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- W2354867314 abstract "Objective To select appropriate gas chromatography-mass spectrometry conditions,and establish a method for simultaneous determination of 16 phthalic acid esters in cooking oil by using gas chromatography-tandem mass spectrometry( GC-MS/MS),so as to understand the current status of phthalate esters residues in production and sale of cooking oil in Anyang city. Methods The phthalic acid esters in samples were extracted by acetonitrile,purified with silica / PSA column,concentrated by liquid nitrogen and then determined by GC / MS / MS using external standard method for quantitative anallysis. Results The 16 phthalic acid esters were separated completely within 23 min. The calibration curves of 16 phthalic acid esters were linear within the range of 5 ng / ml ~ 5000 ng / ml( r2 0. 99). The recoveries were 71. 60% ~ 109. 3%. The relative standard deviations( RSD) of the method was less than 10%,and the limit of determination( LOD) was 0. 01 ng / ml ~ 0. 45 ng / ml. Conclusion The 16 kinds of phthalic acid esters were separated well by choosing suitable gas chromatographic conditions. Application of secondary ion of characteristic ion in GC-MS / MS detection can reduce the interference,thus avoiding the false positive. The method is simple,accurate and sensitive. It is suitable for analysis of phthalic acid esters in cooking oil." @default.
- W2354867314 created "2016-06-24" @default.
- W2354867314 creator A5050224837 @default.
- W2354867314 date "2014-01-01" @default.
- W2354867314 modified "2023-09-23" @default.
- W2354867314 title "Determination of 16 phthalic acid esters in cooking oil by using gas chromatography /tandem mass spectrometry" @default.
- W2354867314 hasPublicationYear "2014" @default.
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