基于焦平面阵列（FPA）傅里叶变换红外（FT-IR）成像的污水处理厂中微塑料质量和去除率的定量。

Quantification of microplastic mass and removal rates at wastewater treatment plants applying Focal Plane Array (FPA)-based Fourier Transform Infrared (FT-IR) imaging.

机构信息

Aalborg University, Department of Civil Engineering, Thomas Manns Vej 23, 9220 Aalborg Øst, Denmark.

出版信息

Water Res. 2018 Oct 1;142:1-9. doi: 10.1016/j.watres.2018.05.019. Epub 2018 May 17.

DOI:10.1016/j.watres.2018.05.019

Abstract

This paper presents a method for microplastic (MP) mass quantification using a Focal Plane Array-based Fourier Transform Infrared imaging technique. It discusses the issue that particle number is not a conserved base quantity and hence less suited than mass to compare independent studies on MP in the environment. It concludes that MP mass should be included when quantifying MP pollution in the environment, supplementing the conventional approach of reporting particle numbers. Applying mass as the unit of MP measurement, the paper presents data showing that Danish wastewater treatment plants discharge around 3 t/year of MP in the size range 10-500 μm. This value corresponds to an annual per capita emission from these plants of 0.56 g MP/(capita year). The distribution of polymer types by mass and particle number differed because the size of MP particles of the different material types varied.

摘要

本文提出了一种使用基于焦平面阵列的傅里叶变换红外成像技术对微塑料（MP）进行质量量化的方法。文中讨论了颗粒数量不是守恒的基本数量的问题，因此，与质量相比，颗粒数量不太适合比较环境中微塑料的独立研究。结论是，在量化环境中的微塑料污染时，应包括微塑料质量，补充传统的颗粒数量报告方法。本文以质量作为微塑料测量的单位，提供的数据表明，丹麦的废水处理厂每年在 10-500μm 的粒径范围内排放约 3 吨微塑料。这一数值相当于这些工厂每年每人排放 0.56 克微塑料/（人年）。由于不同材料类型的微塑料颗粒的大小不同，按质量和颗粒数量分布的聚合物类型也不同。