Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 386, Issue 5, Pages 1401-1406Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-006-0703-z
Keywords
dibutyl phthalate; determination; hapten; antibody; fluorescence immunoassay
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A novel, sensitive, and specific competitive fluorescence immunoassay has been developed for the quantitative determination of dibutyl phthalate (DBP) using an antibody-coated plate format. Hapten was synthesized in order to produce polyclonal antibodies against dibutyl phthalate. Polyclonal antisera to dibutyl phthalate were generated in rabbits and used to construct the fluorescence immunoassay for measurement of dibutylphthalate. The assay had a detection limit of about 0.02 mu g L-1, a dynamic range of approximately 0.1-300 mu g L-1. Other similar phthalate compounds do not interfere significantly in the analysis using this immunoassay technique, and the cross-reactivity rates were less than 10%. The study demonstrated that the developed antiserum and fluorescence immunoassay procedure can be used to detect dibutyl phthalate in environmental samples such as tap water, river water, drinking water, and leachate from plastic drinking water bottles.
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