Cincinelli Alessandra, Scopetani Costanza, Chelazzi David, Lombardini Emilia, Martellini Tania, Katsoyiannis Athanasios, Fossi Maria Cristina, Corsolini Simonetta
Department of Chemistry "Ugo Schiff", University of Florence, 50019, Sesto Fiorentino, Florence, Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), 50019, Sesto Fiorentino, Florence, Italy.
Department of Chemistry "Ugo Schiff", University of Florence, 50019, Sesto Fiorentino, Florence, Italy.
Chemosphere. 2017 May;175:391-400. doi: 10.1016/j.chemosphere.2017.02.024. Epub 2017 Feb 7.
This is the first survey to investigate the occurrence and extent of microplastic (MPs) contamination in sub surface waters collected near-shore and off-shore the coastal area of the Ross Sea (Antarctica). Moreover, a non-invasive method to analyze MPs, consisting in filtration after water sampling and analysis of the dried filter through Fourier Transform Infrared Spectroscopy (FTIR) 2D Imaging, using an FPA detector, was proposed. The non-invasiveness of analytical set-up reduces potential bias and allows subsequent analysis of the filter sample for determination of other classes of contaminants. MPs ranged from 0.0032 to 1.18 particle per m of seawater, with a mean value of 0.17 ± 0.34 particle m, showing concentrations lower than those found in the oceans worldwide. MPs included fragments (mean 71.9 ± 21.6%), fibers (mean 12.7 ± 14.3%), and others (mean 15.4 ± 12.8%). The presence of different types of MPs was confirmed by FTIR spectroscopy, with predominant abundance of polyethylene and polypropylene. The potential environmental impact arising from scientific activities, such as marine activities for scientific purposes, and from the sewage treatment plant, was also evidenced.
这是首次对罗斯海（南极洲）沿海近岸和近海采集的次表层水体中微塑料（MPs）污染的发生情况和程度进行调查。此外，还提出了一种分析微塑料的非侵入性方法，即在水样采集后进行过滤，并使用FPA探测器通过傅里叶变换红外光谱（FTIR）二维成像对干燥后的滤膜进行分析。分析装置的非侵入性减少了潜在偏差，并允许随后对滤膜样本进行分析以确定其他类别的污染物。微塑料的含量范围为每立方米海水0.0032至1.18个颗粒，平均值为0.17±0.34个颗粒/立方米，显示出的浓度低于全球海洋中的浓度。微塑料包括碎片（平均71.9±21.6%）、纤维（平均12.7±14.3%）和其他（平均15.4±12.8%）。通过FTIR光谱证实了不同类型微塑料的存在，其中聚乙烯和聚丙烯占主导。还证明了科学活动（如海洋科学活动）和污水处理厂产生的潜在环境影响。
