organics analysis Articles

  • 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 ...


    By Teledyne Tekmar

  • Regional Taiwan rainfall frequency analysis using principal component analysis, self-organizing maps and L-moments

    The 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 ...


    By IWA Publishing

  • 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 was ...


    By IWA Publishing

  • 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 ...


    By Inderscience Publishers

  • Free Guide to Start Incorporating Risk Analysis today - white paper

    Abstract There is universal agreement that having effective risk management practices is an essential component of good business planning. Respected risk management guidelines (ISO, COCO, NASA, etc) all state that Quantitative Risk Analysis should be an integral part of a high quality risk management process. The problem for many senior management teams is how to achieve this in ...


    By Vose Software

  • 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 ...


    By IWA Publishing

  • 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 ...


    By Ionicon Analytik Ges.m.b.H.

  • 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 ...


    By John Wiley & Sons, Ltd.

  • 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 ...


    By Teledyne Tekmar

  • 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 ...

  • 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 ...


    By IWA Publishing

  • 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. ...

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...

  • 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 ...


    By Buck Scientific Inc

  • US EPA Method 525.2 Semivolatiles by GC-MS on the Supelco SLB™-5ms

    US EPA Method 525.2 describes the procedure for the extraction and analysis of semivolatile organic compounds from drinking and source water. The compound list includes polynuclear aromatics, phthalates, pesticides, and polychlorinated biphenyls.  This application illustrates the separation of a majority of the single peak analytes listed in this method, using a SLB-5ms, 30 m x 0.25 mm I.D., ...


    By MilliporeSigma

  • Detection Limits of EPA Method 8260 with Static and Dynamic Headspace GC/MS Analysis

    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 set by ...


    By Teledyne Tekmar

  • 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 ...


    By Teledyne Tekmar

  • Organic wine between health and competitiveness

    Do factors, from the consumption side, blocking or promoting the development and diffusion of organic wine exist? What kind of relationship exists between the attention that consumers assign to the theme of environmental sustainability, their worries for matters of health and the spreading of organic wine? These questions led us to investigate the purchasing behaviour of organic products, ...


    By Inderscience Publishers

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