Results 71 to 80 of about 6,153 (218)

Activation in Organic and Macromolecular Including Peptide Synthesis by Fluorinated Carboxylic Acids and Derivatives

open access: yesEuropean Journal of Organic Chemistry, Volume 28, Issue 44, November 28, 2025.
This concept paper highlights the importance and the historical developments of activated carboxylic acids in organic, macromolecular, bioorthogonal, and peptide synthesis. It dicusses the use of activated ester, including fluorinated activated ester and other activated carboxylic acid derivatives.
Virgil Percec   +2 more
wiley   +1 more source

Heterogeneous photodegradation of pentachlorophenol and iron cycling with goethite, hematite and oxalate under UVA illumination

open access: yes, 2009
Heterogeneous photodegradation of pentachlorophenol (PCP) in the goethite (£\-FeOOH) and hematite (£\-Fe?O?) systems with oxalate under UVA illumination was investigated.
Sun, Cui-xiang   +14 more
core   +1 more source

Chlorophenols in tap water from wells and surface sources in Rio de Janeiro, Brazil: method validation and analysis

open access: yesQuímica Nova, 2012
Two analytical methods were validated for determination of trichlorophenols, tetrachlorophenols and pentachlorophenol in drinking water. Limits of quantification were at least ten times lower than maximum permissible levels set by the Brazilian ...
André Victor Sartori   +4 more
doaj   +1 more source

Short Communication: Effects of temperature and chemical formulation on the acute toxicity of pentachlorophenol to Simocephalus vetulus (Schoedler, 1858) (Crustacea: Cladocera)

open access: yes, 1995
The influence of temperature on the acute toxicity of a technical formulation (86%) and pure formulation (99%) of pentachlorophenol (PCP) to less than 24-h-old Simocephalus vetulus neonates was determined with 48-h static toxicity tests.
Willis, Kate J.   +2 more
core  

Direct Determination of Pentachlorophenol by Differential Pulse Polarography

open access: yes, 1978
Concern over environmental contamination leading to the introduction of pentachlorophenol into human and animal systems has resulted in the need for a rapid and direct method for determining trace concentrations of this highly toxic compound.
Wade, Albert L.
core   +1 more source

PHOTOCATALYTIC DEGRADATION OF PENTACHLOROPHENOL (PCP) USING IMOBILIZED TiO2

open access: yesIndonesian Journal of Chemistry, 2010
Imobilization of titanium plate using titanium diisopropoxide as a precursor, that will be used as a catalyst for degradation of pentachlorophenol (PCP) has been done.
Winarti Andayani, Agustin Sumartono
doaj   +1 more source

Photodegradation of pentachlorophenol on ZnO

open access: yes, 1999
Villaseñor, J. Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747 Talca, Chile.The photocatalytic degradation of pentachlorophenol on ZnO catalysts is reported. The studies were carried out in a conventional photoreactor at 298
Reyes, P., Pecchi, G., Villasenor, J.
core  

Pentachlorophenol and Phenanthrene Biodegradation in Creosote Contaminated Aquifer Material

open access: yes, 1998
Contamination of the subsurface environment at the Libby Superfund Site, Montana, includes polycyclic aromatic hydrocarbons and pentachlorophenol due to accidental spills and improper disposal of wood preserving wastes.
Judith L. Sims   +7 more
core   +1 more source

Fluorescent Chitosan Hydrogels Based on Biomass‐Derived Carbon Dots for Toxic Aromatic Detection

open access: yesAdvanced Sustainable Systems, Volume 9, Issue 10, October 2025.
Carbon dots made from food waste via a microwave–ultrasound method show strong, pH‐stable fluorescence. Thermal pretreatment enhances their optical properties. Incorporated into chitosan hydrogels, these dots form reusable sensors for detecting aromatic pollutants in water.
Imane Haddadou   +4 more
wiley   +1 more source

Response of the microflora in outdoor experimental streams to pentachlorophenol: environmental factors

open access: yes, 1986
The 2nd year of a 2-year study of the fate of pentachlorophenol in outdoor artificial streams focused on details of microbial degradation by a combination of in situ and laboratory measurements.
Joseph J. Pignatello   +4 more
core   +1 more source

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