Grice Marine Laboratory, College of Charleston, 205 Fort Johnson Rd, Charleston, SC 29412, United States.
Medical University of South Carolina, Department of Obstetrics and Gynecology, 221 Fort Johnson Rd, Charleston, SC 29412, United States.
Mar Pollut Bull. 2019 Mar;140:610-615. doi: 10.1016/j.marpolbul.2019.02.010. Epub 2019 Feb 16.
Per- and polyfluoroalkyl substances (PFAS) are ubiquitous, synthetic anthropogenic chemicals known to infiltrate and persist in biological systems as a result of their stability and bioaccumulation potential. This study investigated 15 PFAS, including short-chain carboxylic and sulfonic acids, and their presence in a threatened herbivore, the West Indian manatee (Trichechus manatus). Seven of the 15 PFAS examined were detected in manatee plasma. Perfluorooctanesulfonic acid (PFOS) (ranging from 0.13 to 166 ng/g ww) and perfluorononanoic acid (PFNA) (ranging from 0.038 to 3.52 ng/g ww) were detected in every manatee plasma sample examined (n = 69), with differing medians across sampling sites in Florida, Crystal River (n = 39), Brevard County (n = 18), Everglades National Park (n = 8), and four samples (n = 4) from Puerto Rico. With an herbivorous diet and long life-span, the manatee provides a new perspective to monitoring PFAS contamination.
全氟和多氟烷基物质(PFAS)无处不在,是一种人工合成的、稳定且具有生物蓄积潜力的人造化学物质,已渗透到生物系统中。本研究调查了 15 种 PFAS,包括短链羧酸和磺酸,以及它们在受威胁的食草动物西印度海牛(Trichechus manatus)中的存在情况。在海牛血浆中检测到了 15 种 PFAS 中的 7 种。在所有被检测的海牛血浆样本中都检测到了全氟辛烷磺酸(PFOS)(范围为 0.13 至 166ng/gww)和全氟壬酸(PFNA)(范围为 0.038 至 3.52ng/gww),佛罗里达州水晶河(n=39)、布雷瓦尔德县(n=18)、大沼泽地国家公园(n=8)和来自波多黎各的 4 个样本(n=4)的检测点之间存在不同的中位数。海牛以草食性饮食和长寿命为特征,为监测 PFAS 污染提供了新的视角。