water chemistry analysis Articles

  • Geochemical control processes and potential sediment toxicity in a mine‐impacted lake

    Geochemical parameters and major ion concentrations from sediments of a freshwater lake in the town of Åtvidaberg, south‐eastern, Sweden, were used to identify the geochemical processes that control the water chemistry. The lake sediments are anoxic, characterized by reduced sulphur and sulphidic minerals. The hypothesis tested is that in sulphidic‐anaerobic contaminated sediments, the ...


    By John Wiley & Sons, Ltd.

  • Arsenic wood field testing kit

    Now available from Industrial Test Systems, Inc. is a quick, easy, field test kit that can confirm the presence of inorganic arsenic in wood. Arsenic Quick™ 481396-W kit is a modification of the US Patented, ETV Verified arsenic test for drinking water. This 10 minute test readily confirms the absence or presence of arsenic in any wood sample, including CCA treated lumber using safe ...

  • Aqua Pennsylvania SORB 33® System

    Site Background Aqua Pennsylvania, headquartered in Bryn Mawr, PA and a division of Aqua America, operates a 190 gallons per minute (gpm) well and pumphouse in a new residential development near the town of Collegeville, PA. Aqua PA has plans to add a second 250 gpm well for the same system in the future bringing the pumping capacity to 450 gpm. Well water is pumped into the pumphouse pictured ...

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...


    By Geotech

  • Industrial Dryer Drives Fast Economic Development of Central China

    In recent years, China has been greatly influenced by the global economic crisis, and the engineering mechanical industry encounters winter season which caused some companies to stop production or even close down; and the dryer machine manufacturing industry also suffers a lot. Drying generally refers to process in which the heat air makes water in the materials evaporate and brings it away, and ...

  • A practitioner’s perspective on the uses and future developments for wastewater treatment modelling

    The modern age of wastewater treatment modelling began with publication of the International Water Association (IWA) Activated Sludge Model (ASM) No.1 and has advanced significantly since. Models are schematic representations of systems that are useful for analysis to support decision-making. The most appropriate model for a particular application often incorporates only those components ...


    By IWA Publishing

  • Applying biotic ligand models and Bayesian techniques: Ecological risk assessment of copper and nickel in Tokyo rivers

    Biotic ligand models (BLMs) have been broadly accepted and used in ecological risk assessment of heavy metals for toxicity normalization with respect to water chemistry. However, the importance of assessing bioavailability by using BLMs has not been widely recognized among Japanese stakeholders. Failing to consider bioavailability may result in less effective risk management than would be ...


    By John Wiley & Sons, Ltd.

  • Pathway‐based approaches for assessment of real‐time exposure to an estrogenic wastewater treatment plant effluent on fathead minnow reproduction

    Wastewater treatment plant (WWTP) effluents are known contributors of chemical mixtures into the environment. Of particular concern are endocrine‐disrupting compounds, such as estrogens, that can affect hypothalamic‐pituitary‐gonadal axis function in exposed organisms. The present study examined reproductive effects in fathead minnows exposed for 21 d to a historically estrogenic WWTP ...


    By John Wiley & Sons, Ltd.

  • Non toxic reagents for SEIBOLD online-analyser for heavy metals

    Reagents and chemistry used with SEIBOLD COMPOSER Analysers are free from toxic compounds. Our "Green Thumb" project started in 2006 and delivered its first products in 2008. In 2011 the complete range of SEIBOLD COMPOSER Analyser for Heavy Metals has been introduced to the market. SEIBOLD's Analyser series COMPOSER is based on spectrophotometric technology. Measured concentration is a function ...

  • Meeting the Need for LIMS at a smaller laboratory case study

    EMS Inc (Environmental Management Services) offers environmental sample collection, VELAP (Virginia Environmental Laboratory Accreditation Program) accredited laboratory analysis, water and wastewater plant operations, and consulting services to both industrial and commercial clients. By introducing Autoscribe's entry level Matrix Express LIMS (Laboratory Information Management System), EMS Inc ...


    By Autoscribe Informatics

  • Reverse Osmosis for WFI and PW

    The United States Pharmacopeial Convention Inc. (USP) has proposed new specifications for Water for Injection (WFI) and Purified Water (PW). These specifications will include quantitative conductivity, and total organic carbon (TOC) measurements will replace 100-year-old qualitative wet chemistry tests. The impetus behind these changes is to create a means of analysis that is less ...

  • ESdat environmental database software helps organizations manage their environmental data for ISO 14001

    Environmental data management software is an efficient way to handle large amounts of data generated with the adoption of environmental standards like ISO 14001.  A recent survey by EScIS shows that 100% of environmental professionals saved time using their ESdat environmental database software and that having the data organized was seen as a major feature. ESdat environmental database ...

  • SMF4 case study 1

    Recycled water plant monitoring Date: 2011 Location: New South Wales Australia Purpose: To determine if the SMF4 could be used to monitor the output from a grey water recycling plant and conclusively differentiate the output water between potable and recycled. Background STS has had a long history of closely working with ...

  • Dispersant and salinity effects on weathering and acute toxicity of South Louisiana crude oil

    Chemical dispersants are an important technology in the remediation of oil spills in the aquatic environment, facilitating degradation of crude oil and salinity is an important factor in dispersant effectiveness. The aim of the current study was to explore the role of salinity on the degradation chemistry of crude oil polycyclic aromatic hydrocarbons (PAH) and acute toxicity of the water ...


    By John Wiley & Sons, Ltd.

  • Effect of grain-coating mineralogy on nitrate and sulfate storage in the unsaturated zone

    Unsaturated-zone sediments and the chemistry of shallow groundwater underlying a small (8-km2) watershed were studied to identify the mechanisms responsible for anion storage within the Miocene Bridgeton Formation and weathered Coastal Plain deposits in southern New Jersey. Lower unsaturated-zone sediments and shallow groundwater samples were collected and concentrations of selected ions ...

  • Chemical cleaning is cost-effective, efficient

    Chemical cleaning is an important offering within Clean Harbors’ portfolio of industrial cleaning/maintenance services for refineries, petrochemical processors and other process manufacturers. Along with high-pressure cleaning, pigging, Tech Sonic sound wave cleaning and other technologies, chemical leaning is a safe, efficient and cost-effective way to remove corrosion, deposits, residual ...


    By Clean Harbors

  • Case Study: Farm pond sludge and algae remediation

    Problem A 1 ½ acre farm pond located in southeastern Wisconsin was experiencing a severe algae bloom due to high levels of fertilizer runoff from the surrounding farm fields located on the north and east sides of the pond. Farm field runoff drains into the north end of the pond via a 4-inch drainpipe. The pond is further fertilized by the year round population of 6-8 resident ducks and by ...


    By Avir Environmental LLC

  • Guide To Coolant In Oil Test Methods

    Liquid cooled engines and rotating equipment use glycol based coolants because of their excellent heat transfer abilities. However, glycol based coolants are not desirable at all in lubrication oil itself – Coolant ingression to the lubricant is a particularly nasty contaminant for the variety of damage it can cause. Glycol coolants break down in the high temperature engine environment, ...


    By Spectro Scientific

  • Evaluating Cleanup at Hamilton Army Airfield Using EQuIS and ArcGIS

    The Sacramento District, US Army Corps of Engineers, is implementing EarthSoft's EQuIS and ArcGIS for better management, analysis, and response to landfill remedial activities being conducted at the former Hamilton Army Airfield. This former Air Force Base located four miles south of the city of Novato, on San Pablo Bay, in Marin County, California, is undergoing environmental clean-up as it is ...


    By EarthSoft, Inc

  • Is pH a red herring when it comes to ocean acidification?

    New research points to saturation state, not pH, as the most pressing metric to track when it comes to shellfish survival. In 2007, the owners of Whiskey Creek oyster hatchery on the Oregon coast lost almost all of their larvae — and had no idea why. The only clue was that the larval die-offs often occurred during intense upwelling events, when ...


    By Ensia

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