Results 281 to 290 of about 2,137,656 (325)

Mesoporous silica nanoparticles modified with stimuli-responsive polymer brush as an efficient adsorbent for chlorophenoxy herbicides removal from contaminated water

International Journal of Environmental Analytical Chemistry, 2021
The contamination of water with herbicides poses a serious threat to the environment as a result of their widespread use in the agricultural field. Herein, mesoporous silica nanoparticles (MSNs) were synthesised and grafted with poly(2-(tert-butylamino ...
K. Alotaibi
semanticscholar   +1 more source

Controlled release of herbicides by 2,4-D-, MCPA-, and bromoxynil-intercalated hydrotalcite nanosheets

, 2021
Volatilization and leaching are two critical pathways for pesticide transportation from their applied areas to non-target regions. Nanocarrier-based formulations can improve the use efficiency and reduce the off-target effects of pesticides, however, the
Yunhao Gao, Zhiyuan Zhou, Xi Chen, Yuyang Tian, Yan Li, Huachen Wang, Xuan Li, Xueyang Yu, Yongsong Cao   +8 more
semanticscholar   +1 more source

Chronic Toxicosis of Sheep from the Organic Herbicide Di-Allate

American Journal of Veterinary Research, 1972
SUMMARY Yearling sheep were dosed with di-allate for 29 weeks. Three dosage levels (10, 25, and 50 mg./kg./day) resulted in toxicosis. Cumulative effects were not detected in sheep given the lO-mg./kg. dose; however, acquired tolerance in sheep given the larger doses was evident.
J S, Palmer, M, Haufler, L M, Hunt, J C, Schlinke, C E, Gates   +4 more
openaire   +2 more sources

Ecotoxicological assessment of glyphosate-based herbicides: Effects on different organisms

Environmental Toxicology and Chemistry, 2016
Abstract   Glyphosate-based herbicides are the most commonly used worldwide because they are effective and relatively nontoxic to nontarget species. Unlimited and uncontrolled use of such pesticides can have serious consequences for human health and ecological balance.
Laís, de Brito Rodrigues, Rhaul, de Oliveira, Flávia Renata, Abe, Lara Barroso, Brito, Diego Sousa, Moura, Marize Campos, Valadares, Cesar Koppe, Grisolia, Danielle Palma, de Oliveira, Gisele Augusto Rodrigues, de Oliveira   +8 more
openaire   +2 more sources

Influence of the organic complex concentration on adsorption of herbicide in organic modified montmorillonite

Journal of Environmental Science and Health, Part B, 2017
This study was undertaken to determine the impact of the organic complex concentration on the adsorption of herbicide (acetochlor) at the surface of the organic modified montmorillonite. In this work, natural montmorillonite from Bogovina (Boljevac municipality, Serbia) was used for organic modification. Cation-exchange capacity of this montmorillonite
Kaluderović, Lazar M., Tomić, Zorica P., Đurović-Pejčev, Rada, Vulić, Predrag J., Asanin, Darko P.   +4 more
openaire   +4 more sources

Temperature-Dependent Emission and Turn-Off Fluorescence Sensing of Hazardous "Quat" Herbicides in Water by a Zn-MOF Based on a Semi-Rigid Dibenzochrysene Tetraacetic Acid Linker.

Inorganic Chemistry, 2020
A zinc metal-organic framework, i.e., Zn-MOF (Zn-DBC), with ca. 27% solvent-accessible void volume was synthesized from a rationally designed tetraacid based on sterically insulated dibenzo[g,p]chrysene core; the latter inherently features concave shapes.
Arindam Mukhopadhyay, S. Jindal, G. Savitha, J. N. Moorthy   +3 more
semanticscholar   +1 more source

Organic Matter Reactions Involving Herbicides in Soil

Journal of Environmental Quality, 1972
AbstractDocumentary evidence is presented in support of the view that organic matter plays a major role in the adsorption of herbicides in soil, and that organic matter content is usually the soil factor most directly related to herbicidal behavior. Major attention is given to the nature and origin of humic and fulvic acids, with special emphasis being
openaire   +1 more source

Interactions of Herbicides with Water-Soluble Soil Organic Matter

Weed Science, 1991
Interactions of water-soluble soil organic matter (WSSOM) with the herbicides bromacil, metribuzin, alachlor, diquat, and paraquat were examined to determine if these interactions can improve predictions of herbicide leaching potential. A high-performance liquid chromatography gel filtration column was used to separate WSSOM extracts from four mineral ...
Karrie L. Pennington, Sidney S. Harper, William C. Koskinen   +2 more
openaire   +1 more source

The herbicide sindone B disrupts spindle microtubule organizing centers

Pesticide Biochemistry and Physiology, 1992
Abstract Sindone B is classified as a “mitotic disrupter herbicide”, but little information is published on the physiological effects of this structurally unique compound. Onion root tips treated with various concentrations of sindone B were examined by light microscopy following Feulgen staining, immunofluorescence of tubulin, and electron ...
Larry P. Lehnen, Kevin C. Vaughn
openaire   +1 more source

Role of Humified Organic Matter in Herbicide Adsorption

Weed Technology, 1989
Organic matter is the soil constituent most often associated with herbicide adsorption. Structural diversity makes humified organic material an ideal substrate for the adsorption of many pesticides, but variability in composition and distribution in situ complicates interpretation of its quantitative effect on adsorption.
openaire   +1 more source