chemical analysis Articles

  • Chemical Engineering Magazine: Odor Issues and Solutions for Wastewater Treatment

    Today, there has been a dramatic increase in the number of industrial operations that are located within or near small towns and even large cities. When local residents constantly smell these industrial processes – particularly from wastewater treatment — unhappy neighborhoods are generally the result. In addition, many wastewater facilities can no longer produce odors without facing ...


    By OMI Industries (OMI)

  • Science and precaution in the risk analysis of chemicals

    This work shows the risk assessment procedures for chemicals and the factors that can determine the area of scientific uncertainty in the evaluation process, making the application of the precautionary principle necessary. The nature of the actions to be adopted on the basis of the precautionary approach, that is expressly included in the European Union Treaty, can be quite different. These ...


    By Inderscience Publishers

  • The Chemical Safety Improvement Act: An In-Depth Review and Analysis

    In a stunning bipartisan show of support for reform of the Toxic Substances Control Act (TSCA) that few saw coming, Senators David Vitter (R-LA) and Frank Lautenberg (D-NJ) (among bipartisan others) introduced on May 22, 2013, the Chemical Safety Improvement Act (CSIA), later designated S. 1009, available online. ...


    By Bergeson & Campbell, P.C.

  • Worldwide Leather Chemicals Market Forecasts and Analysis 2018

    Leather chemicals are a class of products used in the treatment of animal hides for the production of leather. There are a range of leather chemicals available in the market, which are deployed for every step in leather production - from beamhouse to finishing. The major categories of leather products include shoes, garments, furniture and automotive upholstery, and other automotive ...


  • An overview of exergy analysis for chemical process industries

    Among all the industrial sectors, the chemical industry is one of the energy intensive industry with 33% share in industrial energy use. Increasing cost of raw materials, infrastructure cost and energy cost increases burden on the profit margin of the chemical sector. Chemical industries are looking for improved process design and efficient equipments where energy consumption can be reduced. In ...


    By Inderscience Publishers

  • PHASUITE: AN AUTOMATED HAZOP ANALYSIS TOOL FOR CHEMICAL PROCESSES

    INTRODUCTION Safety is an important issue in process design and operation in chemical industry. It is even more critical for modern chemical manufacturing processes, which are either operated under extreme conditions to achieve maximum economic profit, or are highly flexible, such as the specialty chemical or pharmaceutical processes. The importance of safety analysis in process operation is ...

  • Application notes: TOC analysis in a chemical laboratory

    What You Need to Know Analytical laboratories in the chemical industry are routinely tasked with monitoring organics in water across a wide range of applications. For example, organic carbon analysis is being used to: Monitor plant storm water and wastewater Test for condensate system or boiler integrity Enhance cooling and make-up water quality ...


    By GE Analytical Instruments

  • 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

  • Playing Dirty: Analysis of hazardous chemicals and materials in games consoles

    The use of hazardous chemicals and materials in electronic products is widespread. Despite some recent improvements – a result of a combination of legal restrictions in some parts of the world, and voluntary action by companies – many devices still contain a variety of hazardous substances. These include chemicals which fall outside current legislative controls, as highlighted in recent studies ...


    By Greenpeace International

  • Sensitivity analysis for the SimpleTreat model to simulate fate of chemicals in sewage treatment plants

    SimpleTreat 3.1 predicts the distribution and elimination of chemicals by sewage treatment. The model is used as the default calculation in EUSES 2.0 to estimate exposure concentration in the receiving water, soil and air. A sensitivity analysis was performed to rank input parameters according to their influence on model predictions. Triclosan was selected for the base case. The sewage flow, ...


    By IWA Publishing

  • PeCOD® Analyzer 15-minute chemical oxygen demand (C0D) analysis

    The revolutionary PeCOD® Analyzer technology provides Chemical Oxygen Demand results in under 15 minutes in a Simple-Safe-Effective manner. With our mercury and dichromate free chemistry installed in over 20 countries, the PeCOD® Analyzer has delivered successful test monitoring of COD in a variety of environments with our approved and published MOECC method  Through our proprietary ...


    By MANTECH

  • Analysis of physico-chemical and bacteriological quality of drinking water in Mafikeng, South Africa

    Mafikeng, the capital of the North West Province, receives water from two sources, namely the Molopo eye and the Modimola dam. Once treated, the potable water is mixed and supplied to the city via distribution systems. This study was designed to assess the quality of drinking water in Mafikeng and also to determine whether the water from the two sources has an impact on the mixed water ...


    By IWA Publishing

  • Analysis of the chemical form of iron in water pipes using XAFS measurements

    Yellow and red metal oxides are commonly found on deteriorated water pipes and it has been reported that their main component is iron. X-ray absorption fine structure (XAFS) spectroscopy is an effective method which can be used to measure the chemical form of metals. However, when the iron concentration in water samples is extremely low, XAFS measurement and analysis can be difficult due to so ...


    By IWA Publishing

  • Chemical analysis of drinking water of villages of Sanganer Tehsil, Jaipur District

    Abstract Due to pressure of human activity, urbanization and industrialization, the groundwater sources are degraded gradually; therefore pure, safe, healthy and odorless drinking water is a matter of deep concern. There are many pollutants in groundwater due to seepage viz. organic and inorganic pollutants, heavy metals, pesticides, fluorides etc. In Rajasthan state, all 32 districts are ...

  • Analysis and occurrence of typical endocrine-disrupting chemicals in three sewage treatment plants

    Seven typical endocrine-disrupting chemicals (EDCs), including bisphenol A (BPA), 4-tert-octylphenol (OP), estrone (E1), estradiol (E2), 17α-estradiol (17α-E2), estriol (E3) and 17α-ethinylestradiol (EE2) in wastewater, were simultaneously determined with gas chromatography–mass spectrometry (GC–MS). Samples, including influents, effluents and wastewater of different unit processes, were taken ...


    By IWA Publishing

  • Chemical analysis of drinking water from some communities in the Brong Ahafo region

    This study consisted of the determination of the trace metals and some physiochemical properties in drinking water samples from the Brong Ahafo region of the Republic of Ghana, where drinking water samples are not treated before it is consumed. The purpose was to ascertain the quality of water from these sources. Samples were taken from fifteen sampling points and analyzed for the following ...

  • Why is Chemical Oxygen Demand (COD) a useful parameter for drinking water analysis?

    Ask the Expert: COD Analysis for Drinking Water Question: Why is Chemical Oxygen Demand (COD) a useful parameter for drinking water analysis? Answer: At very basic level Chemical Oxygen ...


    By Camlab Limited

  • Chemical analysis of fish bile extracts for monitoring endocrine disrupting chemical exposure in water: Bisphenol A, alkylphenols and norethindrone

    This study determined concentrations of estrogenic bisphenol A (BPA), nonylphenol (NP), octylphenol (4‐tert‐OP), butylphenol (4‐tert‐BP) and progestogenic norethindrone (NET) by LC‐MS/MS in bile extracts from field fish in Xin'an River and market fish in Shanghai, China. Compared to the field fish, EDC concentrations in market fish bile were at relatively high levels with high detectable ...


    By John Wiley & Sons, Ltd.

  • Mercury Analysis

    Characteristics of Mercury What is Mercury? Mercury is a naturally occurring silver-colored metallic element noted for its occurrence as a liquid at room temperature and toxic to living organisms. This silvery, opaque liquid metal is very dense, yet has a high surface tension that causes it to form tiny perfect spheres in the pores of the rocks it is found in. It is ...


    By HORIBA Europe GmbH

  • Petroleum/Chemicals Application Guide

    This guide contains information about Supelco products and technology for performing detailed hydrocarbon analysis by chromatographic methods. Various applications are discussed; including, simulated distillation, polynuclear aromatic hydrocarbons, phenols / polymers, petrochemical analysis, high resolution and high speed analyses, and packed column applications. Columns used range from the ...


    By MilliporeSigma

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