Results 1 to 10 of about 10,271,382 (298)

Assessing limitation factors and thresholds for macroinvertebrate communities in response to land use gradients [PDF]

open access: yesE3S Web of Conferences, 2021
Transformations of land use from natural to anthropic type have been recognized as a significant trigger which degenerate the aquatic ecological quality seriously.
Ding Sen   +4 more
doaj   +1 more source

Analysis of Specific Perfluorohexane Sulfonate Isomers by Liquid Chromatography-Tandem Mass Spectrometry: Method Development and Application in Source Apportionment

open access: yesJournal of Analytical Methods in Chemistry, 2022
Characterization of perfluorohexane sulfonate (PFHxS) isomers, a chemical proposed for listing under the Stockholm Convention, is important to elucidate its environmental behaviors and sources. Optimized chromatographic separation coupled with monitoring
Liping Yang   +4 more
doaj   +1 more source

Precolumn Derivatization High-Performance Liquid Chromatography for Determination of Perfluorocarboxylic Acids in Catalytic Degradation Solutions

open access: yesInternational Journal of Analytical Chemistry, 2022
Perfluoroalkyl carboxylic acids (PFCAs), a series of ubiquitous contaminants in the global environment, attracted much attention due to their potential for high bioaccumulation and toxicity to various organisms. There are a lot of measurement requests in
Liping Yang   +4 more
doaj   +1 more source

Study on Ecological Security Evaluation Index System of the Yellow River Basin [PDF]

open access: yesE3S Web of Conferences, 2023
As an important energy base and ecological barrier in China, the ecological security of the Yellow River Basin has a very important strategic position in the pattern of high-quality development, but it is threatened by human activities and climate change.
Tian Yuxin   +4 more
doaj   +1 more source

Distribution, health risk assessment, and water quality criteria of phthalate esters in Poyang Lake, China

open access: yesEnvironmental Sciences Europe, 2023
Although China has been the main manufacturer and consumer of phthalate esters (PAEs), human health ambient water quality criteria (AWQCs) have not been proposed for these chemicals.
Shunhao Ai   +5 more
doaj   +1 more source

eDNA metabarcoding as a promising conservation tool to monitor fish diversity in Beijing water systems compared with ground cages

open access: yesScientific Reports, 2022
Fish diversity, an important indicator of the health of aquatic ecosystems, is declining sharply due to water pollution, overfishing, climate change, and species invasion.
Mei Shen   +6 more
doaj   +1 more source

Enhanced phenol removal by permanganate with biogas residue biochar: catalytic role of in-situ formation of manganese dioxide and activation of biochar

open access: yesBiochar, 2023
Increased biogas residue related to the rapid development of anaerobic fermentation has become an urgent environmental problem. The pyrolysis of biogas residue into biochar is one of the most promising treatments.
Dongyang Li   +7 more
doaj   +1 more source

Research advances on the influence of typical geochemical and hydrogeological characteristics on the natural attenuation of pollutants

open access: yes地质科技通报, 2023
As an effective risk prevention and control tool for contaminated sites, Monitoring Natural Attenuation (MNA) has been applied worldwide. The core of this technology is to determine the ability and efficiency of pollutant attenuation, which are ...
Meng Zhao   +6 more
doaj   +1 more source

Development and evaluation of a Planktonic Integrity Index (PII) for Jingpo Lake, China

open access: yesJournal of Limnology, 2019
A Planktonic Integrity Index (PII) for the China’s largest alpine barrier lake (Jingpo Lake) was developed to assess the water quality of Jingpo Lake by using phytoplankton and zooplankton metrics.
Xing Wang   +5 more
doaj   +1 more source

Chemical Compositions and Source Analysis of PM2.5 during Autumn and Winter in a Heavily Polluted City in China

open access: yesAtmosphere, 2020
As one of the biggest cities in North China, Jinan has been suffering heavy air pollution in recent decades. To better characterize the ambient particulate matter in Jinan during heavy pollution periods, we collected daily PM2.5 (particulate matter with ...
Shasha Tian   +11 more
doaj   +1 more source

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