In the present work, degradation of p-nitrophenol (PNP) and its mineralization by a UV/Vis-based persulphate activation process was investigated. Firstly, screening processes as direct photolysis, alone activated radiation performed. The incidence demonstrated to have an important role in oxidant activation, allowing achieve highest PNP total organic carbon (TOC) removals. maximum oxidation (10...

The SULT (sulphotransferase) family plays a critical role in the detoxification and activation of endogenous and exogenous compounds as well as in the regulation of steroid hormone actions and neurotransmitter functions. The structure-activity relationships of the human SULTs have been investigated with focus on the amino acid 146 in hSULT1A3 and its impact on dopamine/PNP (p-nitrophenol) speci...

In January 1995 the U.S. Environmental Protection Agency declared methyl parathion-contaminated homes in Lorain County, Ohio, as a Superfund cleanup site. During the 2-year cleanup, the Centers for Disease Control and Prevention in collaboration with county and city health officials conducted a study of exposure and health effects among residents. We administered 254 household and 747 individua...

Phosphatase enzymes regulate organic phosphorus (P) turnover in soil, but a clear understanding remains elusive. To investigate this, phosphomonoesterase and phosphodiesterase activities were determined by using para-nitrophenol (pNP) analogue substrates in a range of temperate pasture soils from England and Wales. Substrate-induced phosphatase activity ranged between 2.62 and 12.19 micromol pN...

Uptake, depuration, and metabolism ofp-nitroanisole (PNA) and p-nitrophenol (PNP) were investigated in Halim eda, Padina, and Porolithon species, all of which are calcareous marine algae found in tropical waters . The algae were exposed to filtered seawater solutions of either PNA or PNP in a static system for 24 hr (uptake period), then placed in clean water and allowed to release absorbed che...

In this study, the composite of aluminum metal-organic framework MIL-68(Al) and reduced graphene oxide (MA/RG) was synthesized via a one-step solvothermal method, and their performances for p-nitrophenol (PNP) adsorption from aqueous solution were systematically investigated. The introduction of reduced graphene oxide (RG) into MIL-68(Al) (MA) significantly changes the morphologies of the MA an...

4-Nitrophenol (PNP), is generally regarded as an environmental endocrine disruptor (EED). Phytosterin (PS), a new feed additive, possesses highly efficient antioxidant activities. The transcription factor, nuclear factor-erythroid 2-related factor 2 (Nrf2), is an important regulator of cellular oxidative stress. Using rats, this study examined PNP-induced testicular oxidative damage and PS-medi...

Fe3O4 nanoparticles decorated on cellulose aerogel (CA) from banana stems (Fe3O4@CA) were synthesized for application in the Fenton degradation of p-nitrophenol (PNP). Cellulose extracted raw was with kymene as a crosslinking agent and freeze-dried method. The Fe3O4@CA samples characterized by X-ray diffraction (XRD), Energy-dispersive spectroscopy (EDS), Scanning Electron Microscope (SEM), Tra...

Hybridisation of mesoporous organosilicas (MO) to reinforce the surface capability in adsorption and stabilisation noble metal nanoparticles is great attention generating/supporting within their matrices transforming them into efficient heterogeneous catalysts. Here, we used a unique hybrid organic-inorganic silica which pore profile pattern was similar well-known silica, SBA-15 for catalysis. ...

During the last several years, illegal commercial application of methyl parathion (MP) in domestic settings in several U.S. Southeastern and Midwestern States has affected largely inner-city residents. As part of a multiagency response involving the U.S. Environmental Protection Agency (U.S. EPA), the Agency for Toxic Substances and Disease Registry (ATSDR), and state and local health departmen...