Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, China.
Environmental Monitoring and Analysis, Shihezi University, Shihezi, 832003, China.
Environ Sci Pollut Res Int. 2018 Sep;25(25):25486-25495. doi: 10.1007/s11356-018-2624-8. Epub 2018 Jun 28.
The presence of perfluoroalkyl acids (PFAAs) in animal foods is worldwide, and their fate and spatial distribution in Xinjiang are not well understood. In this study, beef muscle and liver collected from five major cities in southern Xinjiang were analyzed (n = 70) for 13 PFAAs using an ion-pairing method combined with HPLC-MS/MS. Overall, PFAA contamination was widespread, exceeding 50% of samples with concentrations ranged from below the limits of detection to 6.118 ng/g. Perfluorooctane sulfonate, perfluorooctanoic acid, and perfluoroundecanoic acid were the predominant PFAAs of ten detected compounds, with maximum concentrations in Korla liver samples of 2.543, 0.856, and 1.386 ng/g, respectively. When comparing the five cities, the highest levels and detection frequencies were observed in samples from Korla (muscle, 0.013 ng/g; liver, 3.336 ng/g), followed by Yanqi, Akesu, Kashgar, and Hotan. The different pollution patterns and distribution profiles of PFAAs among cities were significantly related to local economy and geographical conditions. In addition, the dietary intake assessments for PFAAs showed that samples originating from Korla had the greatest impact on human health, but the total hazard ratio was 0.814 × 10, which is far less than 1, indicating that consumption of beef muscle and liver poses no immediate harm to local residents.
全氟烷基酸 (PFAAs) 存在于动物食品中，在全球范围内都有发现，但其在新疆的赋存状态和空间分布尚不清楚。本研究采用离子对法结合高效液相色谱-串联质谱法，对新疆南部五个主要城市采集的 70 份牛肉肌肉和肝脏样本中的 13 种 PFAAs 进行了分析。总体而言，PFAAs 污染广泛，超过 50%的样本浓度范围从检测限以下到 6.118ng/g。全氟辛烷磺酸、全氟辛酸和全氟壬酸是十种检出化合物中的主要 PFAAs，其中 Korla 肝脏样本中的浓度最高，分别为 2.543、0.856 和 1.386ng/g。在比较五个城市时，Korla 市的样本中观察到最高的浓度和检出频率（肌肉为 0.013ng/g，肝脏为 3.336ng/g），其次是焉耆、阿克苏、喀什和和田。不同城市之间 PFAAs 的污染模式和分布特征与当地经济和地理条件显著相关。此外，对 PFAAs 的膳食摄入评估表明，来自 Korla 的样本对人体健康的影响最大，但总危害比为 0.814×10，远小于 1，表明食用牛肉肌肉和肝脏不会对当地居民造成即时危害。
