US EPA

3070928 

Journal Article 

Determination of phthalate esters in teas and tea infusions by gas chromatography-mass spectrometry 

Du, L; Ma, L; Qiao, Y; Lu, Y; Xiao, D 

2016 

Yes 

Food Chemistry
ISSN: 0308-8146
EISSN: 1873-7072 

ELSEVIER SCI LTD 

OXFORD 

197 Pt B 

1200-1206 

English 

26675858 

10.1016/j.foodchem.2015.11.082 

WOS:000366987500021 

Phthalate esters (PAEs), a group of environmental pollutants which are carcinogenic to human body, have been detected in teas. In this work, five PAEs in teas and tea infusions were quantitatively determined by a modified simultaneous distillation extraction (SDE) coupled with gas chromatography-mass spectrometry. After the optimization of SDE, the proposed method afforded a wide range of linearity and high linear regression coefficients with the limits of detection range of 0.24-3.72μg/kg. The average recoveries were 79.83-116.67% for tea samples and 78.22-101.64% for tea infusions with all the relative standard deviations below 20%. The total content of five PAEs in teas was 1.135-3.734mg/kg and the total dissolving ratio of five PAEs from tea to infusion was 19.05-28.07% for the selected tea samples. The risk assessment result of all the selected tea samples demonstrated that the population with the habit of drinking tea won't cause risk to human health. 

Tea; Tea infusion; Phthalate esters; Simultaneous distillation extraction; Gas chromatography-mass spectrometry