We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Occurrence of microplastics in farmland around non-ferrous metals sulfide mining areas: Characteristics changes caused by sulfide minerals
Summary
Farmland soil near metal mining areas contains extremely high levels of microplastics, and the closer you get to the mine, the worse the contamination, with most of these plastic particles being so tiny (under 100 micronths) that they're especially easy to absorb into crops or the body. The study also found this plastic pollution occurs alongside toxic heavy metals like arsenic and copper, meaning food grown in these areas could carry a "double hit" of contaminants, which matters if you're eating produce grown near industrial mining regions.
Soil microplastics (MPs) pollution poses significant risks to environmental and human health, particularly in agricultural systems. However, limited data exist on MPs in farmland soils near mining regions, especially those associated with non-ferrous metal sulfide deposits. This study investigated the characteristics of MPs in agricultural soils surrounding sulfide mining areas. MPs were extracted by density separation, identified using µFTIR, and statistically analyzed. Results revealed an average MP abundance of 19,610 n/kg, with dominant MPs (> 80 %) falling within the 0-100 μm size range. The most prevalent MP features included polystyrene, fragments, and transparent. Spatial analysis indicated a significant inverse correlation (P < 0.001) between MP abundance and the sample site distance to the mining area. We found that sulfide minerals decreased soil pH and oxidation-reduction potential (ORP), and that MPs abundance was positively correlated with ORP and negatively correlated with the concentrations of Fe, Cu, As. Agricultural activities, plastic waste disposal, and industrial activities jointly contributed to MP pollution. These findings highlight the need for integrated environmental management strategies to address co-occurring MPs and heavy metal pollution in mining-affected farmlands. Comprehensive monitoring of these pollutants is essential for developing targeted mitigation measures.