方淑红,彭光垣,印红玲,孙静,叶芝祥.成都饮食中全氟化合物的污染特征及健康风险评估[J].环境科学学报,2019,39(5):1708-1716
成都饮食中全氟化合物的污染特征及健康风险评估
- Pollution characteristics and human health risk of perfluoroalkyl substance exposure through the diet in Chengdu City
- 基金项目：国家自然科学基金（No.21607018）；四川省教育厅科研基金（No.2017Z055）；成都信息工程大学引进人才科研启动项目（No.KYTZ201605）；成都信息工程大学中青年学术带头人科研基金（No.J201714）
- 方淑红
- 成都信息工程大学资源环境学院, 成都 610225
- 彭光垣
- 成都信息工程大学资源环境学院, 成都 610225
- 印红玲
- 成都信息工程大学资源环境学院, 成都 610225
- 孙静
- 成都信息工程大学资源环境学院, 成都 610225
- 叶芝祥
- 成都信息工程大学资源环境学院, 成都 610225
- 摘要：为了解成都市居民通过饮食暴露于全氟化合物（Perfluoroalkyl Substances，PFASs）的情况，本研究通过调查统计成都市居民的主要饮食情况，选取米、蔬菜、牛奶、鸡蛋、鱼和猪肉6类饮食为研究对象，采用超高效液相色谱-串联质谱法对样品中17种PFASs进行检测.结果显示，所有饮食中均检出PFASs，说明PFASs在饮食中普遍存在.鸡蛋中的∑PFASs含量最高，达（155±25.4） ng·g-1（湿重，下同）；白菜的∑PFASs含量最低，仅为（0.101±0.026） ng·g-1.大部分样品中以全氟辛烷羧酸（Perfluroroocantanoic Acid，PFOA）为主，其次为短碳链的全氟羧酸（Perfluoroalkyl Acids，PFCAs）.其中，鸡蛋蛋黄中∑PFASs的含量为（600.0±98.6） ng·g-1，远高于蛋清中的含量（0.606±0.101） ng·g-1，且蛋黄中主要为全氟辛烷磺酸（Perfluorooctane Sulfonate，PFOS）（98.1%）.通过风险评估可以得出，成都市居民对PFOS和PFOA的日摄入量分为85.6 ng·kg-1·d-1和4.38 ng·kg-1·d-1，低于欧盟食品安全局推荐的每日最大摄入量，不会对成都市居民造成即时伤害.
- Abstract：Rice, vegetables, milk, eggs, fish and pork, which are the main dietarty for the general population living in Chengdu, were analyzed in the present study to reveal the risk of perfluoroalkyl substances (PFASs) exposure in Chengdu. Seventeen PFASs were analyzed by the ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). The results showed that all of the PFASs were detected in diet samples, suggesting widespread of PFASs in diets. In addition, eggs displayed the highest ∑PFAS levels, and reached to(155±25.4) ng·g-1 (wet weight, the same in the follows), while Chinese cabbage showed the lowest values (0.101±0.026) ng·g-1. Perfluroroocantanoic acid and short chained perfluoroalkyl acids were the predominant PFASs in most of the diet. Furthermore, ∑PFASs concentrations in egg yolk (600.0±98.6) ng·g-1 were extremely higher than that in eggs white (0.606±0.101) ng·g-1, and perfluorooctane sulfonate was the most important one in egg yolk (98.1%). Estimated daily intake via foods (EDI) showed that the EDI value of PFOS and PFOA were 85.6 ng·kg-1·d-1 and 4.38 ng·kg-1·d-1 respectively, lower than the tolerable daily intakes recommended by European Food Safety Authority, indicating that there was no instant health risk to local residents.
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