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首页> 外文会议>Symposium on Characterization of Minerals, Metals, and Materials >Microplastics: A Novel Method for Surface Water Sampling and Sample Extraction in Elechi Creek, Rivers State, Nigeria
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Microplastics: A Novel Method for Surface Water Sampling and Sample Extraction in Elechi Creek, Rivers State, Nigeria

机译：微塑料：尼日利亚里弗斯州Elechi Creek地表水采样和样品提取的新方法

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摘要

The geometric increase in the production and exploitation of plastics worldwide has several advantages as well as disadvantages due to the mismanagement of plastic waste. These waste products find its way into the aquatic body. Microplastics are plastic particles with its longest diameter less than or equal to 5 mm. Their microscopic nature, irregular color and morphology have made their extraction from the buoyant organic materials problematic. This work documents for the first time, the sampling and sample extraction of microplastics in Nigeria. An optimized sampling and sample extraction protocol for surface water was developed. The extraction protocol was developed in a laboratory study using a simulated sample that mimics the environmental sample (microplastics + organic materials). A micronized LDPE (＜300 μm) was used for the study and yielded a percentage recovery rate of 82%. The digested microplastics which were subjected to SEM analysis showed a slight change in the surface morphology. Thereafter, the environmental sample was extracted using the developed laboratory protocol and a high positive result was achieved. This protocol improved NOAA's method of extraction by excluding the use of microscope for the final extraction, which, of course, will yield a biased result. This was achieved by the addition of ethanol to the final solution.
机译：由于对塑料废物的管理不善，全世界塑料生产和开发的几何增长有几个优点和缺点。这些废物进入水体。微塑料是最长直径小于或等于5mm的塑料颗粒。它们的微观性质、不规则的颜色和形态使得它们从浮力有机材料中提取存在问题。这项工作首次记录了尼日利亚微塑料的取样和样品提取。开发了地表水的优化采样和样品提取方案。提取方案是在实验室研究中制定的，使用模拟环境样品（微塑料+有机材料）的模拟样品。研究中使用了超细LDPE（＜300μm），回收率为82%。对消化后的微塑料进行SEM分析，发现其表面形态略有变化。此后，使用开发的实验室方案提取环境样品，并获得高阳性结果。该方案改进了NOAA的提取方法，排除了使用显微镜进行最终提取，当然，这会产生有偏差的结果。这是通过向最终溶液中添加乙醇实现的。

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