spectrometry Articles | Environmental XPRT

Ion Mobility Mass Spectrometry – Catch the Excitement!

Interest in ion mobility mass spectrometry (IMS) technology is growing rapidly. The signs are everywhere. Since the year 2000, the number of abstracts submitted to ASMS mentioning ion mobility has grown more than 10-fold – from 30 to more than 350 in 2015. For most of that time, ion mobility has been available commercially in high-end research instruments or in homemade platforms. Waters ...

Mar. 9, 2016

By Waters Corporation

Identification of compounds in water by high resolution mass spectrometry

A chemical manufacturer for the rubber and plastics industries used over 100 chemicals for syntheses. For at least 30 years, some fractions of these chemicals, synthesis products, and their byproducts were transferred to a waste pond. After exposure to air, rain, solar radiation, and soil particles, fractions of these compounds, reaction byproducts, and transformation products had migrated into ...

Jan. 1, 2008

By US EPA - Environmental Protection Agency

Determination of hexavalent chromium in toys by using UV/Vis Spectrometry

Toy safety is a joint responsibility among governments, the toy industries, regulatory bodies and parents. The toy safety regulations are intended to reduce potential risks children could be exposed to when playing with toys. Enforcement of the regulations aims to identify those toys that do not comply with the legislation and remove them from the market. The toxic elements that may be present in ...

Oct. 27, 2009

By PerkinElmer, Inc.

What’s the big deal about ion mobility mass spectrometry?

Ion mobility spectrometry (IMS) is a technique that differentiates ions based on their size, shape, charge, and mass. While often used in small, portable devices at airports and remote locations for rapidly detecting small molecules whose mobility is known (for example, certain narcotics and explosives) when coupled with liquid chromatography-mass spectrometry (LC/MS), IMS provides an orthogonal ...

Apr. 28, 2016

By Waters Corporation

Determination of Cadmium in the Tap Water by Flameless Atomic Absorption Spectrometry

The standard for the allowable concentration of cadmium in tap water has been revised downward from 0.01 mg/L or less to 0.003 mg/L or less according to Japan's "Ministerial Ordinance for Partial Revision of the Ordinance Concerning the Water Quality Standard" (The Ministry of Health, Labour and Welfare Ordinance No.18) (February 17, 2010). The revised standard has been in effect since April 1, ...

Nov. 16, 2011

By Shimadzu Scientific Instruments Inc

Analysis of radioisotope concentrations in sediments using γ-ray spectrometry

The concentrations of some naturally occurring radioisotopes in sediments of the Kufranja river basin in Jordan were determined by means of γ-ray spectrometry with precise calibration of energy and efficiency. The nuclides' concentrations were found by either direct measurement of their activities, as in the case of 226Ra and 40K, or through the measurements of the ...

Mar. 20, 2006

By Inderscience Publishers

Facilitating Drug Discovery with HDX-Mass Spectrometry: Webinar Highlights

Genetic Engineering and Biotechnology News and Waters recently conducted a webinar on how hydrogen deuterium exchange mass spectrometry (HDX-MS) can improve biotherapeutic drug discovery and development processes. Our first speaker, Prof. Ganesh Anand — a leading expert on HDX-MS at the National ...

May 22, 2016

By Waters Corporation

Measurement of Cesium in Tap Water and Soil by Atomic Absorption Spectrometry

Recently, technologies that can efficiently remove radioactive cesium (chiefly Cs-137) from water and soil have been actively researched. The study and evaluation of these removal technologies can be conducted using Cs-133, an easy-to-handle, stable substance, yet chemically similar to Cs-137. Cesium can be analyzed using atomic absorption spectrometry and ICP emission spectroscopy, which are ...

Nov. 18, 2012

By Shimadzu Scientific Instruments Inc

Determination of formaldehyde content in toys using UV/Vis Spectrometry

As product safety regulations for industry are becoming stricter, more testing at lower levels is required for toxic elements or hazardous organic chemicals such as formaldehyde in children’s toys/clothing. Formaldehyde resins are used in fabrics to bind pigments to the cloth, as a fire retardant and to provide stiffness. In cotton and cottonblend fabrics they are used to enhance wrinkle ...

Oct. 27, 2009

By PerkinElmer, Inc.

Mass Spectrometry Makes Cents for UC San Diego Clinical Laboratory

“Fast is fine; but accuracy is everything.” The quote is attributed to the famous Wyatt Earp, a sharpshooter and lawman who, with help from his two brothers, sent three outlaws to their graves in the Gunfight at the O.K. Corral in Tombstone, Arizona in 1881. One hundred ...

May 1, 2016

By Waters Corporation

Determination of radium-226 in phosphate fertilisers and gypsum by gamma-ray spectrometry

The 226Ra isotope was determined in 17%, 20% and 46% phosphate fertilisers and in gypsum. The fertiliser samples were dissolved in 10% nitric acid solution. The barium sulfate method was used for the precipitation of 226Ra. An alkaline fusion method was used to separate the 226Ra from the gypsum. The 226Ra concentrations present in these materials were between 10-4 and 10-5µg ...

Sep. 14, 2009

By Inderscience Publishers

Determination of Sulfonamide Antibiotics in Wastewater by Liquid Chromatography – Tandem Mass Spectrometry

Introduction Antibiotics are widely used in human and veterinary medicine for the prevention and treatment of bacterial infectious diseases. An important but often disregarded aspect of antibiotic use is the fate of antibiotic residues entering the environment. Pharmaceutical industry wastewater, improperly-disposed of unused antibiotics, and non-metabolized antibiotics excreted by humans can ...

Sep. 25, 2007

By Thermo Scientific - Air Quality Instruments

Fertilizer Analysis Using Inductively Coupled Plasma Atomic Emission Spectrometry

Wastewater disposal sludge, composed of a wide variety of substances, is effectively recycled as fertilizer. However, such recycling requires prior quality confirmation testing of the main constituents as well as the harmful constituents to ensure the safety of the resultant sludge fertilizer. In the case of fertilizer classified as "ordinary fertilizer," the Japan's Fertilizer Control Law ...

Nov. 16, 2011

By Shimadzu Scientific Instruments Inc

Precise fertilizer management - Grass analysis by X-ray fluorescence spectrometry

A significant proportion of agricultural land in Europe is grass for livestock grazing. For example, in the UK as a whole, the combined area of grassland is around 6,997,000 hectares, nearly 38% of the total agricultural area [2]. In NorthernIreland, where clay soils and a temperate climate are particularly suitable for grass production, this percentage is much higher. Here about 95% of farmland ...

Jan. 31, 2007

By Malvern Panalytical - a Spectris Company

Mass spectrometry meets medical sciences: making headway in molecular disease diagnostics

No ...

Dec. 31, 2004

By Springer

Tandem Quad Mass Spectrometry: The Foundation of Product Safety, Efficacy, and Decision-making

There is a rightfully high expectation from consumers that the amounts of compounds and ingredients that producers report in their goods are accurate down to trace levels. Whether personally or professionally, we all rely on this analytical information coming from laboratories that enables critical decisions to be made. Analytical chemists have been performing quantitative studies for ...

May 16, 2016

By Waters Corporation

Comparison of spectrometry with arsenazo III and neutronic activation for U and Th determination in phosphogypsum

Phosphogypsum is a byproduct from the phosphoric acid industry which is formed by crystallisation during sulfuric acid attack on phosphate rocks. While the composition of phosphogypsum is dihydrated calcium sulphate, the material can contain high levels of impurities that exist in phosphate rocks, such as radionuclides from the 238U and 232Th series. The most common way of disposing of ...

Dec. 14, 2009

By Inderscience Publishers

Estimation of water quality by UV/Vis spectrometry in the framework of treated wastewater reuse

The aim of this study is to investigate the potential of ultraviolet/visible (UV/Vis) spectrometry as a complementary method for routine monitoring of reclaimed water production. Robustness of the models and compliance of their sensitivity with current quality limits are investigated. The following indicators are studied: total suspended solids (TSS), turbidity, chemical oxygen demand (COD) ...

Apr. 21, 2017

By IWA Publishing

Development and Applications of a Combined FastGC Proton-Transfer-Reaction Mass Spectrometry Instrument

Proton-Transfer-Reaction Mass Spectrometry (PTR-MS). which is a very sensitive method for real-time gas analysis, has become a widespread technology in the food and flavor research area for over more than 15 years [1]. However, as in this field often isomeric compounds have to be identified and quantified independently, there is a need for additional measures to increase selectivity. In the past ...

Dec. 7, 2014

By Ionicon Analytik Ges.m.b.H.

Determination of trichloramine in drinking water using headspace gas chromatography/mass spectrometry

Trichloramine (NCl3) is one of the major causes of the chlorine odor in drinking water. In the present study, a method was developed for analysis of NCl3 concentration in water using headspace gas chromatography/mass spectrometry (HS–GC/MS). For quantification of NCl3, m/z of 51 was selected because other major m/z of NCl3 were also observed as fragments of trichloromethane (CHCl3) and the peaks ...

Feb. 28, 2010

By IWA Publishing

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