Tag: M.W=600-700

Boleda, M. Rosa published the artcileValidation and uncertainty estimation of a multiresidue method for pharmaceuticals in surface and treated waters by liquid chromatography-tandem mass spectrometry, SDS of cas: 117-96-4, the main research area is validation uncertainty estimation multiresidue pharmaceutical water; liquid chromatog tandem mass spectrometry.

The estimation of measurement uncertainty associated with quant. results is essential to assure the reliability of anal. methods and mandatory when a laboratory implements ISO standard 17025. A quant. multi-residue method based on solid-phase extraction (SPE) and ultra-performance liquid chromatog. tandem mass spectrometry detection (LC-MS/MS) was developed and validated for the anal. of 53 pharmaceuticals (analgesics, anti-inflammatories, antibiotics, lipid regulating agents, cholesterol lowering stating agents, gastric drugs, x-ray, and miscellaneous compounds such as sildenafil, prednisone, triclosan, chlorhexidine and miconazole) in surface and drinking waters. A full validation of the method, according to ISO standard 17025 procedure, was performed. Linearity (0.01-250 ng/L), intra-day precision (3-19% RSD in surface water and 2-19% RSD in drinking water) and inter-day precision (3-16% RSD in surface water and 1-18% RSD in drinking water), matrix effects (low matrix effects were observed for 50% of compounds in both matrixes), limits of quantification (0.2-40 ng/L in surface water and 0.2-30 ng/L in drinking water) were calculated The recoveries at 100 ng/L were >80% for 72 and 79% of the target compounds in surface and drinking waters, resp. The information obtained from the full method validation was used to estimate the expanded uncertainty and the uncertainties contributions of the different individual steps of the method for the determination of pharmaceuticals at trace levels in waters. Expanded relative uncertainties were 6-23% being the uncertainty associated with reproducibility the main contribution.

Journal of Chromatography A published new progress about Analgesics. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, SDS of cas: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhao, Xiaodan published the artcileEnhanced abatement of organic contaminants by zero-valent copper and sulfite, Formula: C11H9I3N2O4, the main research area is copper sulfite iohexol organic contaminant oxidation waste water treatment.

Sulfate radicals (SO4·-) are highly efficient for the degradation organic pollutants. SO4·- can be produced by activation of sulfites, yet actual heterogeneous activators exhibit a lower reactivity for activation of sulfite to SO4·- at pH 7.0-8.0. Here we hypothesized that zero-valent copper can activate sulfite under mild conditions. We tested the reaction with iohexol, diatrizoate, atrazine, benzoic acid, and p-chlorobenzoic acid contaminants. Reactive radicals were identified by ESR, fluorescence spectrometry, and radical scavenging experiments Results show up to 90% abatement of contaminants by combining sulfite with zero-valent copper at pH 8.0. Moreover, zero-valent copper maintains a crystalline stability and satisfactory reusability with iohexol abatement efficiency up to 80% after five runs.

Environmental Chemistry Letters published new progress about Atmosphere. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mahouachi, Lamia published the artcileNatural clay as a sorbent to remove pharmaceutical micropollutants from wastewater, Safety of Diatrizoic Acid, the main research area is diatrizoic acid iopamidol metformin removal wastewater clay sorbentpharmaceutical micropollutant; Micro-pollutants; Montmorillonite; Natural adsorbent; Removal capacity; Water treatment.

Worldwide, the aquatic environment is contaminated by micro-pollutants, such as ingredients of personal care products, pesticides and pharmaceuticals. This contamination is one of the major environmental issues of global concern. Adsorption is one of approach, which has been most extensively discussed within recent years for the reduction of the input of micro-pollutants into the environment. In the present study, the natural clay classified as Na-montmorillonite, was characterized and tested for its potential to remove four model compounds representing different polarity and ionizability: (i) diatrizoic acid (DAT), (ii) iopamidol (IOP), (iii) metformin (MTF), and (iv) carbamazepine (CBZ). The adsorption efficiency of clay was evaluated by initial compound concentration, effect of pH, contact time and temperature The results indicated that clay was able to remove the pharmaceuticals from aqueous medium with an efficiency of 70% for CBZ and MTF. In contrast, clay showed a lower removal of 30% for DAT and no removal for IOP. The results indicate that clay could rapidly and efficiently reduce the concentration of CBZ and MTF, which could provide a solution to remove some substances, without undesirable byproduct generation. However, this study clearly demonstrated that removal rates strongly depend on the compound Albeit chem. structure may play a role for the different degree of removal, this study could not completely explain the sorption mechanism between sorbent-sorbate interactions.

Chemosphere published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Safety of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jiang, J.-Q. published the artcileDrinking water treatment by in situ generated ferrate(VI), COA of Formula: C11H9I3N2O4, the main research area is ferrate organic micropollutant disinfection coagulation drinking water treatment.

The present study aims to investigate the efficiency of on-site produced ferrate(VI) for drinking water treatment as well as for the removal of micro pollutants. The study examined and validated the laboratory electrochem. production of ferrate(VI) and tested water treatment efficiency of the resulting ferrate(VI) in comparison with that of FeClSO4 and poly-aluminum chloride (PACl). The performance of water treatment was compared by the removal efficiency of turbidity, dissolved organic carbon, microbial count and trace organic micro pollutants. Major observations were that 0.5 mg/L of ferrate(VI) as Fe was sufficient to remove most of the contaminants and achieve complete disinfection irresp. of the original microbial counts. Ferrate(VI) has considerable oxidation potential to degrade commonly occurring trace organic micropollutants (other than melamine) in the Danube River water. In contrast, FeClSO4 or PACl cannot remove any trace micro pollutants.

Desalination and Water Treatment published new progress about Alkalinity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Azerrad, Sara P. published the artcileTransformation of X-ray contrast media in reverse osmosis brines by advanced oxidation processes, Application In Synthesis of 117-96-4, the main research area is iopromide diatrizoate RO brine advanced oxidation process wastewater treatment.

The transformation of two X-rays contrast media iopromide (IOPr; non-ionic) and diatrizoate (DTZ; ionic) in reverse osmosis (RO) brines during UVA-TiO2 oxidation was investigated. The scavenging effect of chlorides, alkalinity and fulvic acid (HA) was comparatively evaluated against ultrapure water. The transformation of both compounds followed a pseudo-first reaction order, but rate of IOPr oxidation was higher than DTZ regardless of the water matrix. In ultrapure water, 98% IOPr transformation was achieved compared to only 42% for DTZ after a 6 h experiment In contrast, transformation was significantly reduced in RO brines with only 18 and 9% transformation for IOPr and DTZ, resp., whereas chlorides displayed very low to none scavenging effect, fulvic acid and alkalinity decreased rate constants by about 50% due to competitive radicals scavenging. The scavenging effect of HA was more evident for DTZ than IOPr. The ratio of deiodination/transformation was higher in DTZ, indicating that the initial transformation involves deiodination, e.g. takes place predominantly in the triiodinated skeleton. In contrast, the ratio of deiodination/transformation was lower in IOPr, indicating that the initial transformation proceeds without deiodination, e.g. takes place predominantly in the side chains. Finally, in both cases, kinetic experiments showed that oxidation leads to iodide evolution without iodate formation.

Desalination and Water Treatment published new progress about Alkalinity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application In Synthesis of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Dong, Zheng-Yu published the artcileThe application of UV-C laser in persulfate activation for micropollutant removal: Case study with iodinated X-ray contrast medias, Recommanded Product: Diatrizoic Acid, the main research area is UV laser micropollutant removal iodinated X ray contrast media; Electron shuttle; Hydroxyl radical; Iodinated X-ray contrast media; Sulfate radical; UV-C laser.

A novel light source UV-C laser was applied in persulfate (PS) activation to effectively remove iodinated X-ray contrast medias (ICMs) including iohexol (IOX), iopamidol (IPM) and diatrizoate (DTZ) in this study. Significant ICMs degradation was observed in UV-C laser/PS systems with pseudo first-order rate constants of 0.022-0.067 s-1. Sulfate radicals (SO·-4) were the main active species in the three ICMs degradation, and the steady-state concentrations ([SO·-4]ss) were 3.629 x 10-11 M (IOX), 1.702 x 10-11 M (IPM) and 1.148 x 10-11 M (DTZ), resp. Under the high intensity of UV-C laser, the optimal reaction efficiency was achieved at pH = 7.0 with PS concentration of 1.0 mM, and the degradation efficiency for IOX reached 93.8% within only 40 s. Both bicarbonate and chloride ions could inhibit the three ICMs degradation and the inhibition rate increased with the increase of ions concentration The kinetic models were established and the steady-state concentrations of radicals were calculated D. functional theory (DFT) calculations combined with experiments were used to derive the reaction pathways for three ICMs. Cyclic voltammetry measurements detected a lower redox potential peak in IOX degradation, revealing the existence of electron shuttles under the UV-C laser irradiation to promote the redox reaction. This study is the first report of UV-C laser activation of persulfate. It is a new advanced oxidation process mediated by very effective photolysis and active species formation.

Science of the Total Environment published new progress about Alkalinity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Boehringer, Bertram published the artcilePolymer-based Spherical Activated Carbons: From Adsorptive Properties to Filter Performance, Quality Control of 117-96-4, the main research area is carbonized spherical polymer activated carbon adsorbent manufacture; porosity adsorption carbonized polymer steam carbon dioxide activation; air purification adsorption carbonized polymer activated carbon; water purification adsorption carbonized polymer activated carbon.

Polymer-based spherical activated carbon (PBSAC), produced by means of carbonization and subsequent activation of a polymeric precursor in a batch process represent adsorbents with adjustable pore size distribution and adsorption characteristics. This flexibility results from batch operation and from the possibility to combine different activation media, therefore controlling the mechanisms of pore generation. The geometry and the mech. properties of PBSAC allow for structuring of filter media e.g., for adsorbent enlargement or fixation. Other intrinsic product properties such as roundness, high crush strength and high abrasion resistance of PBSAC offer advantages in various adsorption applications.

Chemie Ingenieur Technik published new progress about Adsorbents. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Quality Control of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Back, Jan O. published the artcileAdsorptive removal of micropollutants from wastewater with floating-fixed-bed gasification char, Recommanded Product: Diatrizoic Acid, the main research area is micro pollutant adsorptive removal floating ixedbed gasification char.

The global detection of organic micropollutants (OMPs) in waterbodies and the search for low-cost alternatives to fossil activated carbon have fostered research on the application of modified biochars in complex wastewater treatment plant (WWTP) effluents. Gasification char – a promising prospect for adsorptive OMP removal – was obtained as byproduct in a novel, multi-staged gasification process. The gasification system was designed for medium-scale energy production (530 kW combined heat and elec. power output) from spruce woodchips and relies on a floating-fixed-bed gasifier with a preceding pyrolysis step. For both tested adsorbents, high removal rates >90% of OMPs with high logD were found at an equivalent dosing of 60 mg l-1 FFBC â‰?10 mg l-1 PAC, whereas X-ray contrast agents exhibited lower affinity. The governing removal mechanisms are hydrophobic and π-interactions, pore-size effects and – to a limited extent – hydrogen bond formation. Dissolved organic matter in WWTP effluent inhibits OMP adsorption, as observed in decreasing isotherm fitting parameters. The investigated bio-adsorbent – derived from renewable energy, regional supplies, and a process lean in the use of chems. – could be an inexpensive alternative in adsorptive wastewater treatment.

Journal of Environmental Chemical Engineering published new progress about Adsorbents. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Cheng, Xinying published the artcileA comparative study on adsorption behavior of iodinated X-ray contrast media iohexol and amidotrizoic acid by magnetic-activated carbon, Related Products of isoquinoline, the main research area is iohexol amidotrizoic acid carbon Xray adsorption wastewater treatment; Adsorption mechanism; Amidotrizoic acid; Co-adsorption; Density functional theory; Iohexol; Magnetic activated carbon.

Abstract : As persistent and ubiquitous contaminants in water, iodinated X-ray contrast media (ICM) pose a non-negligible risk to the environment and human health. In this study, we investigated the adsorption behavior of two typical ICM compounds, iohexol (IOH) and amidotrizoic acid (DTZ), on magnetic activated carbon. Theor. investigations, using d. functional theory, identified the mol. structures and calculated the mol. diameters of IOH (1.68 nm) and DTZ (1.16 nm), which revealed that ICM could be adsorbed by mesopores and larger micropores. Therefore, magnetic activated carbon with a porous structure was prepared by the co-precipitation method to investigate the adsorption mechanism of IOH and DTZ. MAC-5 (magnetic activated carbon with a theor. iron oxide content of 37%) showed the best adsorption ability for both IOH and DTZ, with maximum adsorption capacities of 86.05 and 43.00 mg g-1, resp. Adsorption kinetics and isotherm models were applied to explore the mechanisms involved, and the effects of solution pH, initial concentration, temperature, ionic strength, and natural organic matter were also investigated. The pore filling effect, π-π stacking, hydrogen bonding, and electrostatic interaction, were found to be the main adsorption mechanisms. The co-adsorption data showed that competition may occur in ICM coexisting environments. Interestingly, the used MAC-5 could be successfully regenerated and its adsorption efficiency did not decrease significantly after five cycles, indicating that it is a promising adsorbent for ICM. The results from this study provide some new insights for the treatment of water containing ICM.

Environmental Science and Pollution Research published new progress about Adsorbents. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xu, Jian published the artcileCatalytic degradation of diatrizoate by persulfate activation with peanut shell biochar-supported nano zero-valent iron in aqueous solution, Category: isoquinoline, the main research area is catalytic degradation diatrizoate persulfate peanut biochar iron aqueous solution; degradation; diatrizoate; nano zero-valent iron; peanut shell biochar; persulfate activated.

An emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal of DTZ. The structure and morphol. of the nanocomposite materials were characterized by SEM, X-ray diffraction, Brunauer-Emmett-Teller measurements, and Fourier transform IR spectroscopy. The degradation of DTZ (20 mg L-1) was achieved by activating PS with the nanocomposite material. The removal of DTZ reached nearly 100% using 25 mM PS and 0.45 g L-1 nZVI/2BC (mass ratio of nZVI and BC at 1:2) nanocomposite material at pH 3.0 and 25°C. Influencing factors, such as dosages of nZVI/2BC and PS, temperature, and pH were also investigated. The mechanisms of PS activation with nZVI/2BC were discussed, including BC property, electron transfer, and the identification of free radicals in the reaction. The findings demonstrated that nZVI/BC-PS (peanut shell BC-supported nZVI activating PS) is a promising material for the treatment of refractory organic pollutants.

International Journal of Environmental Research and Public Health published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem