Results 11 to 20 of about 1,418,768 (341)

Environmental Analytical Chemistry

Molecules
Environmental analytical chemistry has evolved into a well-established interdisciplinary field (analytical chemistry, pollution chemistry, chemical engineering, etc [...]
Stefan Tsakovski, Tony Venelinov
doaj   +3 more sources

Computer-Assisted Design of Environmentally Friendly and Light-Stable Fluorescent Dyes for Textile Applications. [PDF]

, 2019
Five potentially environmentally friendly and light-stable hemicyanine dyes were designed based on integrated consideration of photo, environmental, and computational chemistry as well as textile applications.
Chen, Guoqiang, Sun, Gang, Tang, Songsong   +2 more
core   +1 more source

Hormônios sexuais estrógenos: contaminantes bioativos Sexual estrogenic hormones: bioactive contaminants

Química Nova, 2006
Natural and synthetic estrogens have been detected in rivers, lakes and estuaries in several parts of the world. The primary sources of these compounds are the industrial and household effluents, which are not eliminated by the received treatment.
Ricardo Wagner Reis Filho, Juliana Coutinho de Araújo, Eny Maria Vieira   +2 more
doaj   +1 more source

A Model Assessment of the Occurrence and Reactivity of the Nitrating/Nitrosating Agent Nitrogen Dioxide (^•NO₂) in Sunlit Natural Waters

Molecules, 2022
Nitrogen dioxide (•NO2) is produced in sunlit natural surface waters by the direct photolysis of nitrate, together with •OH, and upon the oxidation of nitrite by •OH itself. •NO2 is mainly scavenged by dissolved organic matter, and here, it is shown that
Davide Vione
doaj   +1 more source

Quantifying physiological influences on otolith microchemistry [PDF]

, 2015
Trace element concentrations in fish earstones (‘otoliths’) are widely used to discriminate spatially discrete populations or individuals of marine fish, based on a commonly held assumption that physiological influences on otolith composition are minor ...
Hunter, Ewan, Johnson, Rachel C, Milton, J Andrew, Sturrock, Anna M, Trueman, Clive N, Waring, Colin P   +5 more
core   +1 more source

Ecological and Environmental Chemistry

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2017
Gheorghe Duca
doaj   +2 more sources

Assembly and Curation of Lists of Per- and Polyfluoroalkyl Substances (PFAS) to Support Environmental Science Research

Frontiers in Environmental Science, 2022
Per- and polyfluoroalkyl substances (PFAS) are a class of man-made chemicals of global concern for many health and regulatory agencies due to their widespread use and persistence in the environment (in soil, air, and water), bioaccumulation, and toxicity.
Antony J. Williams, Linda G. T. Gaines, Christopher M. Grulke, Charles N. Lowe, Gabriel F. B. Sinclair, Vicente Samano, Inthirany Thillainadarajah, Bryan Meyer, Grace Patlewicz, Ann M. Richard   +9 more
doaj   +1 more source

Analysis of the relationship between students’ argumentation and chemical representational ability: a case study of hybrid learning oriented in the environmental chemistry course

Chemistry Teacher International, 2023
Engaging students in collaborative learning fosters the expression of ideas, deepens understanding, and hones argumentation skills. Argumentation is pivotal, and instructors should facilitate opportunities for its practice.
Ramadhani Dimas Gilang, Yamtinah Sri, Saputro Sulistyo, Widoretno Sri   +3 more
doaj   +1 more source

Influence of Densification on the Pyrolytic Behavior of Agricultural Biomass Waste and the Characteristics of Pyrolysis Products

Energies, 2022
TG/FT-IR techniques, UV-spectroscopy, microwave extraction, XRD and SEM were used to study how densification of the three types of agricultural biomass wastes (wheat straw, soft wood, and sunflower husk) changes the composition and structure of their ...
Marcin Bielecki, Valentina Zubkova, Andrzej Strojwas   +2 more
doaj   +1 more source

Chlorophylls - natural solar cells [PDF]

, 2011
A molecular modeling study was conducted on a series of six natural occurring chlorophylls. Quantum chemistry calculated orbital energies were used to estimate frequency of transitions between occupied molecular orbital and unoccupied molecular orbital ...
Balan, Mugur C., Bolboaca, Sorana D., Jantschi, Lorentz, Sestras, Radu E.   +3 more
core   +3 more sources