chemical exposure Articles

  • Examining the benefits of HDPE geomembrane

    Comparing various geomembranes for your next geosynthetic application? Don’t overlook high-density polyethylene (HDPE) geomembrane. HDPE has been in use for decades and during that time a number of studies have been conducted to test its longevity and ability to meet environmental sustainability project requirements. Here, we explore some of those studies to examine the benefits of HDPE ...


    By Agru America, Inc.

  • Chemical Exposure from Imported Food Products

    Chemical Exposure from Imported Food Products Requirement for Routine Monitoring Due to the large quantities of food being imported by countries in today's global markets, routine monitoring of these imported products for chemical contaminants is essential to ensure compliance with chemical safety regulations. Chemicals that have long been removed from the supply chain for products and ...


    By Creme Global

  • Management of chemical exposure: the limitations of a risk-based approach

    Risk assessment and risk-based management approaches are becoming incorporated into a wide range of disciplines as frameworks for use in critical decision-making pathways. During its rapid expansion, many of the assumptions, subjective judgements and irreducible uncertainties inherent within the risk paradigm are becoming increasingly overlooked. This paper provides a critical review of the ...


    By Inderscience Publishers

  • LED Applications for Oil and Gas Refining and Processing

    Oil and gas processing facilities are unsafe due to the existence of hazardous compounds during operations. When addressing such issues, companies in the sector may deploy explosion proof lighting systems to prevent the ignition of sparks created from the electrical equipment. The adoption of LED technology in oil and gas refineries has helped reinforce key safety measures associated with ...


    By Larson Electronics LLC

  • Choosing the Right H2S Analyzer for Your Specific Application

    Not all H2S analyzers are created equal, and certain H2S analyzers work better on different applications than they do others. Significant amounts of time, money and headaches can be saved by learning about the different H2S analyzer principles of operation and choosing the correct analyzer for your ...


    By Analytical Systems Keco

  • Occupational Skin Exposure

    The National Institute for Occupational Safety and Health (NIOSH) reports that occupational skin disease is the second most common type of occupational disease, indicating that employee education regarding skin protection is needed. In an occupational setting, employees have the potential to absorb both liquids and gases through their skin.  Skin exposure can occur through direct contact ...


    By MSDS Binders Inc.

  • What is the REACH of your exposure?

    Margarethe Jaroszewski of 3E Company looks at the extra burden REACH Exposure Scenarios will bring The REACH Regulation went into effect on 1 June 2007, simplifying but also complicating the compliance work for companies manufacturing or importing chemicals in Europe. As a result, all companies manufacturing, importing, distributing or using chemical substances on their own, in mixtures ...


    By 3E Company

  • Highly time‐variable exposure to chemicals—toward an assessment strategy

    Organisms in the environment experience fluctuating, pulsed, or intermittent exposure to pollutants. Accounting for effects of such exposures is an important challenge for environmental risk assessment, particularly given the simplified design of standard ecotoxicity tests. Dynamic simulation using toxicokinetic‐toxicodynamic (TK‐TD) models describes the processes that link exposure with ...


    By John Wiley & Sons, Ltd.

  • Relationships between exposure and dose in aquatic toxicity tests for organic chemicals

    There is continuing debate about the merits of exposure‐based toxicity metrics such as median lethal concentration (LC50) versus organism‐based metrics such as Critical Body Residue (CBR) as indicators of chemical toxicity to aquatic organisms. To demonstrate relationships and differences between these two metrics we apply a simple one‐compartment toxicokinetic mass‐balance model for ...


    By John Wiley & Sons, Ltd.

  • Tof-HRMS: Rescuing low-exposure bioanalysis applications from chemical noise

    The drug development process requires pharmacokinetic (PK) analysis to be performed as part of safety and efficacy studies in both preclinical species and human subjects. For high-sensitivity bioanalysis, liquid chromatography (LC) coupled to a triple quadrupole mass spectrometer (LC-MS/MS) is considered the gold standard for quantification. However, for some low-exposure applications, ...


    By Waters Corporation

  • Periodic reporting of hazard data, exposure information on existing chemicals

    Arecent co-authored paper1 discussed a number of fundamental changes in U.S. regulation of commercial chemicals that should be considered in revising the Toxic Substances Control Act.2 As discussed in that paper, while the Environmental Protection Agency under TSCA has broad authority to require testing and reporting of hazard and exposure information on existing chemicals via rulemaking, ...


    By Bergeson & Campbell, P.C.

  • iSTREEM®: An approach for broad‐scale in‐stream exposure assessment of “down‐the‐drain” chemicals

    The iSTREEM® model (“in‐stream exposure model”), a web‐based model made freely available to the public by the American Cleaning Institute, provides a means to estimate concentrations of “down‐the‐drain” chemicals in effluent, receiving waters, and drinking water intakes across national and regional scales under mean annual and low flow conditions. We provide an overview of the evolution and ...


    By John Wiley & Sons, Ltd.

  • Predicting the sensitivity of populations from individual exposure to chemicals: The role of ecological interactions

    Population responses to chemical stress exposure are influenced by nonchemical, environmental processes such as species interactions. A realistic quantification of chemical toxicity to populations calls for the use of methodologies that integrate these multiple stress effects. The authors used an individual‐based model for Daphnia magna as a virtual laboratory to determine the influence of ...


    By John Wiley & Sons, Ltd.

  • Reduce OH&S Risk Exposure

    Over the last few years there have been significant studies released that point at chemicals as a major source of many ailments, and for the proliferation of ailments that have become much more common as chemical use has become more widespread. Whilst chemicals have a place in all our lives, many now argue that human and animal exposure to harmful chemicals should be minimised.  If you buy a ...


    By GenEon Australia

  • Health implications of mercury exposure in children

    Mercury is a ubiquitous environmental toxin that can produce a wide range of health effects in humans. It is found in three chemical forms: organic, inorganic and elemental (mercury). The sources of exposure are also markedly different for the different forms of mercury. Diet, especially fish and other seafood, is the main source of exposure of the general public to organic mercury. Dental ...


    By Inderscience Publishers

  • 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.

  • Application of pocis for exposure assessment of munitions constituents during constant and fluctuating exposure

    Potential use of polar organic chemical integrative samplers (POCIS) for exposure assessment of munitions constituents (MC), including 2,4,6‐trinitrotoluene (TNT) and hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine (RDX), and their breakdown products (aminodinitrotoluenes [ADNTs], diaminonitrotoluenes [DANTs], and hexahydro‐1,3,5‐trinitroso‐1,3,5‐triazine [TNX]), was examined. Loss of MC from the ...


    By John Wiley & Sons, Ltd.

  • What is Probabilistic Food Safety Exposure

    What is Probabilistic Food Safety Exposure Assessment? There are a myriad of chemicals in food products consumed by populations. Each chemical in its own right may not be harmful to the population, but in combination with other chemicals, there may be risk of high levels of exposure to potentially harmful substances. An effective probabilistic exposure assessment needs to handle the ...


    By Creme Global

  • Embalmers risk dangerous exposure to Formaldehyde

    Embalmers can be at risk of dangerous exposure to Formaldehyde. ...


    By PPM Technology

  • Experimental paradigm for in‐laboratory proxy aquatic studies under conditions of static, non–flow‐through chemical exposures

    Endocrine‐disrupting chemicals (EDCs) such as 17α‐ethynylestradiol, 17β‐estradiol, estrone, and para‐nonylphenol have been measured in wastewater‐treatment plant effluents, surface waters, sediments, and sludge and have been shown to induce liver‐specific vitellogenin (vtg) messenger RNA in male fathead minnows (Pimephales promelas). The purpose of the present study was to establish minimal ...


    By John Wiley & Sons, Ltd.

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