ion analysis Articles | Environmental XPRT

Group-IV and V ion implantation into nanomaterials and elemental analysis on the nanometre scale

Novel group-IV and V nanomaterials are produced by newly set-up low energy ion implantation and electron beam annealing (EBA) systems at GNS Science. This review paper introduces the community to GNS's new nanotechnology systems. Three representative examples on the use of the systems for nanotechnology research and development are given for (a) subsurface lead ion implantation into Si resulting ...

Feb. 6, 2009

By Inderscience Publishers

SIMS depth profile analysis of WC-Co composite used in wood materials machining after nitrogen ion implantation

Abstract: SIMS depth profile analysis of WC-Co composites used in wood materials machining after nitrogen ion implantation. The paper presents the analysis of depth profiles WC-Co samples obtained using the SIMS method. The surface of samples was modified in the process of nitrogen ions implantation. Secondary ion mass spectrometry (SIMS) is a very useful technique for the analysis of layered ...

Dec. 8, 2020

By Hiden Analytical Ltd.

Multiple responses analysis and modeling of Fenton process for treatment of high strength landfill leachate

Landfill leachate is one of the most recalcitrant wastes for biotreatment and can be considered a potential source of contamination to surface and groundwater ecosystems. In the present study, Fenton oxidation was employed for degradation of stabilized landfill leachate. Response surface methodology was applied to analyze, model and optimize the process parameters, i.e. pH and reaction time as ...

Jan. 1, 2011

By IWA Publishing

30-minute amino acid analysis of hydrolyzed samples

Pickering Laboratories specializes in the manufacturing of cation-exchange columns and eluants for amino acid analysis. No other tech¬nique has been shown to match the reproducibility and selectivity of ion-exchange analysis with post-column Ninhydrin detection. Nor is there a chromatography technique that provides as much information; the 570/440 nm signal ratio for each amino acid is a ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

Adsorption characteristics of bio-adsorbent on chromium(III) in industrial wastewater

The removal of chromium(III) (Cr(III)) from industrial wastewater by various low-cost methods has been widely investigated. In this paper, a type of bio-adsorbent was prepared using rice straw modified by fermentation and simple chemical treatment. The aim is to detect the adsorption mechanism and characteristics on Cr(III) ions. The analysis shows that the bio-adsorbent possesses four ...

Jun. 16, 2015

By IWA Publishing

Online sodium & calcium ion analysis for monitoring of water softener systems - Case Study

Calcium (Ca++), Magnesium (Mg++), Sodium (Na+), Ion Analysis Before and After Water Softener to determine Water Quality Feed to Boilers Industrial grade sodium ion selective membrane and application engineered solid state conductive polymer reference can withstand the rigors of industrial process lines Sodium calibration system has been optimized to yield reproducible results in a variety of ...

Mar. 1, 2005

By Advanced Sensor Technologies, Inc. (ASTI)

Quantitative Analysis of Pyrethroids in Soil and Sediment Using Triple Quad LC-MS/MS

Pyrethroid pesticides are used widely around the world as agricultural and household insecticides. Synthetic pyrethroids are slightly soluble in water and easily adsorbed in soil. In recent years, pyrethroid residues have been confirmed in soil and sediment in both agricultural and urban areas. Pyrethroids, while posing little danger to humans, exhibit a high toxicity to aquatic organisms and ...

Nov. 11, 2015

By Shimadzu Scientific Instruments Inc

Thermal lens spectrometric determination of ammonium in water samples based on indophenol formation with sodium salicylate

For the first time, a thermal lens spectrometric (TLS) detection was applied for the determination of ammonium based on indophenol blue reaction. The blue–coloured indophenol was detected following excitation by a krypton laser at 647 nm. The achieved limit of detection (LOD) and limit of quantification (LOQ) were 8 ng/mL and 25 ng/mL, respectively. This represents an improvement of 20 times when ...

Feb. 9, 2015

By Inderscience Publishers

Biosorption of rare-earth elements by Ganoderma lucidum: mechanistic studies

Among the various technologies being suggested for heavy metal management, biosorption has emerged as the most promising. Though biosorbents have been used for most toxic metals, few reports on rare earths have appeared. This is primarily because rare earths are not traditionally considered as toxic, though they are. Secondly, rare earths are limited geographically, and only limited areas are ...

Sep. 17, 2009

By Inderscience Publishers

Removal of Nickel from Cobalt Sulphate Electrolyte Using ISEP® Continuous Ion Exchange

Untitled Document Anglovaal Mining Limited (Avmin) is increasing production at the Chambishi Metals Cobalt Plant in Zambia through its COSAC Project. The increase in cobalt and copper production will increase the nickel input to the cobalt purification circuit. In order to maintain electrowon cobalt metal quality, it is therefore necessary to remove this nickel from the cobalt ...

May 10, 2005

By Calgon Carbon Corporation

Perchlorate adsorption onto orange peel modified by cross-linking amine groups from aqueous solutions

Orange peel was made into a highly efficient bio-sorbent by modification with cross-linking amine groups for perchlorate removal. Bench-scale experiments were performed to explore the factors affecting the perchlorate adsorption onto the modified orange peel (MOP). Perchlorate could be removed effectively at a wide range of pH (from 1.5 to 11). The maximum adsorption capacity of MOP for ...

Jun. 3, 2015

By IWA Publishing

Effects of metal ions on biomass and 5-aminolevulinic acid production in Rhodopseudomonas palustris wastewater treatment

This work investigated the effects of eight metal ions on Rhodopseudomonas palustris growth and 5-aminolevulinic acid (ALA) yield in wastewater treatment. Results show that metal ions (Mg2+ of 15 mmol/L, Fe2+ of 400 μmol/L, Co2+ of 4 μmol/L, Ni2+ of 8 μmol/L and Zn2+ of 4 μmol/L) could effectively improve the chemical oxygen demand (COD) removal, Rp. palustris biomass and ALA yield. The ...

Oct. 1, 2015

By IWA Publishing

Investigation of photo-assisted and crude peroxidase mediated transformations of chlorinated phenols (CPs) from spiked and industrial wastewaters: identification of reaction products

This work focused on photo-assisted crude peroxidase mediated transformations of chlorinated phenols (CPs) from spiked and industrial wastewaters and the identification of reaction products formed. Garden radish Raphanus sativus was the source of crude peroxidase. No chlorine bearing compounds were detected by gas chromatography-high resolution mass spectrometry analysis. Under identical test ...

Aug. 19, 2015

By IWA Publishing

Multiply-charged ion nanobeams

Due to the strong evolution in the field of nanotechnologies and the continuous miniaturisation of electronic components, multiply-charged ion nanobeams would be a promising tool in this field of research. Either for surface modification or local (nanometre scale) surface analysis purposes, studying the feasibility of such beams is of strong interest. In the present contribution, we present a ...

Jun. 16, 2008

By Inderscience Publishers

Simplifying the Screening Workflow for Extractables Testing: Infographic

The safety of pharmaceuticals, cosmetics, and foodstuffs may be compromised by chemical compounds in the various types of packaging and food contact materials (FCMs) that are in direct contact with the consumer product. Due to continuously increasing global regulations, the characterization of extractables and leachables from packaging and FCMs has become more critical than ever for the ...

Feb. 7, 2017

By Climate Institute

Applying hourly measurements of meteorological data and aerosol soluble ions in Taipei Basin, Taiwan

This study applies observational data composed of hourly weather and aerosol to discuss the aerosol characteristics within different weather systems. Based on cluster analysis, spring weather in Taipei Basin 2004 was characterised as five weather systems: humid/low south wind speed, dry cold/high east wind speed, humid cold/east wind, dry cold/northeaster, and northwestern convection wind. Under ...

Apr. 8, 2009

By Inderscience Publishers

Surface coal mining influences on macroinvertebrate assemblages in streams of the Canadian Rocky Mountains

To determine the region specific impacts of surface coal mines on macroinvertebrate community health, chemical and physical stream characteristics and macroinvertebrate family and community metrics were measured in surface coal mine‐affected and reference streams in the Canadian Rocky Mountains. Water chemistry was significantly altered in mine‐affected streams which had elevated conductivity, ...

May 2, 2015

By John Wiley & Sons, Ltd.

Removal of Pb(II) from aqueous solutions by graphene oxide aerogels

This paper reports the application of graphene oxide aerogels (GOAs) for adsorption of lead(II) ions from aqueous solutions. The aerogels were fabricated from graphene oxide (GO) colloidal suspensions by unidirectional freeze drying method. The synthesized GO powders, as well as the aerogels, were thoroughly characterized by various techniques. The experimental data showed that the kinetic of ...

Apr. 28, 2016

By IWA Publishing

Detection of metal ions in the body using hydrogen gas

In light of recent reports in The Guardian newspaper regarding a two-fold increase in issues relating to medical devices since 2008, we wanted to highlight a study conducted by Peak Scientific and Analytik Jena into the detection of metal ions in different matrices into the body following joint replacement surgeries. The Implant Files' investigation findings published by The Guardian newspaper ...

Dec. 3, 2018

By Peak Scientific Instruments Ltd

APSI mode simplifies MS spectral analysis

Analysis of gaseous species by quadrupole mass spectrometry involves ionisation of the molecular species most typically by the electron bombardment technique, the ionisation process creating fragmentation ions additionally to the parent ion. Spectral interpretation can then be compromised by spectral interference in some gaseous mixtures. Hiden Analytical introduce the APSI(Appearance Potential ...

Jun. 30, 2017

By Hiden Analytical Ltd.