Water Toxicity Monitoring Articles

  • Lifesaving weather warnings thanks to professional visibility sensors

    The new Lufft visibility sensor VS20k is now officially available. But what distinguishes it from the previous model and for which applications is it suitable? In the following article, you learn more about the new Lufft visibility sensor family… Reduced visibility – a risk for all traffic users Traffic accidents, flight cancellations and delays: Reduced visibility is ...

  • Aquaread’s Award Success at The Flood Expo 2016

    Aquaread recently attended The Flood Expo 2016, the largest event of its kind in the world showcasing the best solutions and innovations in the world of flooding. The event, hosted at London’s ExCel, showcased a new feature for 2016 in the form of The Flood Expo Awards, designed to recognise and celebrate companies and products pushing forward in the areas of flood innovation, mitigation ...


    By Aquaread Limited

  • Chlor-Alkali Process Pipe - Case Study

    Project: CHLOR-ALKALI PROCESS PIPE Client: Major chlor-alkali plant in the Middle East General Scope: Fibrex manufactured over 12,000 ft. of chlorine process piping in diameters ranging from 1” to 32” diameter. Engineering/Procurement: FLUOR DANIEL, INC. – Sugar Land, Texas Resin & ...


    By Fibrex Corporation

  • Drought policy in Mexico: a long, slow march toward an integrated and preventive management model

    Mexico is exposed to droughts and vulnerable to their impacts. Despite a history of serious economic and social consequences from drought, until recently national water policy did not acknowledge this type of natural disaster as a priority issue. This paper analyses how drought policy in Mexico has evolved since the creation of the National Water Commission in 1989 up to 2013, when the most ...


    By IWA Publishing

  • Flooding: Would more time to react help you?

    If you have been affected by flooding you will know that the effects are devastating. Flood waters can destroy homes, communities and wash away your treasured possessions. They are wreaking havoc on many lives across the UK ...


    By Aquaread Limited

  • The SESAMO early warning system for rainfall-triggered landslides

    The development of Web-based information systems coupled with advanced monitoring systems could prove to be extremely useful in landslide risk management and mitigation. A new frontier in the field of rainfall-triggered landslides (RTLs) lies in the real-time modelling of the relationship between rainfall and slope stability; this requires an intensive monitoring of some key parameters that ...


    By IWA Publishing

  • Two‐generational effects of contaminants in D. magna. Effects of offspring quality

    The authors aim to set up a protocol to perform a two‐generational ring test using the existing guidelines for the Daphnia magna reproduction test. It is well known in ecology that size and quality of offspring varies across the first clutches in D. magna and that certain chemicals affect offspring quality. Therefore, the origin of the second generation is an important factor to consider. ...


    By John Wiley & Sons, Ltd.

  • EPA Direct Final Rule Includes SNURs for Several Biobased Chemicals

    On May 8, 2015, the U.S. Environmental Protection Agency (EPA) promulgated through a direct final rule significant new use rules (SNUR) for 25 chemical substances that were the subject of premanufacture notices (PMN).  The SNURs require persons who intend to manufacture (including import) or process any of these 25 chemical substances for an activity that is designated in the SNUR as a ...

  • EPA Direct Final Rule Includes SNURs for Several Biobased Chemicals

    On May 8, 2015, the U.S. Environmental Protection Agency (EPA) promulgated through a direct final rule significant new use rules (SNUR) for 25 chemical substances that were the subject of premanufacture notices (PMN).  The SNURs require persons who intend to manufacture (including import) or process any of these 25 chemical substances for an activity that is designated in the SNUR as a ...


    By Bergeson & Campbell, P.C.

  • We want good evacuation measures, no large seawalls!

    What is the best approach to restore and protect a coastline that was hit by a Tsunami? Driven by my own involvement in mangrove restoration after the 2004 Indian Ocean ...


    By Wetlands International

  • A fluorescence based hydrolytic enzyme activity assay for quantifying toxic effects of Roundup® to Daphnia magna

    Daphnia magna is a widely used model organism for aquatic toxicity testing. In the present study, we investigated the hydrolytic enzyme activity of D. magna after exposure to toxicant stress. In vivo enzyme activity was quantified using 15 fluorogenic enzyme probes based on 4‐methylumbelliferyl or 7‐amino‐4‐methylcoumarin. Probing D. magna enzyme activity was evaluated using short‐term ...


    By John Wiley & Sons, Ltd.

  • Exploration of daphnia behavioral effect profiles induced by a broad range of toxicants with different modes of action

    Behavior is increasingly reported as a sensitive and early indicator of toxicant stress in aquatic organisms. However, the systematic understanding of behavioral effects and comparisons between effect profiles is hampered because the available studies are limited to few chemicals and differ in the exposure conditions and effect parameters examined. The aims of this study were (i) to explore ...


    By John Wiley & Sons, Ltd.

  • Centinela: an early warning system for the water quality of the Cauca River

    The Cauca River is the drinking water source for 1.3 million inhabitants of the city of Cali, Colombia. Although the river discharge is sufficient to handle the water demand of the city all year long, significant water pollution events cause frequent disruption to the Puerto Mallarino Treatment Plant (PMTP) and the water supply service, with substantial social and economic impacts on the city. ...


    By IWA Publishing

  • Metal mixtures modeling evaluation: 1. Background

    Despite more than five decades of aquatic toxicity tests conducted with metal mixtures, there is still a need to understand how metals interact in mixtures and to predict their toxicity more accurately than currently is done. This paper provides a background for understanding the terminology, regulatory framework, qualitative and quantitative concepts, experimental approaches, and ...


    By John Wiley & Sons, Ltd.

  • Signal analysis and anomaly detection for flood early warning systems

    We describe the detection methods and the results of anomalous conditions in dikes (earthen dams/levees) based on a simultaneous processing of several data streams originating from sensors installed in these dikes. Applied methods are especially valuable in cases where lack of information or computational resources prohibit computing the state of the dike with finite element and other ...


    By IWA Publishing

  • Northamptonshire County Council - Storm Case Study

    The Issue It is a common perception amongst homeowners living away from rivers or coastal areas or when there are periods of drought and water shortages that the risk of flooding is not possible. However, the hottest and driest weather conditions are often preceded by thunderstorms or flash flooding. In urban areas, heavy rainfall over dry land with poor absorption increases run-off, ...


    By Casella

  • China in Talks to Join the OECD System for the Mutual Acceptance of Data in Assessment of Chemicals

    It has recently been reported that China is in discussions with the Organization for Economic Cooperation and Development (OECD) to become a provisional adherent to the Mutual Acceptance of Data (MAD) system. This would require China to accept data from safety testing of chemicals from participating countries generated under the MAD conditions and to establish a Good Laboratory Practice (GLP) ...


    By Bergeson & Campbell, P.C.

  • 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.

  • How Cuba turns early warning into joined-up action

    Cuba's early warning approach holds lessons for other countries, write disaster risk reduction specialists Veronica F. Grasso and José Rubiera. Advances in the early warning of natural hazards could bring great benefits to countries and communities. But early warning needs early action: if political will and coordination are lacking, the advantages could be lost. What a ...


    By SciDev.Net

  • Why disaster warning and development go hand in hand

    To engage people in early action we must understand their experience, behaviour and constraints, says disaster policy expert Andrew Collins. Disaster predictions have significant uncertainty that tends to undermine efforts to act on early warnings. In Bangladesh, for example, where there ...


    By SciDev.Net

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