analytical chemistry Articles | Environmental XPRT

Analytical chemistry in the European higher education area

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Jan. 1, 2004

Integrated Environmental Site Characterization and Analysis: EQuIS in the Military (PDF)

The seamless integration of subsurface environmental geology and analytical chemistry data with the latest tools and technology for data management and analysis make site characterization and investigation more efficient than ever before. EarthSoft’s Environmental Quality Information System—EQuIS—has been chosen by many military agencies and organizations for the management of analytical ...

By EarthSoft, Inc

Chemical Pollutants in Water Emerge

Recent advances in contaminant identification methodologies, sampling instrumentation, and analytical chemistry have caused an explosion of knowledge about the presence of previously undetected organic micropollutants. While it doesn’t follow that the mere presence of chemical contaminants results in harm, public health experts, regulators, and others aren’t sitting idly ...

Apr. 1, 2010

By Acta Group

The role of measurement uncertainty in doping analysis

The determination of measurement uncertainty is a critical issue in all fields of experimental science; its importance becomes maximal in the specific case of forensic analytical chemistry (including doping analysis), where uncertainty has not only to be calculated with precision, but it also has to be both small and reliable enough to support effective decision making. This contribution gives a ...

Jun. 3, 2005

By Inderscience Publishers

pH measurement: Six technical tips

The pH value is one of the most important and therefore also one of the most frequently measured quantities in analytical chemistry. Sometimes, a simple pH test strip is sufficient for making a rapid check; precise pH meters are, however, required whenever accurate measuring results are needed. Such a pH meter is available in nearly every laboratory and is generally ready for use at a moment's ...

Jul. 28, 2016

By Metrohm AG

New Analytical Chemistry Paper on CHARON PTR-TOFMS Performance

Bulk Organic Aerosol Analysis by PTR-MS with High Precision & Accuracy Very recently, we have published a technical note in Analytical Chemistry introducing an improved methodology for the determination of organic aerosol properties with CHARON PTR-TOFMS. By analysis of a large set of pure compounds we were able to derive an algorithm to correct for ionic fragmentation. Therefore CHARON is ...

Oct. 2, 2019

By Ionicon Analytik Ges.m.b.H.

Differentiating Polychlorinated Biphenyls (PCB’s) by GC / FID / ECD

The analytical chemistry of PCB’s is rigorous, demanding the highest quality in sample preparation and analytical technique. Insufficient sample extraction and inappropriate methods of sample clean-up are the most common sources of error in PCB analysis, which causes significant interference in the chromatography. However, even in relatively clean samples the problem remains to ...

Jan. 1, 2006

By Buck Scientific Inc

EDXRF Analysis of Lead, Cadmium, Silver, Copper in Lead-Free Solder Materials

X-ray fluorescence analysis can be used to quickly and easily analyze samples in solid, powder, and liquid states nondestructively, and is therefore widely used as a screening technique for compliance with the RoHS/ELV directives. A large amount of lead-free solder is used for surface-mount circuit boards. Here we evaluated the sensitivity of analysis of Pb, Cd, Ag, and Cu in lead-free solder ...

Nov. 17, 2011

By Shimadzu Scientific Instruments Inc

Evaluation of Indian input to the international nuclear information system database

The study is aimed at analysing the INIS bibliographic records of publications in India during the period 2000-2008. The analysis includes the inputting trend, time-lag, contributing journals, country collaboration, content analysis through the classification and keywords. India has a total number of 14,697 records input to the database with an yearly average of 1631 records. The timeliness of ...

Aug. 22, 2011

By Inderscience Publishers

Introduction to Environmental Testing in the USA

Environmental laboratories practice “applied analytical chemistry” by analyzing samples using a list of potential contaminants to determine how much, if any, of the contaminant is present. These contaminants, the methods used to analyze for them, and the maximum amount of contaminant allowed in the sample are defined by regulation. This paper provides an overview of these ...

Apr. 3, 2015

By Shimadzu Scientific Instruments Inc

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. 17, 2011

By Shimadzu Scientific Instruments Inc

Assessment of organic micropollutants occurrence in treated wastewater using heat shock protein 47 stress responses in Chinese hamster ovary cells and GC/MS-based non-target screening

Combining bioassays and analytical chemistry screening is a powerful approach to assess organic micropollutants which are the main contributors to toxic potential in complex mixtures of treated wastewater (TWW). The aim of this study was to perform a comprehensive toxicity assessment of treated effluents using stress response bioassays and then to assess the occurrence of the organic ...

Sep. 8, 2016

By IWA Publishing

What is laser ablation and why you need a nitrogen generator

Laser ablation is becoming a popular technique for direct solid sampling in analytical chemistry. But what exactly is laser ablation and why would you need a nitrogen generator for it? Laser ablation is a process in which a laser beam is used to remove a portion of mass from a sample, usually as a sampling method for isotopic or elemental analysis of a solid sample. The mass from the sampling ...

Mar. 4, 2020

By Peak Scientific Instruments Ltd

Nitrate Biosensor - Case Study

BACKGROUND In 1998, Dr. Bill Campbell and his team published a peer-reviewed journal article in Analytical Chemistry on the construction and characterization of Nitrate Reductase-Based Amperometric Electrode and Nitrate Assay of Fertilizers and Drinking Water. This publication set the stage for the nitrate biosensor project. In this publication, we found that nitrate reductase was indeed capable ...

Apr. 24, 2020

By NECi Superior Enzymes

Productivity at the Commercial (or pay per test) Laboratory - White Paper

Commercial environmental laboratories practice “applied analytical chemistry” by analyzing samples using a list of potential contaminants to determine how much, if any, of the pollutants are there. The data collected may be used by the laboratory’s client to, among other reasons, satisfy a regulatory permit, or for routine monitoring as required by a regulatory agency, such as ...

Mar. 3, 2015

By Shimadzu Scientific Instruments Inc

EQuIS© and the New Jersey Department of Environmental Protection Private Well Testing Act

Many military bases in the United States have had environmental clean-up programs in place since the early 1980’s. On some of these facilities extensive multi-stage investigations and remediation projects have generated large amounts of data. The management and effective use of the accumulated information for subsequent clean-up work is a daunting task unless electronic data management software ...

By EarthSoft, Inc

News on Air 2013, Volume 1: Products for Sampling

For decades, Sigma-Aldrich has been a key supplier of innovative & high technology air monitoring products for various areas of gas/air sampling. Enclosed, you will find an overview on new and interesting devices to improve or simplify your air sampling. Supelco and Sigma-Aldrich offer a range of active and passive air sampling products, in addition to various analytical chemistry tools ...

Feb. 13, 2014

By MilliporeSigma

Interview with the chairman, Kevin O`Donovan

What's your background? After a degree in Biological Sciences I commenced a PhD at one of the London medical schools. After a year I realised that research was not really for me so I started as a salesperson in a Life Science Research Instrument company. I turned out to be a pretty good salesman and, after completing an MBA whist working as marketing manager for the same company, I started my ...

Jun. 20, 2016

By Specac Limited

Sensors and Sensibility: This Breakthrough Could Lead to Better Ways for Spotting Dangerous Gases

Radislav Potyrailo, a principal scientist at GE Research in Niskayuna, New York, has a saying he picked up from one of his mentors: “A day in the library is worth a year in the lab.” So, while other scientists might spend their free time hiking or fishing, Potyrailo likes to pore over the footnotes of scientific journal articles looking for details about how others have tried and ...

Jul. 22, 2020

By GE Renewable Energy

What is a Spectrometer?

The characteristics of a white LED light differs greatly, when compared to a yellow CFL. Without any special tools, one can see that the LED emits a clear white color, while the CFL generates yellow light. Going one step further, using a spectrometer, one will be able to “dissect” the light sources and see that they are composed of other colors in the visible light spectrum, such as ...

Feb. 3, 2017

By Larson Electronics LLC

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