US EPA

2211178 

Technical Report 

The use of Amberlite XAD-2 resin for the quantitative recovery of fenitrothion from water--a preservation technique 

Berkane, K; Caissie, GE; Mallet, VN 

1977 

PESTAB/77/2560 

Chromatogr 

2 

PESTAB. The usefulness of Amberlite macroreticular resins for quantitative recovery of various organic contaminants from environmental water has been investigated. A multiresidue technique has been developed using these resins to extract organochlorine pesticides and polychlorinated biphenyls from natural waters. Water samples containing fenitrothion were allowed to percolate down a column of Amberlite XAD-2 resin, then the column was eluted with an appropriate organic solvent and the fenitrothion retained was determined by TLC analysis or GLC. The recovery of fenitrothion from distilled water averaged 94% according to in situ fluorometry; the results were confirmed by GLC in experiments with natural water. Fenitrothion degradation was not important within 10 days of the fluorometry experiment, and no degradation was apparent by GLC over a 5-week period. Thus the fenitrothion was stable on the column and the method can be used as a preservation technique. The water sample containing fenitrothion can be processed in the field, and the column can be eluted and its contents analyzed some time afterwards.