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Simplified fat extraction with sulphuric acid as cleanup procedure for residue determination of chlorinated hydrocarbons in butter
Year:
1978
Authors :
Aharonson, Nadav
;
.
Veierov, Dan
;
.
Volume :
61
Co-Authors:
Veierov, D., Agric. Res. Organ., Pesticide Chem. Residue Res. Lab., Volcani Cent., Bet Dagan, Israel
Aharonson, N., Agric. Res. Organ., Pesticide Chem. Residue Res. Lab., Volcani Cent., Bet Dagan, Israel
Facilitators :
From page:
253
To page:
260
(
Total pages:
8
)
Abstract:
A new cleanup procedure is described for chlorinated hydrocarbon residues in butterfat. The method is based on the dropwise addition of H2SO4 to a fat solution column and continuous removal of the lipids and the acid. The cleanup of 0.25-2.0 g fat requires only 10-40 ml sulfuric acid and 12-17 ml petroleum ether. There is no need for any further cleanup step, solvent evaporation, or centrifugation. The method is easy to standardize and is suitable for automation. At least 30 fat samples can be cleaned up manually by one analyst in one day. Recoveries were complete (>90%) for polychlorinated biphenyl compounds and for 13 chlorinated pesticides of 16 examined. The method was tested on chlorinated hydrocarbon residues in commercial butter and the results were compared with those obtained with the acetonitrile method. The versatility and limitations of the method were investigated by varying the sulfuric acid strength, initial fat solution concentration, and column dimensions.
Note:
Related Files :
butter
chlorinated hydrocarbon
Insecticides, Organochlorine
methodology
Methods
Pesticide Residues
Sulfuric Acids
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
20955
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:40
Scientific Publication
Simplified fat extraction with sulphuric acid as cleanup procedure for residue determination of chlorinated hydrocarbons in butter
61
Veierov, D., Agric. Res. Organ., Pesticide Chem. Residue Res. Lab., Volcani Cent., Bet Dagan, Israel
Aharonson, N., Agric. Res. Organ., Pesticide Chem. Residue Res. Lab., Volcani Cent., Bet Dagan, Israel
Simplified fat extraction with sulphuric acid as cleanup procedure for residue determination of chlorinated hydrocarbons in butter
A new cleanup procedure is described for chlorinated hydrocarbon residues in butterfat. The method is based on the dropwise addition of H2SO4 to a fat solution column and continuous removal of the lipids and the acid. The cleanup of 0.25-2.0 g fat requires only 10-40 ml sulfuric acid and 12-17 ml petroleum ether. There is no need for any further cleanup step, solvent evaporation, or centrifugation. The method is easy to standardize and is suitable for automation. At least 30 fat samples can be cleaned up manually by one analyst in one day. Recoveries were complete (>90%) for polychlorinated biphenyl compounds and for 13 chlorinated pesticides of 16 examined. The method was tested on chlorinated hydrocarbon residues in commercial butter and the results were compared with those obtained with the acetonitrile method. The versatility and limitations of the method were investigated by varying the sulfuric acid strength, initial fat solution concentration, and column dimensions.
Scientific Publication
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