Chromatography Data System Articles

Gas Chromatography and Breathe Safely While Using Nitrogen

Gas Chromatography and Breathe Safely While Using Nitrogen Gas ...

Jan. 18, 2018

Performance-Based Measurement Systems

Many of the Environmental Protection Agency's (EPA's) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not ...

Jan. 1, 1999

By WSP | Parsons Brinckerhoff

Software solution for standard and Highly sophisticated GPC systems case study

Today's analytical laboratories require universal, flexible and open software solutions to cope with the ever changing needs. This report illustrates how these requirements for chromatographic data processing software can be met in different types of laboratories. Acquisition and Processing of Chromatography Data In former times an analytical chemist spent most of the time with ...

Sep. 25, 2014

By Polymer Standards Service GmbH (PSS)

ACQUITY Arc System: Transferring Validated HPLC Methods within USP Guidelines

The thought of transferring established high performance liquid chromatography (HPLC) methods onto a another vendor’s LC, or a new platform like UHPLC/UPLC, may cause a bit of anxiety for those that may be unaware of how easy it can be. The reason that the topic of analytical method transfer induces so much angst is that for the transfer of an LC method to succeed, the method has to work as ...

Mar. 8, 2016

By Waters Corporation

Degradation mechanism of Methyl Orange by electrochemical process on RuOx–PdO/Ti electrode

The electrochemical degradation of Methyl Orange in 0.1 M NaCl solution over RuOx–PdO/Ti anode was investigated. Chemical oxygen demand (COD), ion chromatography (IC), Fourier Transform Infrared Spectroscopy (FTIR) and Gas chromatography-mass spectrometry (GC-MS) were employed to detect the intermediates formed during the electrochemical degradation. In the present reaction system, Methyl Orange ...

Jan. 1, 2011

By IWA Publishing

Air emissions impact measurements at a perchloroethene remediation site

As part of an U.S. EPA time critical removal action, an air monitoring system was established to measure real-time impacts of perchloroethene (PCE) on the surrounding areas. The soils and groundwater beneath the site (located in West Fargo, North Dakota) were treated using in situ heating of soil and groundwater, with the produced vapors collected using conventional vapor extraction. In order ...

Feb. 24, 2010

By VOC Technologies

Evaluation of benzene exposure in adults and urinary s-phenylmercapturic acid in children living in Adelaide, South Australia

Abstract: Benzene Exposure was evaluated in adults and children living in Adelaide, South Australia by measuring benzene and urinary s-phenylmercapturic acid (SPMA). To determine of benzene exposure in each subject the personal passive samplers was used and samples were analyzed by gas chromatography system equipped to flame ionization detector. The level of SPMA was determined by competitive ...

Apr. 20, 2006

By Center for Environment and Energy Research & Studies (CEERS)

Investigation of the effects of temperature and sludge characteristics on odors and VOC emissions during the drying process of sewage sludge

Sludge drying is a necessary step for sludge disposal. In this study, sludge was collected from two wastewater treatment plants, and dried at different temperatures in the laboratory. The emission of odor and total volatile organic compounds (TVOCs) during the sludge drying process were determined by an online odor monitoring system. The volatile organic compounds (VOCs) in off-gas were analyzed ...

Aug. 6, 2015

By IWA Publishing

Unplanned urbanization: Assessment through calculation of environmental degradation index

Abstract: Benzene Exposure was evaluated in adults and children living in Adelaide, South Australia by measuring benzene and urinary s-phenylmercapturic acid (SPMA). To determine of benzene exposure in each subject the personal passive samplers was used and samples were analyzed by gas chromatography system equipped to flame ionization detector. The level of SPMA was determined by competitive ...

Apr. 19, 2006

By Center for Environment and Energy Research & Studies (CEERS)

Natural Gas: Complete Analytical Solution

Chromatotec® has developed in its Research & Development laboratories, a new instrument for hydrocarbon (C1-C6+) measurements and calorific values as well as WOBBE index computation. This analyzer is based on chromatography principle using a Thermal Conductivity Detector (TCD). The sample will be separated into the column and quantified by the detector. A difference of thermal ...

May 1, 2014

By Chromatotec Group

How a contract research lab advanced its polymer characterization capabilities

Realizing the Advantages of Ultra-High-Performance Size Exclusion Chromatography Compared to GPC Intertek is a global provider of quality and safety services designed to help businesses improve products, assets and processes, overcome market constraints and reduce risks. From auditing and inspection, to testing, training, and certification, Intertek enables customers to meet end ...

Jan. 4, 2017

By Waters Corporation

Ultra-trace arsenic speciation at Columbia Analytical

Ultra-trace speciation of arsenic and other metals is performed using a variety of techniques tailored to the specific combination of species, matrix, and detection limits required. Currently, two analytical systems are applied: Ion Chromatography-Inductively Coupled Mass Spectrometry (IC-ICP-MS) and Hydride Generation-Cryogenic Gas Chromatography-Flame Atomic Absorption Spectrometry ...

Sep. 24, 2009

Smart Infrastructure is Key for QA/QC

Paperless, or more accurately integrated, labs enjoy streamlined operations with better data, while minimizing costs, validation and maintenance. Laboratories responsible for QA/QC are a sum of many parts, but no part is more important than data. Data is THE product, and the integrity of that data is more than critical to today’s pharmaceutical laboratories. So what happens when processes ...

Jul. 10, 2014

By Poplar Solutions, LLC

Ultra-Pure Proof with Mass Detection

Before joining the newly formed Reach Separations in February 2012, I spent five years at AstraZeneca in analysis and purification (latterly as group lead in reversed phase and chiral purification). This experience gives me a good perspective of both the needs of “big pharma” and, more recently, the needs of a specialist separation solution provider. My ...

Feb. 10, 2017

By Waters Corporation

$Quantifying the anthropogenic fraction of fatty alcohols in a terrestrial environment$

Quantifying the anthropogenic fraction of fatty alcohols in a terrestrial environment

Fatty alcohols are naturally produced hydrocarbons present in all living organisms. They are also used in detergent and cosmetic formulations, may be sourced from either petroleum or biological materials, and are typically disposed of down the drain. This study was conducted on the Luray catchment, Virginia, USA, where sales data indicate that approximately 2 kg of fatty alcohols from detergent ...

Apr. 19, 2012

By John Wiley & Sons, Ltd.

Time-resolved ammonia measurement in vehicle exhaust

The objective of this study was to identify the influence of sampling and analytical approach on the quality of NH3 emission data of a gasoline-fuelled three-way catalyst vehicle. NH3 concentration measurements have been performed in the tailpipe and in the diluted exhaust after a constant volume sampling (CVS) system during five different test cycles. Chemical ionisation mass spectrometry ...

Oct. 28, 2004

By Inderscience Publishers

The Advantages of a Targeted 2D LC Approach

Webinar Highlights | Focus on the Relevant: The Advantages of a Targeted 2D Chromatography Approach Hi folks, I’m Daniel Root, Senior Product Marketing Manager for Multidimensional LC Systems at Waters. I recently conducted a webinar that addressed multidimensional liquid chromatography – an exceptional tool for the improvement of characterization and separation of ...

Aug. 10, 2016

By Waters Corporation

Thermo Scientific connects at GPSG Brazil delivers enterprise-level productivity linking laboratories to ERP - case study

The Global Pharmaceutical Supply Group (GPSG) Brazil is an APILA unit of Janssen-Cilag Farmacêutica Ltda., (www.janssen-cilag.com.br) located in São Paulo, Brazil. Janssen-Cilag is one of the world’s leading research-based pharmaceutical companies specializing in pain management and fungal disease. Janssen-Cilag is a member of the Johnson & Johnson family of companies; the ...

Dec. 16, 2015

By Thermo Fisher Scientific, LIMS & Laboratory Software

Changing the Rules with Mass Detection

How simplified detectors can provide mass data for every analytical run and speed up method development With access to multiple mass spectrometry systems of varying degrees of sophistication, Davy Guillarme (University of Geneva, Switzerland) wasn’t actively looking for new mass detection solutions. Nevertheless, the Waters ACQUITY QDa mass detector caught his eye. Why? Because it opens a ...

Feb. 13, 2017

By Waters Corporation

Proposed plans for UCMR Program

At an April 2010 stakeholder’s meeting, the EPA discussed proposed plans for the third phase of the Unregulated Contaminant Monitoring Regulation (UCMR) program. If approved, approximately 4,800 public water utilities will be required to monitor up to 30 contaminants starting in 2013. The second phase of UCMR (UCMR 2) sampling, which began in 2008, concludes at the end of this year. UCMR 2 ...

Dec. 6, 2010

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