Tag: M.W=600-700

Rogers, Douglas published the artcileIopamidol as an oral contrast media for computed tomography: a taste comparison to iohexol, diatrizoate sodium, and barium sulfate., Name: Diatrizoic Acid, the main research area is Computed tomography; Oral contrast; Palatability; Taste.

OBJECTIVES: The objective of this study is to compare the palatability of iopamidol and iohexol. METHODS: This was a blinded and randomized trial in which fifty healthy subjects taste tested iopamidol (Isovue, Bracco Diagnostics), iohexol (Omnipaque, GE Healthcare), diatrizoate meglumine and diatrizoate sodium solution (Gastrografin, Bracco Diagnostics), and barium sulfate suspension 2.1% w/v, 2.0% w/w (READI-CAT2, E-Z-EM). Participants scored palatability on a continuous scale from 0 to 40 (0 = intolerable, 10 = unpleasant but tolerable, 20 = neutral, 30 = kind of like, 40 = strongly like). RESULTS: Mean scores (SD/SEM) for the contrast agents (n = 50) were iopamidol = 21.0 (8.4/1.2); iohexol = 21.8 (7.1/1.0); Gastrografin = 16.8 (9.6/1.4); and barium = 23.7 (9.1/1.3). One-way ANOVA equality of means test shows rejection of the hypothesis that the means are equal (F* = 6.550, p = .000). Post hoc testing demonstrates Gastrografin to be significantly less preferred to barium (p = .000) and iohexol (p = .012). No difference was found between iopamidol and iohexol (p = .959). One-way ANOVA equality of means test of just iopamidol, iohexol, and barium does not reject the hypothesis that means are equal (F* = 1.778 and p = .174). CONCLUSION: There is no significant difference in palatability between iopamidol and iohexol, supporting the use of iopamidol as a viable alternative to iohexol as an oral contrast agent.

Abdominal radiology (New York) published new progress about Computed tomography; Oral contrast; Palatability; Taste. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Name: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Radjenovic, Jelena published the artcileRemoval of the X-ray contrast media diatrizoate by electrochemical reduction and oxidation, HPLC of Formula: 117-96-4, the main research area is xray contrast media diatrizoate electrochem reduction oxidation.

Due to their resistance to biol. wastewater treatment, iodinated X-ray contrast media (ICM) have been detected in municipal wastewater effluents at relatively high concentrations (i.e., up to 100 μg L-1), with hospitals serving as their main source. To provide a new approach for reducing the concentrations of ICMs in wastewater, electrochem. reduction at three-dimensional graphite felt and graphite felt doped with palladium nanoparticles was examined as a means for deiodination of the common ICM diatrizoate. The presence of palladium nanoparticles significantly enhanced the removal of diatrizoate and enabled its complete deiodination to 3,5-diacetamidobenzoic acid. When the system was employed in the treatment of hospital wastewater, diatrizoate was reduced, but the extent of electrochem. reduction decreased as a result of competing reactions with solutes in the matrix. Following electrochem. reduction of diatrizoate to 3,5-diacetamidobenzoic acid, electrochem. oxidation with boron-doped diamond (BDD) anodes was employed. 3,5-Diacetamidobenzoic acid disappeared from solution at a rate that was similar to that of diatrizoate, but it was more readily mineralized than the parent compound When electrochem. reduction and oxidation were coupled in a three-compartment reactor operated in a continuous mode, complete deiodination of diatrizoate was achieved at an applied cathode potential of -1.7 V vs SHE, with the released iodide ions electrodialyzed in a central compartment with 80% efficiency. The resulting BDD anode potential (i.e., +3.4-3.5 V vs SHE) enabled efficient oxidation of the products of the reductive step. The presence of other anions (e.g., chloride) was likely responsible for a decrease in I- separation efficiency when hospital wastewater was treated. Reductive deiodination combined with oxidative degradation provides benefits over oxidative treatment methods because it does not produce stable iodinated intermediates. Nevertheless, the process must be further optimized for the conditions encountered in hospital wastewater to improve the separation efficiency of halide ions prior to the electrooxidation step.

Environmental Science & Technology published new progress about Anodes. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, HPLC of Formula: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Locatelli, Marcello published the artcileFabric-Phase Sorptive Membrane Array As a Noninvasive In Vivo Sampling Device For Human Exposure To Different Compounds, Application of Diatrizoic Acid, the main research area is fabric sorption membrane array human exposure sampling device.

This study introduces an innovative device for the noninvasive sampling and chromatog. anal. of different compounds present in exhaled breath aerosol (EBA). The new sampling device, especially in light of the recent COVID-19 pandemic that forced many countries to impose mandatory facemasks, allows an easy monitoring of the subject′s exposure to different compounds they may come in contact with, actively or passively. The project combines the advantages of a fabric-phase sorptive membrane (FPSM) as an in vivo sampling device with a validated LC-MS/MS screening procedure able to monitor more than 739 chems. with an overall anal. time of 18 min. The project involves the noninvasive in vivo sampling of the EBA using an FPSM array inserted inside an FFP2 mask. The study involved 15 healthy volunteers, and no restrictions were imposed during or prior to the sampling process regarding the consumption of drinks, food, or drugs. The FPSM array-LC-MS/MS approach allowed us to effectively exploit the advantages of the two complementary procedures (the convenient sampling by an FPSM array and the rapid anal. by LC-MS/MS), obtaining a powerful and green tool to carry out rapid screening analyses for human exposure to different compounds The flexible fabric substrate, the sponge-like porous architecture of the high-efficiency sol-gel sorbent coating, the availability of a large cache of sorbent coatings, including polar, nonpolar, mixed mode, and zwitterionic phases, the easy installation into the facemask, and the possibility of sampling without interrupting regular activities provide FPSMs unparalleled advantages over other sampling techniques, and their applications are expected to expand to many other clin. or toxicol. studies.

Analytical Chemistry (Washington, DC, United States) published new progress about Drugs. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Singer, Heinz P. published the artcileRapid Screening for Exposure to “”Non-Target”” Pharmaceuticals from Wastewater Effluents by Combining HRMS-Based Suspect Screening and Exposure Modeling, Quality Control of 117-96-4, the main research area is rapid screening exposure nontarget pharmaceutical wastewater; liquid chromatog high resolution mass spectrometry suspect modeling.

Active pharmaceutical ingredients (APIs) have raised considerable concern over the past decade due to their widespread detection in water resources and their potential to affect ecosystem health. This triggered many attempts to prioritize the large number of known APIs to target monitoring efforts and testing of fate and effects. However, so far, a comprehensive approach to screen for their presence in surface waters has been missing. We explore a combination of an automated suspect screening approach based on liquid chromatog. coupled to high-resolution mass spectrometry and a model-based prioritization using consumption data, readily predictable fate properties and a generic mass balance model for activated sludge treatment to comprehensively detect APIs with relevant exposure in wastewater treatment plant effluents. The procedure afforded the detection of 27 APIs that had not been covered in our previous target method, which included 119 parent APIs. The newly detected APIs included 7 compounds with a high potential for bioaccumulation and persistence, and also 3 compounds that were suspected to stem from point sources rather than from consumption as medicines. Anal. suspect screening proved to be more selective than model-based prioritization, making it the method of choice for focusing anal. method development or fate and effect testing on those APIs most relevant to the aquatic environment. However, we found that state-of-the-practice exposure modeling used to predict potential high-exposure substances can be a useful complement to point toward oversights and known or suspected detection gaps in the anal. method, most of which were related to insufficient ionization.

Environmental Science & Technology published new progress about Drugs. 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

Campos-Manas, Marina Celia published the artcileFast determination of pesticides and other contaminants of emerging concern in treated wastewater using direct injection coupled to highly sensitive ultra-high performance liquid chromatography-tandem mass spectrometry, Synthetic Route of 117-96-4, the main research area is pesticide pollutant wastewater direct injection UHPLC mass spectrometry; Contaminants of emerging concern (CECs); Direct injection; Liquid chromatography–mass spectrometry (LC–MS/MS); Microcontaminants; Multiresidue analysis; Treated wastewater.

It is well known that wastewater treatment plant (WWTP) effluents usually contain micropollutants such as pharmaceuticals (or their transformation products, TPs) or pesticides, which is a major issue when evaluating their possible reuse (e.g. for irrigation in agriculture). In search for an improved accuracy and simplicity, methods based on the direct injection of the sample (DI) represent a recent trend taking advantage of the increasing sensitivity of new mass spectrometry (MS) instruments. Thus, the present study shows the development and validation of a DI-based method by ultra-high-performance liquid chromatog. quadrupole-linear ion trap analyzer (UHPLC-QqLIT-MS/MS). The proposed method was applied to the monitoring of 115 organic microcontaminants (including pharmaceuticals, TPs and pesticides) at the ng L-1/μg L-1 level in wastewater effluents from urban WWTPs. Sample pre-treatment was reduced to acetonitrile addition and filtration of the mixture previous to LC-MS anal. Total anal. time was <15 min. A subsequent validation protocol was carried out in treated WW (TWW), following indications of SANTE and Eurachem Guidelines. Linearity and matrix effect were evaluated in the range of 10-1000 ng L-1. 70% of the analytes showed a moderate matrix effect (â‰?5%). Trueness (expressed as recovery) and precision (calculated as relative standard deviation, RSD) were evaluated at four concentration levels (20, 50, 500 and 1000 ng L-1) in TWW samples. The LODs ranged from 1 to 357 ng L-1 and the LOQs from 10 to 500 ng L-1. 92% of the compounds showed limits of quantification â‰?00 ng L-1. In most cases, mean recoveries were in the range 70-120%, and RSD values were â‰?0%. The validated method was successfully applied to the anal. of 10 TWW samples, demonstrating the occurrence of 67 target compounds at concentration levels from 26705 ng L-1 (4-aminoantipyrine) to 10 ng L-1 (tebuconazole and bezafibrate). Journal of Chromatography A published new progress about Drugs. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Peysson, William published the artcileDetermination of 136 pharmaceuticals and hormones in sewage sludge using quick, easy, cheap, effective, rugged and safe extraction followed by analysis with liquid chromatography-time-of-flight-mass spectrometry, Related Products of isoquinoline, the main research area is pharmaceutical hormone determination sewage sludge; extraction analysis liquid chromatog time flight mass spectrometry.

The aim was to develop an anal. method for the determination of a wide range of hormonal steroids and pharmaceutical compounds in sewage sludge. Thus, 136 substances were selected, including 119 pharmaceuticals and 17 hormonal steroids. An innovative sample preparation procedure based on the quick, easy, cheap, effective, rugged and safe (QuEChERS) method was developed. The anal. was then performed using liquid chromatog. coupled with time-of-flight mass spectrometry. This anal. procedure was validated by evaluating the specificity, quadratic curve fitting, recovery, reproducibility and limits of detection and quantification. The method allows the anal. of the majority of the target compounds with limits of detection 1-2500 ng/g, depending on the nature of the substance. The protocol was applied to various types of sludge (limed, digested, dried, liquid and composted) from several sewage works in France. Among the target compounds, 34 were quantified at levels �000 ng/g. Among the most commonly detected pharmaceuticals were the antiemetic domperidone (mean concentration 769 ng/g) and the antiepileptic lamotrigine (mean concentration 31 ng/g) whose presence had, to our knowledge, never been shown in sludge.

Journal of Chromatography A published new progress about Drugs. 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

Hernandez, Felix published the artcileLC-QTOF MS screening of more than 1000 licit and illicit drugs and their metabolites in wastewater and surface waters from the area of Bogota, Colombia, Name: Diatrizoic Acid, the main research area is LC QTOF MS screening licit illicit drug metabolite wastewater; screening licit illicit drug metabolite wastewater surface water Colombia.

A large screening of �000 emerging contaminants, focused on licit and illicit drugs and their metabolites, has been made in urban wastewaters (both influent and effluent) and surface waters from the area of Bogota, Colombia. After a simple generic solid-phase extraction (SPE) step with Oasis hydrophilic-lipophilic balanced (HLB) cartridges, analyses were made by ultra HPLC coupled to quadrupole time-of-flight mass spectrometry (UHPLC-QTOF MS) under MSE mode (sequential acquisition of mass spectra at low energy (LE) and high collision energy (HE)). Accurate mass measurements and the information provided by MSE on the presence of the (de)protonated mol. and fragment ions allowed the reliable identification of the compounds detected, even without reference standards being available in some cases (tentative identification). The compounds most frequently found were acetaminophen/paracetamol, carbamazepine and its dihydro-dihydroxylated metabolite, clarithromycin, diclofenac, ibuprofen, gemfibrozil, lincomycin, losartan, valsartan, the 2 metabolites of metamizole (4-acetamido-antipyrine and 4-formylamino-antipyrine), sucralose, and cocaine and its main metabolite benzoylecgonine. Caffeine, the sweetener saccharin, and 2 hydroxylated metabolites of losartan were tentatively identified in almost all samples analyzed. Pharmaceutical lidocaine was tentatively identified and subsequently confirmed with reference standard For the 1st time, a general overview of the occurrence of drugs and their metabolites in the aquatic environment of Colombia has been reported. In the near future, target methodologies, typically based on liquid chromatog. coupled to tandem mass spectrometry (LC-MS/MS), will need to be set up for accurate and sensitive quantification of the contaminants selected on the basis on the information provided here.

Analytical and Bioanalytical Chemistry published new progress about Drugs. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Name: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zou, Hongyan published the artcileUsing Chemical Benchmarking to Determine the Persistence of Chemicals in a Swedish Lake, Quality Control of 117-96-4, the main research area is chem benchmarking persistence compound Swedish lake.

Two approaches for measuring persistence in the field were compared: the chem. mass balance approach, and a novel chem. benchmarking approach. Ten pharmaceuticals, an x-ray contrast agent, and an artificial sweetener were studied in a Swedish lake. Acesulfame K was selected as a benchmark to quantify persistence using the chem. benchmarking approach. The 95% confidence intervals of the half-life for transformation in the lake system ranged from 780-5700 days for carbamazepine to <1-2 days for ketoprofen. The persistence estimates obtained using the benchmarking approach agreed well with those from the mass balance approach (1-21% difference), indicating that chem. benchmarking can be a valid and useful method to measure the persistence of chems. under field conditions. Compared to the mass balance approach, the benchmarking approach partially or completely eliminates the need to quantify mass flow of chems., so it is particularly advantageous when the quantification of mass flow of chems. is difficult. The benchmarking approach allows for ready comparison and ranking of the persistence of different chems. Environmental Science & Technology published new progress about Drugs. 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

Meinel, F. published the artcilePilot-scale study of powdered activated carbon recirculation for micropollutant removal, Safety of Diatrizoic Acid, the main research area is diclofenac removal efficiency powd activated carbon wastewater treatment.

Adsorption onto powd. activated carbon (PAC) is a promising technique for the removal of organic micropollutants (OMPs) from treated wastewater. To enhance the adsorption efficiency, PAC is recycled back into the adsorption stage. This technique was examined in pilot scale in comparison to a reference without recirculation. Coagulation with Fe3+ was carried out simultaneously to adsorption. Extensive OMP measurements showed that recirculation significantly increased OMP eliminations. Thus, significant PAC savings were feasible. The PAC concentration in the contact reactor proved to be an important operating parameter that can be surrogated by the easily measurable total suspended solids (TSS) concentration OMP eliminations increased with increasing TSS concentrations At 20 mg PAC L-1 and 2.8 g TSS L-1 in the contact reactor, well-adsorbable carbamazepine was eliminated by 97%, moderately adsorbable diclofenac was eliminated by 92% and poorly-adsorbable acesulfame was eliminated by 54% in comparison to 49%, 35% and 18%, resp., without recirculation. The recirculation system represents an efficient technique, as the PAC’s adsorption capacity is practically completely used. Small PAC dosages yield high OMP eliminations. Poorly-adsorbable gabapentin was eliminated to an unexpectedly high degree. A laboratory-scale biomass inhibition study showed that aerobic biodegradation removed gabapentin in addition to adsorption.

Water Science and Technology published new progress about Biomass. 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

Sjerps, Rosa M. A. published the artcileProjected impact of climate change and chemical emissions on the water quality of the European rivers Rhine and Meuse: A drinking water perspective, Safety of Diatrizoic Acid, the main research area is climate change wastewater river drinking water pollution.

Low river discharges of the rivers Rhine and Meuse are expected to occur more often and more prolonged in a changing climate. During these dry periods the dilution of point sources such as sewage effluents is reduced leading to a decline in chem. water quality. This study projects chem. water quality of the rivers Rhine and Meuse in the year 2050, based on projections of chem. emissions and two climate scenarios: moderate and fast climate change. It focuses on specific compounds known to be relevant to drinking water production, i.e. four pharmaceuticals, a herbicide and its metabolite and an artificial sweetener. Hydrol. variability, climate change, and increased emission show a significant influence on the water quality in the Rhine and Meuse. The combined effect of changing future emissions of these compounds and reduced dilution due to climate change has leaded to increasing (peak) concentrations in the river water by a factor of two to four. Current water treatment efficiencies in the Netherlands are not sufficient to reduce these projected concentrations in drinking water produced from surface water below precautionary water target values. If future emissions are not sufficiently reduced or treatment efficiencies are not improved, these compounds will increasingly be found in drinking water, albeit at levels which pose no threat to human health.

Science of the Total Environment published new progress about Climate. 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