Topic
Water environment
About: Water environment is a research topic. Over the lifetime, 13384 publications have been published within this topic receiving 125138 citations.
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TL;DR: In this paper, a generic approach is presented for the construction of tunable ion-conducting nanochannels via direct assembly of graphene oxide (GO)/poly(phosphonic acid) core-shell nanosheets prepared by surface-initiated precipitation polymerization.
Abstract: Simultaneous manipulation of topological and chemical structures to induce ionic nanochannel formation within solid electrolytes is a crucial but challenging task for the rational design of high-performance electrochemical devices including proton exchange membrane fuel cell. Herein, a novel generic approach is presented for the construction of tunable ion-conducting nanochannels via direct assembly of graphene oxide (GO)/poly(phosphonic acid) core–shell nanosheets prepared by surface-initiated precipitation polymerization. Using this simple and rapid approach to engineer GO/polymer nanosheets at the molecular-level, ordered and continuous nanochannels with interconnected hydrogen-bonded networks having a favorable water environment can be created. The resulting membranes exhibit proton conductivities up to 32 mS cm−1 at 51% relative humidity, surpassing state-of-the-art Nafion membrane and all previously reported GO-based materials.
95 citations
TL;DR: A critical understanding of fate and toxicity of pharmaceutical compounds is provided and their vulnerability and occurrence in South Asia is highlighted and more in-depth and interdisciplinary understanding of the subject is developed.
95 citations
TL;DR: The results revealed that the apparent mobility and potential metal bioavailability of heavy metals in the sediments, based on the exchangeable and carbonate fractions, decreased in the order: Cd>Zn≈Pb>Cu>Cu.
Abstract: Due to rapid urbanization and industrialization, heavy metals in road-deposited sediments (RDSs) of parks are emitted into the terrestrial, atmospheric, and water environment, and have a severe impact on residents' and tourists' health. To identify the distribution and characteristic of heavy metals in RDS and to assess the road environmental quality in Chinese parks, samples were collected from Beijing Olympic Park in the present study. The results indicated that particles with small grain size ( Pb>Cu>Zn. This study analyzed the mobility of heavy metals in sediments using partial sequential extraction with the Tessier procedure. The results revealed that the apparent mobility and potential metal bioavailability of heavy metals in the sediments, based on the exchangeable and carbonate fractions, decreased in the order: Cd>Zn≈Pb>Cu.
95 citations
TL;DR: In this paper, a remote-sensing method using MODIS time-series imagery was applied to detect the expansion of intensive farming systems (shrimp farming and triple rice cropping) in the Soc Trang and Bac Lieu provinces of the Vietnamese Mekong Delta (VMD).
95 citations
TL;DR: Investigation of the toxicity of eleven PPCPs through bioassays on bacteria, algae, crustaceans, amphibians and protozoa and compared the toxicology indexes with the concentration in the river water revealed that antibacterial triclosan affected all aquatic lives tested.
94 citations