ISSN:
1612-1112
Keywords:
Column liquid chromatography
;
Plant tissues
;
Linear alkylbenzene sulfonate (LAS)
;
Rice
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary A new method has been developed for the extraction and determination of linear alkylbenzene sulfonate (LAS) in plant tissues (rice stems and leaves). It consists of methanol-ultrasonic extraction followed by clean-up with aluminum oxide, enrichment with C18 solid-phase extraction column and determination by HPLC. Both efficiency and accurracy of the overall method were high, i.e. mean recovery of: 89% (84 to 93% for LAS concentrations ranging from 1 to 100 mg kg−1) and repeatability of: 3% relative standard deviation for 6 replicate analyses. With a 2 g sample for analysis, LAS levels of 0.5 mg kg−1 in plants could be detected with the proposed method. Further advantages were: it was less time consuming (1 h for extraction), less solvent consumption, and smaller samples (2 to 3 g) required when compared with Soxhlet extraction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02466320
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