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toxicity sampling Applications

  • Waste water respirometry solutions for toxicity tracking

    If toxicity is identified in a mixed sewage entering a treatment works, the problem for the plant manager is to track and identify the source of the toxicity. This can be done by sampling the effluent stream at various points in its length. By working in a logical sequence back up the sewer network the number of samples can be minimised. This type of testing should be rigorously enforced for new product introduction by a waste producer, as well as sampling the effluents directly at source. The samples would be tested against the activated sludge of the receiving works, using the Respiration Inhibition Test or the Nitrification Inhibition Test.

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

  • Waste water respirometry solutions for toxicity based consents

    Water companies, water authorities or publicly-owned treatment works (POTW) need to have some knowledge of the composition of the wastes they it receive. In addition to testing for ammonia and BOD or COD levels, treatment works can license industrial discharges on the basis of concentrations of some of the known toxic compounds. However, it is recognised that very many non-regulated toxic materials still enter the treatment works and reduce the efficiency of biodegradation, and may cause toxic shock. The way is now open for more widespread use of direct toxicity tests as a basis for toxicity-based consents. Samples of the industrial effluent are collected at source, for testing on the actual bacteria of the receiving activated sludge. The tests used are the Respiration Inhibition Test and the Nitrification Inhibition Test. Note that this approach mirrors that of the regulators of discharges to receiving waters, who are now using direct toxicity tests (DTA) or whole effluent toxicity tests (WET tests) in order to protect the receiving environment.

    By Strathkelvin Instruments Ltd. based in Motherwell, UNITED KINGDOM.

  • Determination of Mercury in Water Samples by HG-AFS

    Mercury and its sompounds are highly toxic materials and can be transferred into the human body via water; the concentration of mercury in water generally is very low. With the superior sensitivity of Aurora`s Atomic Fluorescence Spectrometer, the LUMINA 3300, direct measurement of mercury in water sample is possible.

    By Aurora Biomed Inc. based in Vancouver, BRITISH COLUMBIA (CANADA).

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    Concerned about PAHs in Parking Lot Sealcoats?

    There is growing concern - and regulations in the works - over the use of sealcoating products due to their high PAH content.  In the United States and elsewhere, most sealcoats are made from coal tar which can be toxic to aquatic life and threaten public water supplies from rain and runoff. Sitelab can be used to quickly check the concentrations of polycyclic aromatic hydrocarbons and determine if it's made from coal tar or alternative petroleum based black top sealants.  Got samples?  We'll test them for free!  Contact Sitelab Corporation for details.

    By Sitelab Corporation based in West Newbury, MASSACHUSETTS (USA).

  • Pesticide and toxin screening for the food industry

    The number of pesticides and other potentially dangerous toxins is increasing constantly, posing special analytical challenges. It is crucial to screen food for the presence of toxins accurately and reliably, and to ensure the safety and quality of nutrition. To do so, we have to have the knowledge about how to deal with several hundreds of different poisonous matters. Bruker delivers solutions that meet the requirements for the identification and quantification of toxicants during the screening of each sample. Bruker’s high-performance TOF-MS is ideally suited for all screening tasks. And Bruker’s SCION series sets a new industry standard for GC-MS. Their easy usability, sensitivisty, robustness and performance make SCION solutions a major technology in food safety.

    By Bruker Corporation based in Billerica, MASSACHUSETTS (USA).

  • US Peroxide Rapid Response

    US Peroxide (USP) is uniquely positioned to rapidly respond to your environmental treatment challenges. USP combines experienced applications and equipment field support with a large inventory of storage systems and pumping modules to respond quickly to time sensitive water and wastewater treatment situations. Advantages With considerable inventory of tank and pump systems as well as our partnerships with leading chemical suppliers, USP can mobilize chemicals and equipment quickly to respond to your rapid response needs, often within 24 hours. We offer dosing options are designed to meet all safety requirements and sized to meet your specific process and dosage rates requirements. Our Applications Engineers and Equipment and Engineering Services teams will provide timely and thorough applications assistance and technical support during the entire project. Download the Rapid Response Solutions Brochure (PDF) Sample Applications Examples of where our Rapid Response Program has successfully addressed treatment challenges include the following: Temporary application of hydrogen peroxide as a source of supplemental dissolved oxygen in biological treatment systems during periods of excessive BOD loading Hydrogen peroxide pretreatment of high strength wastewater to reduce toxicity or BOD/COD prior to biological treatment Emergency hydrogen peroxide treatment of lagoons or ponds to control hydrogen sulfide and other odors Shock cleaning of cooling water systems for biofouling and slime control

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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