论文部分内容阅读
目的监测长沙市市售生鲜食品中主要类雌激素(ECs)的含量,分析不同ECs含量间的关联及其在食品种类间的分布特点,为食品中ECs污染的溯源及危害控制提供基础。方法采用分层抽样方法收集食品样品172份,样品经预处理后用LC-MS/MS法同步检测壬基酚、双酚A、炔雌醇和雌二醇的含量。运用Spearman相关性分析探讨不同ECs含量间的关联,运用对应分析法探索不同ECs在各类食品中的倾向性污染特点。结果各类食品均有不同程度的目标ECs检出,172份样品的ECs检出率顺序为壬基酚94.8%(163/172)>双酚A 84.3%(145/172)>雌二醇78.5%(135/172)>炔雌醇56.4%(97/172),其中在蔬菜中的含量最高。此外,Spearman相关及对应分析结果表明双酚A与壬基酚及炔雌醇的含量呈正相关关系(P<0.05),且不同食品中主要污染的ECs种类存在差异,其中炔雌醇对谷类的污染最为严重,双酚A对水果的污染最为严重。结论单一ECs组分的含量均低于食品允许限量标准,不同ECs在食品中都有检出,且不同种类食品倾向性污染的ECs种类存在差异。
Objective To monitor the content of major estrogens (ECs) in commercial fresh food in Changsha, analyze the correlation among different ECs content and their distribution characteristics among food species, and provide the basis for the traceability and hazard control of ECs in food. Methods 172 samples of food samples were collected by stratified sampling method. The contents of nonylphenol, bisphenol A, ethinylestradiol and estradiol were detected synchronously by LC-MS / MS after pretreatment. Using Spearman correlation analysis to explore the correlation between different ECs content, using corresponding analysis to explore the different ECs in various types of food in the tendency of pollution characteristics. Results The detection rate of ECs in 172 samples was 94.8% (163/172) for all kinds of food, 84.3% (145/172) for bisphenol A, and 78.5% for estradiol % (135/172)> ethinyl estradiol 56.4% (97/172), of which the highest content in vegetables. In addition, Spearman correlation analysis showed that the content of bisphenol A was positively correlated with nonylphenol and ethinylestradiol (P <0.05), and there were differences in the types of ECs that were the main pollutants in different foods. Among them, The most serious pollution, bisphenol A is the most serious pollution of fruits. Conclusion The content of single ECs is lower than the allowable limit of food. Different ECs are detected in food, and the ECs of different kinds of food tend to be different.