Department of Physical, Earth and Environmental Sciences, University of Siena, Via P.A. Mattioli 4, 53100 Siena, Italy.
Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Lientur 1457, Concepción, Chile; RECETOX (Research Center for Toxic Compounds in the Environment), Masaryk University, Brno, Czech Republic.
Mar Pollut Bull. 2020 Mar;152:110881. doi: 10.1016/j.marpolbul.2019.110881. Epub 2020 Feb 17.
In this study, we characterized plastic debris (PD) found on beaches from Concepción Bay in central Chile during spring 2017 and summer 2018. The identification of polymers was carried out using FT-IR. Persistent organic pollutants (POPs) were extracted with hexane using an ultrasonic bath and further quantified through GC-MS. The highest abundance of PD was obtained during the summer (4.1 ± 3.7 items/m), with the most common size range between 2.5 and 10 cm (42%) and the most frequent shape were plastic fragments (44%). FT-IR analysis showed that polypropylene was the most recurrent plastic polymer found. The ∑10PBDEs ranged from 2.1 to 1300 ng/g in spring 2017 and 392 to 3177 ng/g in summer 2018. ∑7PCBs ranged from 0.9 to 93 ng/g during the spring 2017 and 0.3 to 4.5 ng/g for summer 2018. This study is the first with information on POPs occurrence in the plastic debris of central Chile.
在这项研究中，我们对智利中部康塞普西翁湾（Concepción Bay）海滩上的塑料碎片（PD）进行了特征描述，这些碎片是在 2017 年春季和 2018 年夏季采集的。使用傅里叶变换红外光谱（FT-IR）对聚合物进行了鉴定。使用超声浴用己烷提取持久性有机污染物（POPs），并用气相色谱-质谱法（GC-MS）进一步定量。夏季获得的 PD 丰度最高（4.1±3.7 件/m），最常见的尺寸范围在 2.5 到 10cm 之间（42%），最常见的形状是塑料碎片（44%）。FT-IR 分析表明，聚丙烯是最常见的塑料聚合物。2017 年春季∑10PBDEs 的浓度范围为 2.1 到 1300ng/g，2018 年夏季为 392 到 3177ng/g。2017 年春季∑7PCBs 的浓度范围为 0.9 到 93ng/g，2018 年夏季为 0.3 到 4.5ng/g。本研究是首次对智利中部塑料碎片中 POPs 存在情况的研究。
