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lead analyzer Applications

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    Waste water treatment plants Screening area: stripping

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. To ensure the safety of operatives in the screening building/area of waste water treatment works an H2S analyzer has been installed in the main building to complement the protection provided by individual monitors. Chromatographic measurements show that other sulfurous compounds including Methylmercaptans are present in the air in addition to H2S.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Formaldehyde and Acetaldehyde Determination in Air Using Fully Automated On-Line Desorption and Analysis of DNPH Cartridges

    Airborne aldehydes and ketones are collected by passing air through a cartridge containing 2,4-dinitrophenylhydrazine (DNPH). Carbonyl compounds react with the DNPH to form hydrazones, which are immobilized on the cartridge. These compounds can be easily eluted from the cartridge with acetonitrile and analyzed by HPLC with UV detection. Traditionally, this analysis including the workup contains a series of manual steps, which can become time-consuming and could incur experimental error. Automating the extraction of LpDNPH S10 cartridges and putting it in-line with the HPLC analysis will significantly reduce manual labor using this technique and this will improve reproducibility of the method by reducing potential experimental errors by the operator. The automation and unattended operation of the method leads to high throughput for determining airborne formaldehyde and acetaldehyde.

    By Sigma-Aldrich Co., LLC based in Bellefonte, PENNSYLVANIA (USA).

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    Controlled Atmosphere Ovens for Process Industry

    Contact lens controlled atmosphere ovens are used in applications where a specialised environment is required within the oven to achieve a high quality of contact lens. Typically the controlled environment will have a high percentage of nitrogen, and almost no oxygen (inert). The oxygen will need to be measured accurately, whilst the Nitrogen is controlled and regulated, in order to maximise production efficiencies and optimise product quality. Systech Illinois` nitrosave oxygen control system has the ability to perform both of these functions, achieving the ideal oven & heating/curing environment. Systech’s nitrogen control and oxygen analyzers are currently used by a number of leading contact lens manufacturers.

    By Systech Instruments Ltd based in Thame, UNITED KINGDOM.

  • Quantitative Analysis of Steel Using Laser Induced Breakdown Spectroscopy (LIBS)

    For steel analysis, LIBS is ideal for rapid QC (quantitative analysis and detection of contaminants) for raw materials in production, and to check the elemental composition of finished products. LIBS also offers the ability to analyze slag samples that can lead to the recovery of precious metals lost in the steel production process.

    By Applied Spectra, Inc. based in Fremont, CALIFORNIA (USA).

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