We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
[Spatial and Temporal Variation Characterization and Variability of Microplastics in Water-borne River and Reservoir].
Summary
A study comparing microplastic levels in a river and a reservoir used as drinking water sources in Guangdong, China found meaningful differences in contamination patterns across seasons and locations. The findings underscore that drinking water source protection strategies need to account for microplastic pollution, as these particles can enter the water supply before treatment.
Water-source rivers and reservoirs are crucial sources of drinking water for numerous urban and rural areas. In depth exploration of the occurrence characteristics and risk differences of microplastics （MPs） in these two types of water environments is of great significance for formulating targeted pollution control strategies for MPs. This study selected the Dongjiang River and Xinfengjiang Reservoir， important drinking water sources in Guangdong Province， China， as the research objects. Through a systematic investigation of the abundance， composition， and diversity of MPs in their surface water and sediments， the differences in the pollution characteristics of MPs in the two types of water environments under spatiotemporal changes were explored in depth. The research results showed that during the dry and wet seasons， the abundance ranges of MPs in the surface water of the Dongjiang River were 180-500 and 33-300 items·m-3， respectively， and the corresponding abundance ranges of MPs in sediments were 145-1 610 and 105-410 items·kg-1， respectively. In the Xinfengjiang Reservoir， the abundance ranges of MPs in the surface water during the dry and wet seasons were 120-750 and 233-733 items·m-3， respectively， and the abundance ranges of MPs in sediments were 75-365 and 80-445 items·kg-1， respectively. The detected MPs were predominately 0.1-1 mm， fibrous， and white， and PET， PP， PE， and CP were the dominant polymer types. During the dry season， the abundance of MPs in the surface water and sediments of the Dongjiang River was significantly higher than that in the wet season （P < 0.05）. However， the difference in the abundance of MPs in the Xinfengjiang Reservoir between the two water periods was not obvious， indicating that the impact of water period changes on the abundance of MPs in the two types of water environments was different. At the same time， the diversity indices of MPs in the two types of water environments both showed the characteristic that the dry season was significantly higher than the wet season （P < 0.05）， indicating that water period changes affected the diversity of MPs in the two water bodies by re-combining the composition of MPs. In addition， under different water periods， the distribution of MPs in the Dongjiang River and Xinfengjiang Reservoir showed a large spatial heterogeneity. The impact of water period changes on the lower reaches of the Dongjiang River was greater than that on the upper reaches， and the impact on the tributaries entering the Xinfengjiang Reservoir was greater than that on the reservoir body. Notably， the abundance of MPs in the Xinfengjiang Reservoir was significantly higher within the two water periods than that in the Dongjiang River （P < 0.05）， indicating that the Xinfengjiang Reservoir was an important pollution source of MPs in the Dongjiang River. The comparison results of the three risk indicators showed that the ecological risk of MPs in the surface water of the Xinfengjiang Reservoir in the dry season was higher than that in the Dongjiang River. The differences in the pollution characteristics of MPs in the two types of water environments in different water periods may have been closely related to the differences in the impacts of rainfall and flow on their respective pollution sources and hydrodynamic characteristics.
Sign in to start a discussion.
More Papers Like This
[Composition and Distribution Characteristics of Microplastics in Danjiangkou Reservoir and Its Tributaries].
Researchers analyzed the types, abundance, and distribution of microplastics in Danjiangkou Reservoir, a first-class drinking water source protection area in China. Finding microplastics in a protected drinking water source underscores the need for improved upstream plastic waste management and water treatment to protect public health.
Seasonal variations of microplastics in surface water and sediment in an inland river drinking water source in southern China
Researchers surveyed microplastic contamination in surface water and sediment of a southern China river used as a drinking water source during both flooding and dry seasons. They found microplastic abundances were generally higher during the dry period, with fibers being the dominant type and polyethylene the most common polymer. The study suggests that seasonal hydrological changes significantly affect microplastic distribution in inland drinking water sources.
Occurrence and Risk Assessment of Microplastics in a Source Water Reservoir in Middle Reaches of Yellow River
Researchers assessed microplastic occurrence and associated risk in a source water reservoir in Malaysia, detecting particles across multiple sampling sites and identifying dominant polymer types and size fractions relevant to drinking water safety.
A Study on Distribution of Characteristics of Microplastic in the Han-River Watershed
Scientists mapped the distribution and characteristics of microplastics throughout the Han River watershed in South Korea, including tributaries and sections that serve as drinking water sources, and found widespread contamination varying by location and flow conditions. The findings underscore the need for better monitoring and management of microplastics in freshwater systems that supply drinking water to millions of people.
Microplastic pollution responses to spatial and seasonal variations and water level management in a polymictic tropical reservoir (São Paulo, Brazil)
Researchers assessed microplastic pollution in water and sediment from the Guarapiranga Reservoir in Brazil, which supplies drinking water to over five million people. They found that microplastic concentrations were higher near urbanized areas and during the dry season, with water management operations like reservoir drawdowns influencing particle distribution. The study highlights the connection between urban land use, seasonal patterns, and microplastic contamination in critical drinking water sources.