Simple and Sensitive Determination of <i>o</i>-Phenylphenol in Citrus Fruits Using Gas Chromatography with Atomic Emission or Mass Spectrometric Detection
Nina Kolbe, Jan T. Andersson
Journal of Agricultural and Food Chemistry
Abstract
In this work, a simple and sensitive method for the analysis of the pesticide o-phenylphenol (OPP) on citrus fruits was developed. OPP is extracted with dichloromethane by ultrasonication and derivatized with ferrocenecarboxylic acid chloride. Using ferrocene as a label, residues of OPP are determined by gas chromatography with atomic emission detection in the iron selective mode or with mass spectrometric detection. Sample cleanup is simple and rapid and merely involves a removal of excess reagent on an alumina minicolumn. The method detection limit is 2 ng of OPP/g of fruit, and recoveries from lemon samples fortified at levels of 35 and 140 ng/g are 101 and 106%, respectively. The citrus fruits analyzed (oranges, grapefruits, lemons) contained between 60 ng/g and 0.37 microg/g OPP (RSD = 8-13%), and the results were in good agreement with results obtained when OPP was analyzed using an established HPLC-FLD method. Several alcohols could also be identified in the fruit peel.
Extracted Claims
10 claims extracted from this paper into the knowledge graph
determination of OPP residues is performed by gas chromatography with atomic emission detection in the iron selective mode or with mass spectrometric detection
“Using ferrocene as a label, residues of OPP are determined by gas chromatography with atomic emission detection in the iron selective mode or with mass spectrometric detection.”
results obtained using the developed method were in good agreement with results obtained using an established HPLC-FLD method
“The results were in good agreement with results obtained when OPP was analyzed using an established HPLC-FLD method.”
method detection limit is 2 ng of OPP/g of fruit
“The method detection limit is 2 ng of OPP/g of fruit.”