ISSN:
1618-2650
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary A FIA method is proposed for the determination of non-ionic surfactants, applying spectrophotometric detection. The method is based on the formation of a “surfactant-K+-picrate” adduct and subsequent extraction into 1,2-dichloroethane. The method can handle samples containing large excesses of ionic and amphoteric surfactants, which are retained on ion-exchange columns inserted in the flow system. Beer's law is obeyed at 380 nm in the 0.02–1.2 mg·l−1 range for Triton-type non-ionic surfactants (X-100, X-405 and WR-1339). Relative standard deviation (n=10) is 0.3% at the 0.5 mg·l−1 level. The method has been applied to several samples and its applicability evaluated by ANOVA statistical comparison with two other methods.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00322217
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