comparisons are presented. Spike recoveries will typically average 90% +/- 10%.
Jasinski
J S
JS
U.S. Department of Health and Human Services, Food and Drug Administration, Detroit, MI 48207.
D001572:Benzofurans / Q000032:analysis* / Q000378:metabolism; D002713:Chlorine / Q000378:metabolism*; D002849:Chromatography, Gas / Q000379:methods*; D002851:Chromatography, High Pressure Liquid; D004147:Dioxins / Q000032:analysis* / Q000378:metabolism; D005504:Food Analysis / Q000379:methods*; D007536:Isomerism; D008752:Methylene Chloride; D011188:Potassium
D001572:Benzofurans; D004147:Dioxins; D002713:Chlorine; D008752:Methylene Chloride; C023614:dibenzofuran; D011188:Potassium