spectrometry Articles
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Continuous Arsenic monitoring at US EPA Superfund site
A Cogent Environmental continuous heavy metals analyser, the OVA5000, has been configured to provide accurate Arsenic monitoring data at a US EPA Superfund site in New Jersey, USA, since 2005. The following information will outline the ways in which this technology has helped to protect the environment at the site, ensuring compliance with discharge consents and helping the remediation contractor ...
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Adsorptive removal studies of lead(II) ions using functionalized silica
An adsorbent was prepared by the functionalization of 2-hydroxyacetophenone-3-thiosemicarbazone onto 3-aminopropyl silica by diazotation and characterized by Fourier transmission infra red spectrometry. The functionalized silica was evaluated for removal of lead(II) ions in aqueous solutions. The maximum adsorption capacity 385 μg/g was obtained with an initial concentration of 1,000 μg/L by the ...
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How Does Inverted Electrode Geometry Impact Ion Energy Analysis in Mass Spectrometry?
Right now, the market for mass spectrometry is on the rise. In fact, by the time we arrive in 2029, it is expected to be worth around $9.17 – $14.6 billion. Mass spectrometers examine ions and their mass through the use of magnetic fields and electric fields. By using mass spectrometry to undertake ion energy analysis, we can learn about ions and the different formations of molecules. ...
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Quantum dots exhibit less bioaccumulation than free cadmium and selenium in the earthworm Eisenia andrei
This work addresses the bioaccumulation behavior of cadmium selenide quantum dots (QD) by Eisenia andrei earthworms in a terrestrial environment. Earthworms were exposed to QD‐treated soil for up to four weeks, and analyzed for cadmium and selenium concentration using inductively coupled plasma mass spectrometry. Results were compared to earthworms exposed to cadmium nitrate and selenious acid, ...
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Spectroscopic study of the interaction of heavy metals with organic acids
The ongoing progress in spectroscopic methods of analysis has resulted in a growing interest in the nature of pollutants and hence the possibility of controlling their levels in the environment. This paper describes a study of the fate of some pollutants in both soil and water at two selected areas in the north of Cairo, Egypt. Samples were collected from Shoubra Elkhima and Kafr ElSheikh during ...
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Study on the determination of heavy metals in water samples with ultrasound-assisted dispersive liquid–liquid microextraction prior to FAAS
A new, simple and rapid method based on dispersive liquid–liquid microextraction (DLLME) was developed for extracting and preconcentrating copper (Cu), nickel (Ni), lead (Pb) and cadmium (Cd) in water samples prior to flame atomic absorption spectrometry (FAAS) analysis. 1-(2-thiazolylazo)-naphthol (TAN) was used as chelating reagents, and non-ionic surfactant Triton X-114 and CCl4 as ...
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Determination of heavy metals in roadside soil from Sapanca Area Highway, Turkey
This paper describes the determination of lead and nickel in soil samples from Kinali-Sakarya highway side, near Lake Sapanca. Lake Sapanca is the drinking water source for Sakarya city and its environment. This highway runs between Ankara and Istanbul and carries a heavy traffic volume. Soil samples were taken from different distances from the highway once every two months for a year. Three ...
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Hydrochemical changes in a reservoir that receives water contaminated by acid mine drainage
The aim was to characterize hydrochemical changes that take place in the Sancho reservoir, which receives waters contaminated by acid mine drainage (AMD) from the Meca River (Iberian Pyrite Belt, SW Spain). The sampling procedure comprised bimonthly campaigns carried out between October 2011 and May 2012, in the entrance of the reservoir and in the input river waters. In addition to in situ ...
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Leaves of Lolium multiflorum as indicators of airborne trace element distribution in Central Italy
Ambient air contains particles, ranging from sub-micrometric aerosols to clearly visible dust and sand grains. Plants during evolution developed the ability to maximise light interception and CO2 assimilation and also the efficiency to collect the airborne pollutants. Therefore, plant tissues have been used as indicators of trace elements air pollution. Lolium multiflorum leaves were used as a ...
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Leaching of heavy metals from wastewater sludge, using a thermostatted column
We have previously patented a process for the extraction of toxic and valuable metals from foundry sands using a thermostatted column. In this paper, we describe a similar device for the removal of toxic metals from wastewater sludge. The wastes were finely ground and suspended in an aqueous pulp, and 10-40g of mineral acid or sodium hydroxide were added to reach a pH of 2, 5, 7 and 10, together ...
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Adsorption of heavy metals from aqueous solutions by Mg–Al–Zn mingled oxides adsorbent
In our study, Mg–Al–Zn mingled oxides were prepared by the co-precipitation method. The structure, composition, morphology and thermal stability of the synthesized Mg–Al–Zn mingled oxides were analyzed by powder X-ray diffraction, Fourier transform infrared spectrometry, N2 physisorption, scanning electron microscopy, differential scanning calorimetry and thermogravimetry. Batch experiments ...
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Removal performance of heavy metals in MBR systems and their influence in water reuse
The removal performance of heavy metals by two experimental full-scale membrane bioreactors (microfiltration and ultrafiltration) and the influence of activated sludge total suspended solid (TSS) concentration were studied under real operational conditions. Influent and effluent Be, Sc, V, Cr, Mn, Co, Ni, Cu, Zn, As, Mo, Cd, Ba, Sn, Sb, Pb and U concentrations were analysed by inductively ...
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Ukas accredited laboratory manages its own configurations of Matrix Gemini LIMS case study
By working closely with Autoscribe on the upgrade of Matrix 4 to Matrix Gemini, staff at Cavendish Nuclear's environmental laboratory have become so proficient in using Gemini's one-time configuration tools that they manage and implement any updates and developments to their own system as their needs arise. Background Cavendish Nuclear's environmental laboratory is an internationally recognised ...
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List of 10 Soil Metal Testing Methods
Soil testing has become a must-check item for environmental testing. In recent years, countries around the world have attached great importance to soil testing, which has led to great progress in soil testing technology. At the same time, countries around the world have increased their investment in soil metal testing, using advanced technologies such as spectroscopic analysis technology, ...
By Lifeasible
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Pharmaceutical Analysis: Unveiling the Power of Chromatographic Techniques
Pharmaceutical analysis is a form of using all chemical, physical, biological, microbial and other means and methods to study the chemical properties of drugs. During the testing process, the stability of the drug itself, biological components and clinical drug use must be considered. With the continuous development of high technology, the rapid analysis and detection technology of modern drugs ...
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Determination of the feasibility of using a portable x-ray fluorescence (XFR) analyzer in the field for measurement of lead content of sieved soil
Soil samples collected in housing areas with potential lead contamination generally are analyzed with flame atomic absorption spectrometry (FAAS) or other laboratory methods. Previous work indicates that field-portable X-ray fluorescence (XRF) analysis is capable of detecting soil lead levels comparable to those detected by FAAS in samples sieved to less than 125 μm in a laboratory. A ...
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Fast analysis of semi-volatile organic compounds using PTV-GC–TOF MS
The evaluation of semi-volatile organic compounds (SVOCs) in environmental matrices poses many challenges for the analyst, not least the vast number that may be encountered in any given analysis. In addition, analyte reactivity and the potential for multiple analytes to co-elute makes achieving the required method detection limits (LODs or MDLs) quickly and cost-effectively a formidable task ...
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Assessment of levels and “health-effects” of airborne particulate matter in mining, metal refining and metal working industries
The increased awareness of occupational health, hygiene and safety in recent years has resulted in improvement of working conditions and in reducing workers’ exposure to many toxic substances. However, substantial hazards remain, the number of cases of occupational illness due to hazardous exposure is still high, and new cases will continue to occur if there are no further improvements. During ...
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Online Process Analyzer Installed at F.J. Horgan WTP to Monitor Chloramination
Construction was completed on the City of Toronto's F.J. Hor-gan Water Treatment Plant in 1979, more than 60 years after chloramine had first been used to disinfect drinking water in an Ottawa plant. By then there was little debate about the benefits of chloramination and it was incorporated into the new plant's design as part of the disinfection process. Chloramine is more stable than free ...
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Choosing the Right H2S Analyzer for Your Specific Application
Not all H2S analyzers are created equal, and certain H2S analyzers work better on different applications than they do others. Significant amounts of time, money and headaches can be saved by learning about the different H2S analyzer principles of operation and choosing the correct analyzer for your given application. Measurement of H2S (hydrogen sulfide) is a critical task for product quality ...
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