Distribution and source characterization of microplastics pollution in Zhengzhou Section of the Yellow River
To investigate the distribution and pollution characteristics of microplastics in the water environment of the middle and lower reaches of the Yellow River in China,this study took the Zhengzhou section of the Yellow River as the study object,selected seven representative points for water sample collection,observed the abundance and morphological characteristics of microplastics by body-viewing microscope,further identified their constituents with the help of micro-infrared spectroscopy,compared and analyzed the statistics with the microplastic pollution status of other water bodies,and explored their pollution sources.The results showed that the average abundance of microplastics in the water body was(16.86±4.20)n/L;the size of particle less than 1mm was dominant,accounting for 61.42%;the shape of fibrous accounted for the highest proportion of 79.31%;the color of microplastics was dominated by transparent,accounting for 56.06%;Rayon dominated the polymer type of microplastics,and there were also polyethylene terephthalate(PET)and polypropylene(PP),etc.The morphological characteristics and polymer types of microplastics in different locations can reflect their potential sources of pollution to a certain extent.Compared with other water bodies,the abundance distribution of microplastics in Zhengzhou section of the Yellow River showed some differences,while the distribution trend of particle size was more or less the same,and the shape and color were mainly fibrous and transparent.The differences in microplastic contamination among different water bodies may be closely related to the habitat around the water bodies,the economic level,and the situation of human activities.
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万方数据
