Document Detail

Sorption of sulfuryl fluoride by food commodities.
MedLine Citation:
PMID:  18386851     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The use of sulfuryl fluoride, a structural fumigant for termite and woodborer control, has recently been expanded to treating stored food commodities and food facilities. There is, however, a lack of data on the sorption of sulfuryl fluoride by food commodities. Knowledge about sorption is important in the context of effective treatment and residues. RESULTS: When sulfuryl fluoride was applied at a dose of 50 g m(-3) to various food commodities (total 68) with 300 g per replicate in 0.75 L gas wash bottles (fumigation chambers) at 25 +/- 1 degrees C, in most cases (81%) the gas concentrations in the free space of the commodities exceeded 50 g m(-3) (range 51-80 g m(-3)) at the end of 24 h exposure. In chambers without the substrate, an average concentration of 49.7 g m(-3) was recorded. About 54% of the commodities showed low-level ( < or = 25%) sorption of sulfuryl fluoride, 34% showed medium-level (26-50%) sorption and only 12% were highly sorptive (>50%). The latter include white oats (terminal gas concentration 17.8 g m(-3)), some of the decorticated split pulses (24.0-29.3 g m(-3)), chickpea flour (26.3 g m(-3)), dried ginger (29.0 g m(-3)), refined wheat flour (30.3 g m(-3)) and coriander powder (40.5 g m(-3)). In unfumigated control commodities, owing to interfering volatiles, Fumiscope readings in the range 0-13 were noted. CONCLUSION: Sulfuryl fluoride has the advantage of a low or moderate level of sorption with the majority of the food commodities.
Venkata-rao Sriranjini; Somiahnadar Rajendran
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pest management science     Volume:  64     ISSN:  1526-498X     ISO Abbreviation:  Pest Manag. Sci.     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-06-24     Completed Date:  2008-09-15     Revised Date:  2010-03-23    
Medline Journal Info:
Nlm Unique ID:  100898744     Medline TA:  Pest Manag Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  873-9     Citation Subset:  IM    
Food Protectants and Infestation Control Department, Central Food Technological Research Institute, Mysore 570 020, India.
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MeSH Terms
Cereals / chemistry
Flour / analysis
Food Contamination / analysis*
Insect Control
Insecticides / analysis*
Pesticide Residues / analysis*
Seeds / chemistry
Spices / analysis
Sulfinic Acids / analysis*
Reg. No./Substance:
0/Insecticides; 0/Pesticide Residues; 0/Sulfinic Acids; 2699-79-8/sulfuryl fluoride

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