PCBs Articles

  • Bioremediation Efforts Mushroom in the Aftermath of California’s North Bay Fires

    Fifty miles north of the Golden Gate Bridge, California's Sonoma County is famous for its wine-country image — a patchwork of picturesque rolling hills and vineyards graced with moderate temperatures all year round. Beyond the grapes and quaint roadside tasting rooms, oak woodlands rich with black oak, Douglas fir, madrone, and California laurel provide habitat for abundant wildlife and ...


    By Earth Island Institute

  • Freeze drying of beads containing yeasts

    Next to fermentation processes or transformation of foods, microorganisms such as Saccharomyces cerevisiae or lactic acid bacteria are of economic importance in the field of probiotic dietary food and feed supplements. These applications however require the preservation of cell viability during storage. By combining granulation and freeze drying, dust free particles, homogeneous in size and ...


    By BÜCHI Labortechnik AG

  • Characteristics, distribution and sources of polychlorinated biphenyls (PCBs) in coastal sediments from the heavily industrialized area of Asalouyeh, Iran

    In this research, the levels of polychlorinated biphenyls (PCBs) were investigated in the marine sediments of Asaluyeh harbor, in the Persian Gulf. The samples were taken from industrial, semi-industrial and urban regions. The mean concentration levels of total (Σ) 18 detected PCBs were 514.32, 144.67 and 31.6 pg/g dw for the industrial, semi-industrial and urban sampling stations, ...


    By IWA Publishing

  • Determination of Organochlorine Pesticides and Polychlorinated Biphenyls Using GC/MS/MS Operated in the MRM Mode

    This paper describes use of a triple quadrupole GC/MS/MS method using Multiple Reaction Monitoring (MRM) mode for sensitive and selective detection and quantitation of Organochlorine pesticides and PCBs. A database with optimized MRM transitions for all of the OCPs and PCBs, including relative retention times for all components, makes method setup possible within minutes. The use of GC/MS/MS MRM ...

  • High Speed Designs with PSpice Advanced Analysis

    The basic rule of thumb in terms of high speed design guidelines includes taking into account the parasitics of the transmission path/ channel link. With PSpice Advanced Analysis the capacitive parasitic effect of single ended traces can be included in the transient simulation.To showcase the impact of parasitic capacitance lets zoom in on a subset of a larger and complex design, and modify the ...


    By PCB Piezotronics, Inc.

  • Good Preparation and Planning Reduces Wastewater Headaches Associated with Production Outages

    Author’s note: The terms mill and plant are used interchangeably in this article to describe an industrial manufacturing unit, such as a Pulp & Paper Mill, Petroleum Refinery, Chemical Processing Plant, Meat & Poultry Processing, etc. Plant (or mill) outages come in two types – scheduled and unplanned. Scheduled outages are generally annual affairs at roughly the same ...

  • Improved analyte recovery with keeper solvents

    Syncore Analyst: Evaporation to a defined volume with appendix, chiller and keeper solvent Polychlorinated biphenyls are suspected endocrine disruptors. They are enriched in the food chain which can result in elevated concentrations in fish and meat. The concentration of some PCBs is the subject of regulations and must be analyzed by reliable methods. Often, PCBs are extracted from a ...


    By BÜCHI Labortechnik AG

  • What’s Good About Allegro PCB Editor Backdrill Capability? New Capabilities in 17.2!

    The 17.2 Allegro PCB Editor has improved backdrill capabilities. Backdrill data is now stored in the library padstacks and utilized at the design level during the analysis and backdrill generation process. Padstacks which do not have pre-defined backdrill information ...


    By PCB Piezotronics, Inc.

  • How to Choose a Site for a Shipping Container

    In our Renters Guide, we discussed many things to consider when renting or leasing a storage/shipping container.  Once you’ve made the decision that you need a shipping container, you will need to figure out where to place it.   There are a number of factors to consider when choosing a site.  They include: Accessibility ...


    By Pac-Van, Inc.

  • Fat extraction of milk powder and infant formula samples

    SpeedEctractor E-916: Fat determination of milk powder and infant formula sample without hydrolysis In the dairy industry, the fat determination and extraction is not only a routine procedure in quality assurance and labelling also it is very important for contaminant determination, as e.g. ...


    By BÜCHI Labortechnik AG

  • Helping Laurel Asphalt to Fight Foul Odors and Be Good Neighbors

    One of the unavoidable byproducts of the asphalt production process is a mixture of volatile hydrocarbons, mercaptans, hydrogen sulfide, and heat, which may cause a unique mixture of foul odors. When this happens, many asphalt producers have to contend with neighboring residents – often homes and businesses – that bring their odor complaints to both the media and local town-hall ...


    By OMI Industries (OMI)

  • Design for recycling: a route to green ship recycling

    Ship recycling at the end of a ship’s useful life aims to make the shipping industry more environmentally sustainable and is a major source of employment in developing countries. However, there are associated health, safety and environmental concerns. This study argues these concerns are due to inappropriate design and explains how ‘design for recycling’ can reduce the costs and ...

  • Help wanted: good recyclers!

    Your help is wanted (and needed)! Recycling creates new businesses that haul, process, and broker recovered materials, as well as companies that manufacture and distribute products made with these recycled materials. You can help create these jobs by making sure you’re recycling consistently and correctly. Here are some best recycling practices to be a good recycler: 1. Capture all ...


    By Eco Partners, Inc.

  • Repacking goods must be made in a quick and efficient way - Case Study

    At Prime Cargo in Kolding time is an influencing factor, due to tight deadlines from customers around the world, who need goods to be transported, stored and forwarded on time. Prime Cargo is an international forwarding company with headquarters in Kolding, Denmark. With offices and agents all over the world this company is total supplier of transport solutions at sea, on the road and in the air ...


    By Bramidan Balers

  • Assessing atmospheric concentration of polychlorinated biphenyls (PCBs) by evergreen Rhododendron maximum next to a contaminated stream

    Conifers are often used as an “air passive sampler”, but few studies have focused on the implication of broadleaf evergreens to monitor atmospheric semivolatile organic compounds such as polychlorinated biphenyls (PCBs). In this study, we used Rhododendron maximum (rhododendron) growing next to a contaminated stream to assess atmospheric PCB concentrations. The study area was located in a ...


    By John Wiley & Sons, Ltd.

  • Chesapeake Bay fish‐osprey (Pandion haliaetus) food chain: Evaluation of contaminant exposure and genetic damage

    From 2011−2013, a large‐scale ecotoxicological study was conducted in several Chesapeake Bay tributaries (Susquehanna River and flats, the Back, Baltimore Harbor/Patapsco River, Anacostia/ middle Potomac, Elizabeth and James Rivers), and Poplar Island as a mid‐Bay reference site. Osprey (Pandion haliaetus) diet and the transfer of contaminants from fish to osprey eggs were evaluated. The most ...


    By John Wiley & Sons, Ltd.

  • Being a Good Neighbor With Eco-Friendly Odor Management

    As a result of urban revitalization projects, as well as suburban sprawl and development, industrial and agricultural operations are now becoming surrounded by new residential and commercial neighbors. For industrial facilities that call these neighborhoods home, one of the biggest challenges is completely mitigating any odor that may occur. When it comes to fighting odors, being a good neighbor ...


    By OMI Industries (OMI)

  • Trade sustainability impact assessment on the environmental goods agreement - Case Study

    EXECUTIVE SUMMARY On 24 January 2014 at the World Economic Forum in Davos, the EU, together with 13 other WTO members pledged to launch negotiations to liberalise global trade in environmental goods (EGs). The negotiations are employing the Asia-Pacific Economic Cooperation (APEC) list of environmental goods as a starting point with the intent of expanding it to liberalise a "broad ...


    By OZONATOR Industries Limited

  • Dioxin and PCB determination in foodstuffs

    SpeedExtractor E-914: Pressurized solvent extraction for the determination of dioxins and PCBs in dairy, egg, pork and fish The determination of dioxins and PCBs in foodstuffs is performed to monitor the potential exposure to humans. A reliable and fast  method is introduced. Proficiency test samples were extracted with the SpeedExtractor E-914, followed by an automated clean-up ...


    By BÜCHI Labortechnik AG

  • Hepatic EROD induction in the common kingfisher from an e‐waste recycling site

    The health effects of exposure to electronic waste (e‐waste) derived pollutants are an important issue. We explored the association between the hepatic levels of e‐waste derived halogenated contaminants, including polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and polybrominated biphenyls (PBBs), and hepatic ethoxyresorufin‐O‐deethylase (EROD) activity of the common ...


    By John Wiley & Sons, Ltd.

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