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Characterization of petroleum-based plastics and their absorbed trace metals from the sediments of the Marina Beach in Chennai, India
Environmental Sciences Europe ( IF 5.9 ) Pub Date : 2020-08-27 , DOI: 10.1186/s12302-020-00388-5
Thodhal Yoganandham Suman , Wei-Guo Li , Shaji Alif , Valappil Rahman Panangala Faris , Duvvuru Joshua Amarnath , Jun-Guo Ma , De-Sheng Pei

Background

Pollution by marine plastic debris becomes an increasing global concern. Characteristics of petroleum-based plastics pollution and its absorbed metals in Marina Beach, Chennai, in India are not reported yet. In this study, we first characterized the petroleum-based plastic debris and quantified the concentration of arsenic (As), chromium (Cr), copper (Cu), and lead (Pb) in plastics from the Marina Beach.

Results

A total of 2275 samples of the sediments were collected from three different locations across the Marina Beach. Our results showed that plastics debris mainly were three shapes as fiber, sphere, and fragment. The plastic fragments were mechanically eroded and chemically weathered observed by the scanning electron microscope (SEM). Five types of polymers were identified, including low-density polyethylene (LDPE), polyethylene terephthalate (PET), polypropylene (PP), polyamide (PA), and polycarbonate (PC). Their absorbed trace metals, such as Cr, As, Pb, and Cu, were determined by the inductively coupled plasma mass spectrometry (ICP-MS). The level of As was high in most plastics. However, the highest levels of Pb, Cu, and Cr were in the PA, PP, and PA, respectively, implying the adsorption preference of plastics from different sources.

Conclusion

Taken together, this study first characterized petroleum-based plastics and their absorbed trace metals in the sediments of the Marina Beach, indicating that petroleum-based plastics acted as the vectors for the transportation of metal elements in the marine biome.


中文翻译:

印度钦奈滨海海滩沉积物中石油基塑料及其吸收的痕量金属的表征

背景

海洋塑料碎片造成的污染已成为全球关注的焦点。在印度钦奈的玛丽娜海滩,石油基塑料污染及其吸收的金属的特征尚未见报道。在这项研究中,我们首先对石油基塑料碎片进行了表征,并对滨海海滩塑料中的砷(As),铬(Cr),铜(Cu)和铅(Pb)进行了定量。

结果

从整个滨海海滩的三个不同地点收集了总共2275个沉积物样本。我们的结果表明,塑料碎片主要是纤维,球形和碎片三种形状。通过扫描电子显微镜(SEM)对塑料碎片进行机械腐蚀和化学风化。确定了五种类型的聚合物,包括低密度聚乙烯(LDPE),聚对苯二甲酸乙二醇酯(PET),聚丙烯(PP),聚酰胺(PA)和聚碳酸酯(PC)。通过电感耦合等离子体质谱法(ICP-MS)测定了它们吸收的痕量金属,例如Cr,As,Pb和Cu。大多数塑料中的砷含量很高。但是,Pb,Cu和Cr的最高含量分别在PA,PP和PA中,这意味着来自不同来源的塑料的吸附偏好。

结论

综上所述,这项研究首先对滨海海滩沉积物中的石油基塑料及其吸收的痕量金属进行了表征,表明石油基塑料是海洋生物群落中金属元素运输的载体。
更新日期:2020-08-27
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