organics analysis Articles
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Evaluation of a New Analytical Trap for Gasoline Range Organics Analysis
Abstract Pharmaceutical cleaning validation is a multistep process. The Food and Drug Administration (FDA) has published guidelines on cleaning validation as far back as 1963 in Good Manufacturing Practices (GMP) Regulations (Part 133.4). In general, the FDA expects firms to have written Standard Operating Procedures (SOP’s) detailing the cleaning processes of their manufacturing equipment ...
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Regional Taiwan rainfall frequency analysis using principal component analysis, self-organizing maps and
L -momentsThe objective of this paper is to propose an approach, which consists of principal component analysis (PCA), self-organizing maps (SOM) and the L-moment method, for improving estimation of desired rainfall quantiles of ungauged sites. Firstly, PCA is applied to obtain the principal components. Then SOM is applied to group the rain gauges into specific clusters and the number of clusters can be ...
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New Analytical Chemistry Paper on CHARON PTR-TOFMS Performance
Bulk Organic Aerosol Analysis by PTR-MS with High Precision & Accuracy Very recently, we have published a technical note in Analytical Chemistry introducing an improved methodology for the determination of organic aerosol properties with CHARON PTR-TOFMS. By analysis of a large set of pure compounds we were able to derive an algorithm to correct for ionic fragmentation. Therefore CHARON is ...
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Effects of tannic acid on membrane fouling and membrane cleaning in forward osmosis
The fouling behavior during forward osmosis (FO) was investigated. Tannic acid was used as a model organic foulant for natural organic matter analysis since the main characteristics are similar, and calcium ions were added at different concentrations to explore the anti-pollution capability of FO membranes. The initial permeate flux and calcium ions strength were varied in different operating ...
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Photodegradation of chlorpyrifos in water by UV/H2O2 treatment: toxicity evaluation
Chlorpyrifos (CP) is an organophosphorus pesticide widely used in agriculture. Due to its toxicity, it has been necessary to develop a treatment to eliminate the environmental wastes generated by this substance. The combination of UV radiation and hydrogen peroxide seemed an interesting option to reduce the concentration of CP in water, as it has proved to be a simple and effective method to ...
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Elemental Analysis - Automation Without Limits
Fully automated carbon, sulfur, chlorine, and nitrogen analysis in liquid and solid samples is possible! Thanks to the multi-matrix sampler you have the security of being able to meet the most varied analytical challenges in next to no time with one single system - the multi EA® 5000. Its intelligent construction facilitates the highest sample throughput ever in organic elemental analysis. ...
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Metal leaching, acidity and altitude confine benthic macroinvertebrate community composition in Andean streams
Andean streams drain metal‐rich bedrock and are subjected to an extreme altitude gradient, which may create highly selective conditions for life. The aim of the present study was therefore to evaluate the combined effects of metals and altitude on benthic macroinvertebrate community composition in Andean streams. Metal‐rich sites were characterized by high metal concentrations and low pH, and ...
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Microplastic in water - Occurrence, risks and removal
1. Microplastics - what's the problem? Social and industrial progresses continuously improve our everyday life by yielding new materials, which fit our needs and stand out by their specially designed material properties. Hardly any other material has affected world's mass consumption and industry as plastics. These polymers feature plastic or elastic properties, thermal and biological stability ...
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Analysis of Organic plating Bath Additives and Chemicals by Isocratic HPLC
In today’s world, over 75% of all metal surfaces on manufactured metal “items” have some sort of plated finish on them. From highchromium steel car bumpers to zinc diecast toys to Silver-contact electronic components. While the primary composition of these plating baths are inorganic (the metals and salts that are used to make up the desired metal finish), almost all types of plating baths; from ...
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Total Organic Carbon Analysis for Purified Water and Water for Injection
Abstract In pharmaceuticals, water, specifically Purified Water (PW) and Water for Intravenous Injection (WFI), is vital for drug preparation. Producing and ensuring the cleanliness of this water entails very strict quality control and precise analytical testing methods. The United States Pharmacopeia (USP) and Japanese Pharmacopeia (JP) have promoted Total Organic Carbon (TOC) analysis as the ...
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Audit Analysis: Know Why It is Important?
Audit analysis is all about paying attention to the quality of data collected to make better and informed business decisions. It is undoubtedly a critical component of your quality management process to identify the critical areas of improvement and maintain business operational excellence. For many organizations, audit analysis is a time-consuming and labor-intensive task. It might be due to a ...
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Unconventional resource evaluation: Kockatea Shale, Perth Basin, Western Australia
Organic-rich shales occur in the Kockatea Shale Formation, Permo-Triassic of the Perth Basin (Western Australia) and have been investigated to characterise it as a potential shale gas unit. Classic sedimentological investigation methods, including core descriptions and thin section microscopy, were coupled with standardised organic geochemical analysis procedures, such as TOC determination and ...
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Electromagnetically vibrated Solid-Phase Microextraction for the analysis of organic compounds
A newly developed electromagnetically vibrated Solid-Phase Microextraction (SPME) device for extracting 1, 4-dichlorobenzene and toluene from aqueous matrices was evaluated in terms of sorption equilibrium time, precision, and detection level relative to three other more conventional extraction techniques involving SPME, viz., static, magnetic stirring, and fibre insertion/retraction. ...
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Precision solution for FID gas
The Flame Ionisation Detector (FID) detector is the most commonly used detector in Gas Chromatography with around 90% of GCs equipped with at least one. The FID can be used in almost any organic analysis, and is sensitive down to the parts-per-billion (PPB) range, which is the reason for its widespread use in GC analysis in areas from oil and gas, to food and pharmaceuticals. The FID works by ...
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A Guide for Analyzing Low-Level Total Organic Carbon Using a UV/ Persulfate Analyzer
Abstract Total Organic Carbon (TOC) analysis is a fast and efficient analytical technique that can be easily implemented in pharmaceutical manufacturing for cleaning validation due to the all-inclusive nature of the test for carbon. It can be used to test for residues of previously manufactured products, cleaning detergents, solvents, by-products, and degradants. Although the current requirement ...
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Fate of organic pollutants in a pilot-scale membrane bioreactor-nanofiltration membrane system at high water yield in antibiotic wastewater treatment
A double membrane system combining a membrane bioreactor (MBR) with a nanofiltration (NF) membrane at the pilot scale was tested to treat real antibiotic wastewater at a pharmaceutical company in Wuxi (China). The water yield of the pilot system reached over 92 ± 5.6% through recycling the NF concentrate to the MBR tank. Results showed that the pilot scale system operated in good ...
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Macrolide antibiotics removal using a circulating TiO2-coated paper photoreactor: parametric study and hydrodynamic flow characterization
The present work investigates the photocatalytic degradation efficiency of biorecalcitrant macrolide antibiotics in a circulating tubular photoreactor. As target pollutants, spiramycin (SPM) and tylosin (TYL) were considered in this study. The photoreactor leads to the use of an immobilized titanium dioxide on non-woven paper under artificial UV-lamp irradiation. Maximum removal efficiency ...
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Degradation of malachite green by dielectric barrier discharge plasma
Oxidative decomposition of aqueous organic pollutant malachite green (MG) was studied in a dielectric barrier discharge reactor operated under ambient conditions. Total organic carbon content analysis confirmed the mineralization of the pollutant leading to the formation of carbon dioxide, which was confirmed by an infrared analyzer. Typical results indicated that the degradation rate increases ...
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Total Organic Carbon (TOC) Analysis
What is Total Organic Carbon (TOC) Analysis? Total Organic Carbon (TOC) is the amount of carbon that is found in an organic compound. It has become an important indication of approximate levels of organic contamination and can therefore be used as a suggestion of water quality. In many cases, Total Organic Carbon analysis is used as an on-going monitor of change or lack of change in organic ...
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Simplifying the Process: Automated USP 643 / EP 2.2.44 Purified Water and Water For Injection Testing Using A Next Generation TOC Analyzer
Background and Objective The United States Pharmacopoeia (USP) and European Pharmacopoeia (EP) 2.2. 44 monographs provide guidelines and requirements for Total Organic Carbon (TOC) analysis of water for injection and purified water. 1,2 These methods present a system suitability test that compares the recovery of a standard solution (rs) of sucrose, a relatively easy compound to oxidize, and the ...
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