Environmental Science and Pollution Research - Climate change and tourism’s interaction and vulnerability have been among the most hotly debated topics recently. In this context, the study... 相似文献
Journal of Material Cycles and Waste Management - With the outbreak of the novel coronavirus (COVID-19), the generation of a large amount of medical waste brought a rude shock to the existing solid... 相似文献
Environmental Science and Pollution Research - Exploring the changes in ecological networks (ENs), its eco-environment effects and the differences in urban agglomerations in various urbanization... 相似文献
Journal of Polymers and the Environment - Novel pH-colorimetric intelligent films were designed from agar and methylcellulose matrix (AM) with soybean wax (SBW) in several percentages (5, 10, 15,... 相似文献
As an ubiquitous carcinogen, polycyclic aromatic hydrocarbons (PAHs) are closely related to anthropogenic activities. The process of urbanization leads to the spatial interlacing of farmlands and urbanized zones. However, field evidence on the influence of urbanization on the accumulation of PAHs in crops of peri-urban farmlands is lacking. This study comparatively investigated the urbanization-driven levels, compositions, and sources of PAHs in 120 paired plant and soil samples collected from the Yangtze River Delta in China and their species-specific human intake risks. The concentrations of PAHs in crops and soils in the peri-urban areas were 2407.92 ng g?1 and 546.64 ng g?1, respectively, which are significantly higher than those in the rural areas. The PAHs in the root were highly relevant to those in the soils (R2?=?0.63, p?<?0.01), and the root bioconcentration factors were higher than 1.0, implying the contributions of root uptake to plant accumulations. However, the translocation factors in the peri-urban areas (1.57?±?0.33) were higher than those in the rural areas (1.19?±?0.14), indicating the enhanced influence through gaseous absorption. For the congeners, the 2- to 3-ring PAHs showed a higher plant accumulation potential than the 4- to 6-ring PAHs. Principal component analysis show that the PAHs in the peri-urban plants predominantly resulted from urbanization parameters, such as coal combustion, vehicle emissions, and biomass burning. The mean values of estimated dietary intake of PAHs from the consumption of peri-urban and rural crops were 9116 ng day?1 and 6601.83 ng day?1, respectively. The intake risks of different crops followed the order rice?>?cabbage?>?carrot?>?pea. Given the significant input of PAHs from urban to farmland, the influence of many anthropogenic pollutants arising from rapid urbanization should be considered when assessing the agricultural food safety.
Journal of Material Cycles and Waste Management - Some modified kaolin materials have the potential as adsorbents for the removal of numerous pollutants. In view of this, we developed two modified... 相似文献