Category: 140-66-9

Kim, Youngnam;Hong, Seongjin;Lee, Junghyun;Yoon, Seo Joon;An, Yoonyoung;Kim, Min-Seob;Jeong, Hee-Dong;Khim, Jong Seong published 《Spatial distribution and source identification of traditional and emerging persistent toxic substances in the offshore sediment of South Korea》 in 2021. The article was appeared in 《Science of the Total Environment》. They have made some progress in their research.Quality Control of 4-tert-Octylphenol The article mentions the following:

While the coastal pollution of persistent toxic substances has been widely documented, information on offshore environments remains limited. Here, we investigated the spatial distribution and sources of PTSs in the offshore sediments (n = 34) of South Korea. Sediment samples collected from the Yellow Sea (n = 18), the South Sea (n = 10), and the East Sea (n = 6), in 2017-18 were analyzed for a total of 71 PTSs. Low-chlorinated PCBs (tri- and tetra Cl-CBs) were predominant (mean: 77%), primarily indicating atm. inputs. PAHs widely accumulated in the three seas with low to moderate level (22-250 ng g-1 OC), and dominated by high mol. weight PAHs (4-6 rings). PMF anal. revealed coast-specific PAHs sources; i.e., originated from mainly coke production (77%) in the Yellow Sea, vehicle emissions (68%) in the South Sea, and fossil fuel combustion (49%) in the East Sea. SOs showed significant contamination than other PTSs, with elevated concentrations in the Yellow Sea (mean: 350 ng g^-1 OC). APs showed a similar regional distribution to SOs, but concentrations were much lower (mean: 17 ng g^-1 OC). SOs and APs seemed to be introduced from rivers and estuaries on the west coast of Korea, where industrial and municipal activities are concentrated, then might be transported to offshore through tide or currents. Overall, the novel data presented for various PTSs in offshore Korean sediments warrant the necessity of a long-term monitoring effort and urgent management practice to protect marine ecosystem.4-tert-Octylphenol (cas: 140-66-9) were involved in the experimental procedure.

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Quality Control of 4-tert-Octylphenol It has been shown to cause harm to vertebrate male reproductive systems.

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Kennes-Veiga, David M.;Vogler, Bernadette;Fenner, Kathrin;Carballa, Marta;Lema, Juan M. published 《Heterotrophic enzymatic biotransformations of organic micropollutants in activated sludge》. The research results were published in《Science of the Total Environment》 in 2021.Recommanded Product: 140-66-9 The article conveys some information:

While heterotrophic microorganisms constitute the major fraction of activated sludge biomass, the role of heterotrophs in the biotransformation of organic micropollutants (OMPs) has not been fully elucidated. Yet, such knowledge is essential, particularly when conceiving novel wastewater treatment plants based on a two-stage process including an A-stage under heterotrophic conditions and a B-stage based on anammox activity. Biotransformation of OMPs in activated sludge is thought to mostly occur cometabolically thanks to the action of low specificity enzymes involved in the metabolism of the primary substrates. For a better understanding of the process, it is important to determine such enzymic activities and the underlying mechanisms involved in OMPs biotransformation. This task has proven to be difficult due to the lack of information about the enzymic processes and the complexity of the biol. systems present in activated sludge. In this paper, a continuous aerobic heterotrophic reactor following 20 OMPs at environmental concentrations was operated to (i) assess the potential of heterotrophs during the cometabolic biotransformation of OMPs, (ii) identify biotransformation reactions catalyzed by aerobic heterotrophs and (iii) predict possible heterotrophic enzymic activities responsible for such biotransformations. Contradicting previous reports on the dominant role of nitrifiers in OMPs removal during activated sludge treatment, the heterotrophic population proved its capacity to biotransform the OMPs to extents equivalent to reported values in nitrifying activated sludge plants. Besides, 12 transformation products potentially formed through the activity of several enzymes present in heterotrophs, including monooxygenases, dioxygenases, hydrolases and transferases, were identified. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Recommanded Product: 140-66-9 It has been shown to cause harm to vertebrate male reproductive systems.

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Pijovic, Milena;Manic, Nebojsa;Anicijevic, Dragana Vasic;Krstic, Aleksandar;Mitric, Miodrag;Matic, Tamara;Jankovic, Bojan published 《Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study》. The research results were published in《Diamond and Related Materials》 in 2022.Computed Properties of C14H22O The article conveys some information:

Pyrolytic tire (PT) chars were first produced from waste car tires (WCT) through carbonization process at 800 °C, for different retention times. Then, best PT-char sample by its physicochem. properties (WCT 800(1 h)) was further tested for its ability to adsorb Rhodamine B (RhB) dye from aqueous solutions Structural characterization of synthesized material showed existence of graphene-based material, with average pore diameter of 22.8 nm and sp. surface area of 55.8 m2·g-1. Obtained carbon material meets specifications of com. carbon black (CB). The yield of 33.6% of CB recovered has been achieved. Under the optimal conditions, 99.57% of RhB was removed. Adsorption of RhB obeys pseudo second-order model and Langmuir isotherm model. DFT (the d. functional theory) was revealed that effective bonding of RhB onto WCT 800 originates from π-electron interactions with aromatic moieties and chem. (or at least the electrostatic) interactions, between pos. nitrogen and electron-rich surface groups. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Computed Properties of C14H22O It has been shown to cause harm to vertebrate male reproductive systems.

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Recommanded Product: 140-66-9《Chemical design of hydrogels with immobilized laccase for the reduction of persistent trace compounds in wastewater》 was published in 2021. The authors were Horn, Christoph;Pospiech, Doris;Allertz, Peter J.;Mueller, Martin;Salchert, Katrin;Hommel, Rolf, and the article was included in《ACS Applied Polymer Materials》. The author mentioned the following in the article:

Hydrogels with immobilized enzymes are increasingly applied in biocatalytic industrial processes. Here, polymer hydrogels containing 2-hydroxyethyl methacrylate (HEMA), itaconic acid (ITA), (2-((2-(ethoxycarbonyl)prop-2-en-1-yl)oxy)ethyl) phosphonic acid (ECPPA), and N,N′-diethyl-1,3-bis(acrylamido)propane (BAAP) as the cross-linker are synthesized by UV-initiated radical polymerization Laccase from Trametes versicolor (LAC) is modified by reaction with itaconic anhydride (ITAn) yielding the LAC-immobilized monomer ITA-LAC with enhanced enzyme activity. ITA-LAC paves the way to an in situ method for enzyme immobilization. Hydrogels with HEMA, ECPPA, and BAAP with stepwise varied chem. composition and functionalization are prepared The influence of the composition on the morphol., the swelling behavior, the mech. stability, and the enzymic activity is studied. The polymerization is monitored by the conversion of double bonds with in situ attenuated total reflection Fourier transform IR (ATR-FTIR) spectroscopy. The polymerization of HEMA is complete after 10 min of UV exposure, whereas hydrogels of HEMA/ITA/ECPPA (85/5/10) with 5 mol % cross-linker require 30 min. These hydrogels are compared with those containing ITA-LAC instead of ITA. The covalent binding of LAC is proven by ATR-FTIR spectroscopy and results in an enhanced enzyme activity. The incorporation of ECPPA induces pH-dependent swelling with an equilibrium degree of swelling of up to 6 at pH 8. Only a weak influence of temperature on the degree of swelling is found. The morphol. strongly depends on the hydrogel composition LAC-ITA hydrogels are characterized by an open morphol. providing access to catalytic centers. The enzyme-immobilized hydrogels are used as granules as well as coatings on porous Al₂O₃ ceramic substrates as biocatalysts to convert models for organic trace compounds [bisphenol A (BPA), diclofenac, p-chlorophenol (pCP), 17α-ethinylestradiol (EED), triclosan, paracetamol, and 4-tert-octylphenol]. The highest conversion after 24 h in water is achieved for triclosan (>90%), while pCP, BPA, and EED reach a conversion between 60% and 70%. The conversions are even higher in citrate buffer.4-tert-Octylphenol (cas: 140-66-9) were involved in the experimental procedure.

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).Recommanded Product: 140-66-9

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Alcohol – Wikipedia,
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