title: Interaction between co-solvents and algae in the residue dynamics of fenitrothion.
abstract: Fresh and estuarine water algae maintained in laboratory microcosms simulating river-lake/estuary-bay systems were exposed to 14C-fenitrothion formulated with Atlox and tank mixed with Aerotex or Dowanol (11.5:1.5:1.5 w/v/v). Generally, the tank mix co-solvents determined the amount of uptake and the array of derivatives formed by the algae. Typically, exposed to an Aerotex mix the ratio of ethyl acetate extractable (NP) fraction: ethyl acetate unextractable (P) fraction was as 3.5:1.0, exposed to a Dowanol mix the ratio was as 1.5:1.0. Within any comparable time period, fresh water algae turned over more of the 14C-ring of fenitrothion than the estuarine genera. Turn-over was enhanced when Aerotex was the tank mix co-solvent.
mesh_terms: D001673:Biodegradation, Environmental; D002696:Chlamydomonas / Q000378:metabolism; D002708:Chlorella / Q000378:metabolism; D056890:Eukaryota / Q000378:metabolism*; D005278:Fenitrothion / Q000378:metabolism*; D005618:Fresh Water; D010573:Pesticide Residues / Q000032:analysis; D012623:Seawater; D012997:Solvents; D013997:Time Factors
chemical_list: D010573:Pesticide Residues; D012997:Solvents; D005278:Fenitrothion