environmental samples Articles

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A Cleaner Energy Future

by ASTM International  (Oct. 16, 2014)

As renewable energy plays an increasingly important role in the world’s energy portfolio, the standards of ASTM International Committee E44 are helping to pave the way for innovation in clean energy sources. A growing population and improving living standards around the world are causing significant increases in energy demand and competition ...

Direct detection of Mycobacterium avium in environmental water and scale samples by loop-mediated isothermal amplification

by IWA Publishing  (Jun. 18, 2014)

We previously demonstrated the colonization of Mycobacterium avium complex in bathrooms by the conventional culture method. In the present study, we aimed to directly detect M. avium organisms in the environment using loop-mediated isothermal amplification (LAMP), and to demonstrate the efficacy of LAMP by comparing the results with those ...

Biodiversity Detectives Solve Mysteries with Environmental DNA

by Ensia  (Aug. 4, 2014)

For years, Monterey Bay Aquarium’s 1.2 million gallon main tank has been a source of thrill for visitors seeking fish-eye views of life in the pounding Pacific Ocean right outside its doors. Now, thanks to advances in DNA sequencing, it’s also becoming a model for how to survey life inthat vast ocean with just a few glasses of water. ...

Automated method for determination of dissolved organic carbon – water distribution constants of structurally diverse pollutants using pre‐equilibrium solid phase microextraction

by John Wiley & Sons, Ltd.  (Nov. 13, 2014)

Dissolved organic carbon (DOC) plays a key role in determining the environmental fate of semi‐volatile organic environmental contaminants. The goal of the present work was to develop a method using commercially available hardware to rapidly characterize the sorption properties of DOC in water samples. The resulting method uses ...

Silver nanoparticle toxicity to Atlantic killifish (Fundulus heteroclitus) and Caenorhabditis elegans: A comparison of mesocosm, microcosm and conventional laboratory studies

by John Wiley & Sons, Ltd.  (Nov. 13, 2014)

The use of silver nanoparticles in consumer products and industrial applications, as well as recent detection in waste streams, has created concern over potential impacts on aquatic ecosystems. The effect of complex environmental media on silver nanoparticle toxicity was investigated using wetland mesocosms and smaller scale microcosms. ...

Ensuring safe drinking water case study

by Antea Group - USA  (Nov. 6, 2014)

Challenge: A state environmental agency contracted with Antea Group to assist in the execution of a state-wide clean drinking water program. Program objectives included the development of an efficient and standardized program to monitor for chemical and biological contaminants across more than 6,500 public water systems. ...

Continuous measurement of Process oxygen for Claus sulfur recovery unit (sru) start-ups and shut-downs case study

by Ametek Process Instruments - THERMOX  (Nov. 24, 2014)

During start-up and shut-down, any time a sulfur recovery unit (SRU) transitions from ambient temperature through fuel gas warm up to the introduction of acid gas, measurement of 02 stoichiometry is critical. Historically, operators have manually taken samples using a portable electrochemical type Os analyzer. While giving more or less ...

Eijkelkamp equipment reveals 100.000 year old records of environmental change - Case Study

by Eijkelkamp Agrisearch Equipment  (Jul. 23, 2014)

Michael Bird of the James Cook University (Centre for Tropical Environmental & Sustainability Sciences) in Cairns and his team are looking for 100.000 year old records of environmental change in the north of Australia. Michael Bird uses Eijkelkamp equipment to take sediment samples. Check the ...

Measurement of Trace metals in Ambient air case study

by Cooper Environmental Services, LLC  (Oct. 31, 2014)

Trace metals are found at low concentration in the ambient environment and are associated with adverse health effects. The gold standard metal measurement is Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES); however, sample preparation is laborious and expensive. The Xact 625 metals monitor uses non-destructive X-ray fluorescence ...

Typing of Legionella strains isolated from environmental samples in Crete, Greece, during the period 2004–2011

by IWA Publishing  (Dec. 11, 2013)

In Greece, standard tests are performed in watering and cooling systems of hotels. A total of 1,494 water samples were collected during 2004–2011 from 124 hotels from four regions in Crete (Greece). Samples were tested for the presence of Legionella spp.; 103 isolates were identified and typed by polymerase chain reaction (PCR)-sequencing ...

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