total organic carbon toc Articles
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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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Preventing trihalomethane formation: the ability of granular activated carbon and brimac media to remove colour and total organic carbons, from drinking water in the north west of Scotland
Background: Granular activated carbon (GAC) and Brimac media has been used for many years in water treatment works to reduce and remove colour and total organic carbon (TOCs). This reduces the formation of trihalomethanes (THMs) formed by disinfection with chlorine. The TOCs arise from humic and fulvic acids found in source waters for many, small, scattered remote communities in Scotland. A ...
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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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Oxidative degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) in subcritical and supercritical waters
Presence of chlorinated organic compounds in water bodies has become a concern among governments, health authorities and general public. Oxidation of organic compounds in water under high temperature and pressure is considered as a promising technique, but usefulness of the technique to mineralize 2,4-dichlorophenoxyacetic acid (2,4-D) is not well understood. This article aimed to elucidate ...
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TOC Analysis of 3% Hydrogen Peroxide (H2O2) Using the Teledyne Tekmar Lotix TOC Analyzer
Abstract Hydrogen peroxide (H2O2) is used in numerous industries and has a variety of uses including sterilization, wastewater treatment, bleaching and as a propellant. The analysis of hydrogen peroxide for total organic carbon (TOC) content is a quality control (QC) test used to ensure purity. This application note will demonstrate that the Teledyne Tekmar Lotix TOC analyzer is robust enough to ...
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Chemiluminescence detection for nitrogen containing compounds compared to other approved techniques
Abstract Nitrogen monitoring is important for process control, regulations, and economic reasons. There are several techniques that can be used to monitor nitrogen, some of which can be time consuming, labor intensive, and may have waste disposal concerns. This study examines using a high temperature combustion (HTC) Total Organic Carbon (TOC)/Total Nitrogen (TN) Analyzer with chemiliumunescence ...
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Choosing the appropriate TOC analyzer for your application?
Abstract In choosing a Total Organic Carbon (TOC) analyzer, among the many factors that need to be given consideration are not only the current instruments and their accessories available on the market, but specifically to their method of sample oxidation in relation to the sample matrix. Different oxidation techniques may affect the analytical data due to the components within the sample matrix. ...
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EPA Method 415.3 - Determination of TOC in Source Water and Drinking Water
Method 415.3 states that the measurement of Total Organic Carbon (TOC) and DOC must use a TOC instrument that oxidizes organic carbon in the water to create carbon dioxide gas, which is then measurable. The instruments are required to use one of two basic oxidation methods – either through combustion with an oxidizing gas, or through chemical oxidation with persulfate promoted by either UV ...
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Choosing the appropriate TOC analyzer for your application?
Abstract In choosing a Total Organic Carbon (TOC) analyzer, among the many factors that need to be given consideration are not only the current instruments and their accessories available on the market, but specifically to their method of sample oxidation in relation to the sample matrix. Different oxidation techniques may affect the analytical data due to the components within the sample ...
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Photodegradation of 4-chloronitrobenzene in the presence of aqueous titania suspensions in different gas atmospheres
The photocatalytic degradation of 4-chloronitrobenzene (4-CNB) was carried out using Degussa P25 TiO2 as photocatalyst in three different gas atmospheres: nitrogen, oxygen, and ozone. The total organic carbon (TOC) and inorganic anions including chloride, nitrite, and nitrate anions were measured to monitor the mineralization processes, while the degradation of 4-CNB and the formation of ...
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Analyzing Total Organic Carbon in Sea Water
Abstract The analysis of Total Organic Carbon (TOC) in seawater can be both challenging and expensive. The concentration of organic carbon in seawater is of considerable interest. The effect this matrix can have on TOC analyzers can lead to rapid consumable turnover, costly maintenance and repairs. Laboratories are continually looking to increase sample throughput, decrease overall cost of ...
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Industry Specific Applications For UV Technology TOC Reduction in microelectronics, pharmaceuticals and power industries
Reduction of total organic carbon (TOC) is critical for a number of industries who use ultrapure water, such as microelectronics, pharmaceuticals and power industries. UV applications in microelectronics includes UV disinfection, TOC reduction, chlorine & chloramines reduction and ozone reduction. As critical dimensions for integrated circuits continue to decrease, transistor capacities ...
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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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Analyzing TOC Using TC-IC on the Lotix High Temperature Combustion TOC Analyzer
Abstract Using safe and proven High Temperature Combustion (HTC), oxidation of carbonaceous material to carbon dioxide followed by Non-Dispersive Infrared (NDIR) detection of the CO2 product allows varieties of carbon to be independently determined using a predefined instrument method. These include: Total Carbon (TC) Inorganic Carbon (IC) Total Organic Carbon (TOC = TC-IC) Non-Purgeable ...
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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 ...
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The influence of reaction conditions in the oxidation of organic compounds of nuclear laundry water by ozone
This paper presents a summary of degrading organic compounds of nuclear laundry water by ozonation in different conditions of pH, hydrogen peroxide and ultraviolet radiation. The degradation of organic compounds was analysed by chemical oxygen demand (COD), total organic carbon (TOC) and biochemical oxygen demand (BOD). The optimal degradation conditions were at pH 7 with ozone, UV radiation and ...
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Improved Efficiencies in TOC Wastewater Analysis for Standard Method 5310B and USEPA Method 415.1
Abstract Total Organic Carbon (TOC) measurement is of vital importance to the operation of water treatment due to organic compounds comprising a large group of water pollutants. TOC has been around for many years, and although it is a relatively simple analysis in theory, operational efficiency is paramount. Laboratories are continually looking to increase sample throughput, decrease overall cost ...
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Introduction to the Fusion TOC Analyzer
Abstract Building on nearly 40 years of design and manufacturing experience, Teledyne Tekmar introduces its fifth generation Total Organic Carbon (TOC) UV/Persulfate analyzer, The Fusion. The Fusion offers increased flexibility, software intelligence and user-friendliness making this analyzer ideally suited for demanding laboratory needs. By implementing the patent-pending Static Pressure ...
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TOC System Suitability Test for Sterile Water
The United States Pharmacopeia (USP) specifies that total organic carbon (TOC) content be used for management of organic impurity values permitted in bulk purified water, water for injection, in addition to sterile purified water and sterile water for injection. According to USP, TOC analyzers to be used for sterile water must satisfy the TOC system suitability test using test water having a ...
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True technical evolution in Total Organic Carbon (TOC) online monitoring
TOC Evolution AquaGas introduces the TOC Evolution from SERES Environnement packed with true technical innovation empowering direct TOC online monitoring. TRUE TOC ANALYSIS The TOC Evolution allows accurate and complete measurement of Total Organic Carbon featuring simultaneous and direct measurement of various TOC groups including Volatile Organic Compounds (VOC), Non-Purgeable Organic ...
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