Document Detail

Investigation of the fate of trifluralin in shrimp.
MedLine Citation:
PMID:  23339341     Owner:  NLM     Status:  Publisher    
Juvenile Pacific white shrimp (Litopenaeus vannamei) were exposed to trifluralin at 0.1 and 0.01 mg•L-1 for 72 hours under controlled conditions. Samples of shrimp and tank water were collected at intervals up to 48 days after exposure. Analysis of the shrimp tissues by Gas Chromatography-Mass Spectrometry (GC-MS), and ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC-qToF-MS) in combination with profiling and metabolite ID software (Agilent MET-ID and Mass Profiler Professional) detected the presence of parent trifluralin together with two main transformation products (TPs), 2-ethyl-7-nitro-5-(trifluoromethyl)benzimidazole (TP1) and 2-amino-6-nitro-4-(trifluoromethyl)phenyl)propylamine (TP2). The highest concentration of trifluralin, determined by GC-MS was 120 µg•kg-1 at zero day withdrawal. Residues of trifluralin (CCα= 0.25 µg•kg-1, CCβ=0.42 µg•kg-1) were detectable for up to 7 days after exposure. Similarly, the highest concentrations of TP1 and TP 2, determined by Liquid Chromatography- Mass Spectrometry/Mass Spectrometry (LC-MS/MS) were 14 and 18 µg•kg-1 respectively. Residues of TP1 (CCα= 0.05 µg•kg-1, CCβ=0.09 µg•kg-1) and TP2 (CCα= 0.1 µg•kg-1, CCβ = 0.17 µg•kg-1) were detectable for up to 4 and 24 withdrawal days respectively.
Danny Chan; Richard J Fussell; Mike T Hetmanski; Chris J Sinclair; Jack F Kay; Andrew Grant; Matthew Sharman
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-22
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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