A new analytical methodology, based on liquid chromatography with fluorescence detection (LC-FD), after
extraction, enzymatic hydrolysis, and solid-phase extraction (SPE) through Oasis HLB cartridges, was developed and validated
for the simultaneous determination of three monohydroxy derivatives of polycyclic aromatic hydrocarbons (PAHs). The
optimized analytical method is sensitive, accurate, and precise, with recoveries between 62 and 110% and limits of detection of
227, 9, and 45 ng/g for 1-hydroxynaphthalene, 2-hydroxyfluorene, and 1-hydroxypyrene, respectively. Their levels were estimated
in different cephalopod matrices (edible tissues and hemolymph). The methodology was applied to samples of the major
cephalopod species consumed worldwide. Of the 18 samples analyzed, 39% were contaminated with 1-hydroxynaphthalene,
which was the only PAH metabolite detected. Its concentration ranged from 786 to 1145 ng/g. This highly sensitive and specific
method allows the identification and quantitation of PAH metabolites in forthcoming food safety and environmental monitoring
programs.
A new analytical methodology, based on liquid chromatography with fluorescence detection (LC-FD), after
extraction, enzymatic hydrolysis, and solid-phase extraction (SPE) through Oasis HLB cartridges, was developed and validated
for the simultaneous determination of three monohydroxy derivatives of polycyclic aromatic hydrocarbons (PAHs). The
optimized analytical method is sensitive, accurate, and precise, with recoveries between 62 and 110% and limits of detection of
227, 9, and 45 ng/g for 1-hydroxynaphthalene, 2-hydroxyfluorene, and 1-hydroxypyrene, respectively. Their levels were estimated
in different cephalopod matrices (edible tissues and hemolymph). The methodology was applied to samples of the major
cephalopod species consumed worldwide. Of the 18 samples analyzed, 39% were contaminated with 1-hydroxynaphthalene,
which was the only PAH metabolite detected. Its concentration ranged from 786 to 1145 ng/g. This highly sensitive and specific
method allows the identification and quantitation of PAH metabolites in forthcoming food safety and environmental monitoring
programs.
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