The study focuses on analyzing the presence and quantity of microplastics near an unscientific solid waste dumping site located at Kochi city in India and thereby assessing the contribution of massive open dumping towards microplastic pollution in the river. Two sets of sampling with three sediment samples from nearby Kadambrayar river and five topsoil samples from various parts of the Brahmapuram waste dumping yard were carried out during January – February 2019. The samples were analyzed as per the US National Oceanic and Atmospheric Administration (US NOAA) protocol. ATR-FTIR and DSC analysis based characterization indicated that polyethylene dominated the micro plastics followed by polypropylene and polystyrene. The size distribution of particles showed that comparatively larger particles of size range between 2.36 − 4.75 mm were present in the topsoil than that in river sediments which had more number of particles in size range below 2.36 mm. The study confirmed the presence of an average of 100 microplastic pieces per 100 gram of sediments of Kadambrayar river bordering the waste dumping yard at Brahmapuram. The topsoil of Brahmapuram waste dumping yard was found to contain 178 pieces of microplastics per 100 gm of soil. Microplastics are found to be high in the river stretch near the open dumping site which has a significant role in the pollution, causing a major threat to the entire ecosystem.

该研究的重点是分析位于印度科钦市一个不科学的固体废物倾倒场附近的微塑料的存在和数量，从而评估大规模露天倾倒对河流微塑料污染的贡献。2019 年 1 月至 2 月期间，从附近的 Kadambrayar 河采集了 3 个沉积物样本，从 Brahmapuram 垃圾倾倒场的各个部分采集了 5 个表土样本，进行了两组采样。根据美国国家海洋和大气管理局 (US NOAA) 对样本进行了分析） 协议。基于 ATR-FTIR 和 DSC 分析的表征表明，聚乙烯在微塑料中占主导地位，其次是聚丙烯和聚苯乙烯。颗粒的尺寸分布表明，相对较大的颗粒尺寸范围在 2.36 - 4 之间。表层土壤中存在 75 毫米，比河流沉积物中存在更多尺寸范围低于 2.36 毫米的颗粒。该研究证实，在 Brahmapuram 垃圾倾倒场附近的 Kadambrayar 河沉积物中，每 100 克沉积物中平均含有 100 颗微塑料。发现 Brahmapuram 废物倾倒场的表土每 100 克土壤含有 178 块微塑料。在露天倾倒场附近的河段中发现微塑料含量很高，这在污染中起着重要作用，对整个生态系统造成重大威胁。发现 Brahmapuram 废物倾倒场的表土每 100 克土壤含有 178 块微塑料。在露天倾倒场附近的河段中发现微塑料含量很高，这在污染中起着重要作用，对整个生态系统造成重大威胁。发现 Brahmapuram 废物倾倒场的表土每 100 克土壤含有 178 块微塑料。在露天倾倒场附近的河段中发现微塑料含量很高，这在污染中起着重要作用，对整个生态系统造成重大威胁。