Results 1 to 10 of about 5,224,909 (303)

Development of multimetric index based on benthic macroinvertebrate for water quality assessment of Jajrood River in Iran [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2022
Increased anthropogenic disturbances in river ecosystems has led to a reduction in the biodiversity of rivers. The purpose of this study was to develop a multimetric index based on benthic macroinvertebrate for water quality assessment of Jajrood River ...
Faeze Hosseinabadi   +3 more
doaj   +1 more source

Modeling and Optimization of Arsenic (III) Removal from Aqueous Solutions by GFO Using Response Surface Methodology [PDF]

open access: yesPollution, 2020
Arsenic is a highly toxic element for human beings, which is generally found in groundwater. Dissolved Arsenic in water can be seen as As+3 and As+5 states.
F. S. Tabatabaei   +7 more
doaj   +1 more source

Modelling the Current and Future Pollutant Emission from Non-Road Machinery: A Case Study in Shanghai

open access: yesAerosol and Air Quality Research, 2023
With the effective control of air pollutants from industrial sources and motor vehicles, non-road machinery has become the major pollutant source with a total emission accounting for more than 65% of non-road mobile sources in China. However, few efforts
Rui Chen   +4 more
doaj   +1 more source

Taxonomy of benthic macroinvertebrates in Jajrud River for water quality assessment [PDF]

open access: yesEnvironmental Resources Research, 2020
The invertebrates are one of the most important terrestrial fauna and freshwater taxa.Benthic macroinvertebrates include aquatic insects and spiders, mites, crustaceans, andspecies of mollusks and worms that are aquatic in their immature stages and ...
F. Mehrjo   +3 more
doaj   +1 more source

Human exposure to per- and polyfluoroalkyl substances and other emerging contaminants in drinking water

open access: yesnpj Clean Water, 2023
A wide range of chemicals was measured in different types of drinking water and urine samples through target and non-target screening (NTS) to estimate human exposure.
Dora Cserbik   +9 more
doaj   +1 more source

Modeling and Optimization of the Coagulation–Flocculation Process in Turbidity Removal from Aqueous Solutions Using Rice Starch [PDF]

open access: yesPollution, 2019
Natural coagulants have received much attention for turbidity removal, thanks to their environmental friendliness. The present study investigates potential application of rice starch for removal of turbidity from aqueous solutions.
S. Usefi, M. Asadi-Ghalhari
doaj   +1 more source

Variations in Sources, Composition, and Exposure Risks of PM2.5 in both Pre-Heating and Heating Seasons

open access: yesAerosol and Air Quality Research, 2022
“Clean Heating” (CH) was promoted in 2017 in north China. Nevertheless, CH impacts on PM2.5 chemical components, sources, and health risks in small cities remain unclear.
Dingyuan Yang   +14 more
doaj   +1 more source

Five-year Variations in Air Pollutant Emissions with Ultra-low Emission Retrofits in a 660 MW Coal-fired Power Unit

open access: yesAerosol and Air Quality Research, 2023
China has enacted the ultra-low emission (ULE) transform in coal-fired power plants. Various studies have focused on the model simulation of pollutant emission variations on a national scale, while the specific data for a concrete generation unit was ...
Zhiyong Li   +9 more
doaj   +1 more source

Space-time Characteristics of 16 PM2.5-bound Phthalates (PAEs) in Ambient Air from Shanghai: Profiles, Sources, Meteorological Effects, and Exposure Risks

open access: yesAerosol and Air Quality Research, 2023
Generated by chemical combinations between alcohols and phthalic anhydrites, phthalates are a group of synthetic chemicals broadly utilized as plasticizers. They occur in both particle and gas phases in the air causing threats to human health.
Janvier Munyaneza   +4 more
doaj   +1 more source

Levels, Chemical Compositions, and Sources of PM2.5 of Rural and Urban Area under the Impact of Wheat Harvest

open access: yesAerosol and Air Quality Research, 2021
Wheat harvesting significantly alters the characteristics of PM2.5 in both rural regions and the adjacent urban areas. We conducted a systematic PM2.5 sampling campaign at two sites, one rural (ARS) and the other urban (UA), in the center of the Beijing ...
Zhiyong Li   +12 more
doaj   +1 more source

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