chromatography laboratory Articles

Scottish Company Peak Scientific offer solutions to the world helium shortage

Recent international studies have confirmed that the world will run out of helium gas in 25 years if current usage remains unchecked. As well as concerns for the future the gases scarcity has seen its price rise by 70% in recent years. Used in a multitude of applications such as cryogenic applications, purging/pressuring, welding cover gas and controlled atmosphere testing, demand for helium gas ...

Feb. 7, 2013

By Peak Scientific Instruments Ltd

Zero Air and on-site gas generation

Zero Air is air which is filtered to ensure it only contains less than 0.1 parts per million (PPM) of total hydrocarbons. Essentially a mixture of oxygen and nitrogen, zero air is required for laboratory applications which would be negatively affected by the presence of hydrocarbons or small levels of sulphur or nitrous oxide. These gases can sometimes be present in air due to pollution. A ...

Apr. 10, 2018

By Peak Scientific Instruments Ltd

Helium shortage

Helium is well known as Helium that makes balloons and airships float and in its liquid form, Helium is used in a variety of applications including cooling for magnets in Magnetic Resonance Imaging (MRI) scanners, cooling infrared detectors, and as a superconductor coolant in the large hadron collider at CERN. Helium is distilled from natural gas deposits that have collected in the presence of ...

Apr. 20, 2015

By Peak Scientific Instruments Ltd

Could more sunshine make you less anxious?

It is no surprise that basking in sunshine can do a lot to improve your mood, but do you know about the link between vitamin D and mental health? Sunlight is the best source of vitamin D, which we need to enable our bodies to convert the calcium in our diets to strengthen our bones. In addition to maintaining good bone health, vitamin D has been linked with many other physiological functions in ...

Jul. 10, 2018

By Peak Scientific Instruments Ltd

Alternative solutions to Helium

Hydrogen generators offers a number of advantages to Helium for gas chromatography including lower cost, availability through electrolysis of water, and improved sampling speed. Helium is well known as Helium that makes balloons and airships float and in its liquid form, Helium is used in a variety of applications including cooling for magnets in Magnetic Resonance Imaging (MRI) scanners, ...

Apr. 17, 2015

By Peak Scientific Instruments Ltd

Gas chromatography - What are Columns?

Liquid and gas chromatography instruments wouldn't work without columns. Both liquid and gas chromatography analyze samples by separating them into their individual chemical components. A column, a long tube lined with specialized chemicals, is required for this process as it forms part of the instrument which performs the separation. When a sample makes its way through the tube, certain ...

Mar. 27, 2018

By Peak Scientific Instruments Ltd

A Promising Future for Butanol

With several beneficial attributes that make it a good blending agent in gasoline, butanol continues to hold promise for use as a biofuel. It is compatible with existing vehicles and refueling infrastructure. Low vapor pressure, high octane number and favorable distillation properties all add to the high blending value of butanol. Now, a new ASTM International standard will be used in isobutanol ...

Dec. 22, 2014

By ASTM International

Fuel dilution in engine crankcases: A fast field method for the workshop

What is fuel dilution and why is it a problem? Fuel dilution in oil is a condition caused by excess, unburned fuel mixing with engine oil in an engine crankcase. Hydrocarbon-based fuel, usually with a lower vapor pressure than the lubricant, has a thinning effect, lowering the oil viscosity. Oil film strength is reduced, increasing the cylinder liner and bearing wear. Reciprocating engines ...

Jan. 1, 2014

By AMETEK Spectro Scientific

Novel diesel-oil-degrading bacteria and fungi from the Ecuadorian Amazon rainforest

Isolating new diesel-oil-degrading microorganisms from crude-oil contaminated sites and evaluating their degradation capacities are vitally important in the remediation of oil-polluted environments and crude-oil exploitation. In this research, new hydrocarbon-degrading bacteria and fungi were isolated from the crude-oil contaminated soil of the oil-fields in the Amazon rainforest of north-east ...

May 18, 2015

By IWA Publishing

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 the analysis ...

Sep. 25, 2014

By Polymer Standards Service GmbH (PSS)

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 and twenty five years later, Dr. Rob Fitzgerald of the University of California, San Diego, (UC San Diego) School ...

May 2, 2016

By Waters Corporation

Blood Alcohol Determination with the Teledyne Tekmar HT3 and Young Lin YL6500 Gas Chromatograph

Introduction Police and forensic laboratories around the world routinely use headspace-gas chromatography for volatile components in biological fluids. One of the more common headspace analyses is the determination of blood alcohol in cases involving suspected DUI or OVI. The blood alcohol limit for some countries, like Korea and South Africa, is as low as 0.05%. This study evaluates Teledyne ...

Dec. 2, 2012

By Teledyne Tekmar

Rapid Field-Screening of Waste Oil/Solvent Drums with Horizontal ATR / Fast-Screening IR Spectroscopy

While the growth of technology and industry has given us a high standard of living, it has also given us a greater amount of waste products to deal with. A significant portion of the waste is either buried underground or stored in abandoned warehouses. Some of this waste material may be harmless and innocuous, and some may be quite hazardous; but all of it must be tested by some procedure to ...

Jan. 1, 2006

By Buck Scientific Inc

Residual Solvents Testing per ASTM F1884-04 with the Versa and HT3 Automated Headspace Sampler

Introduction Police and forensic laboratories around the world routinely use headspace-gas chromatography for volatile components in biological fluids. One of the more common headspace analyses is the determination of blood alcohol in cases involving suspected DUI or OVI. The blood alcohol limit for some countries, like Korea and South Africa, is as low as 0.05%. This study evaluates Teledyne ...

Nov. 26, 2012

By Teledyne Tekmar

Alternative Methods to RSK 175 Using Purge and Trap Concentration and Automated Headspace for the Analysis of Dissolved Gases in Drinking Water

Introduction Police and forensic laboratories around the world routinely use headspace-gas chromatography for volatile components in biological fluids. One of the more common headspace analyses is the determination of blood alcohol in cases involving suspected DUI or OVI. The blood alcohol limit for some countries, like Korea and South Africa, is as low as 0.05%. This study evaluates Teledyne ...

Nov. 7, 2012

By Teledyne Tekmar

Subsurface Gas Monitoring

So, what can be done to mitigate the potential drastic effects? Whether a landowner, developer or regulator the objective is identical; namely to ensure that any existing or proposed development remains or takes place safely. But because of the temporal or seasonal effects on ground gas migration, monitoring has to be undertaken over a potentially wide geographic area, lasting several ...

Jul. 11, 2018

By Ion Science Ltd.

Analysis of Organophosphorus and Organonitrogen herbicides in water using GC/MS with selected ion recording

Laboratories monitoring trace level pesticides and herbicides by gas chromatography/mass spectrometry (GC/MS) frequently utilize Selected Ion Recording (SIR) techniques to maximize analytical sensitivity for quantification. With analytical standards, precision is limited to a large extent only by the autosampler and other instrumental effects. However, real-world samples pose a greater challenge. ...

Oct. 28, 2011

By PerkinElmer, Inc.

Hydrogen cylinders are a potential safety risk in the laboratory

Can a laboratory which uses hydrogen gas cylinders ever be considered safe? We look at some of the safety concerns of having hydrogen cylinders in the lab in light of recent tragic events and how a hydrogen generator is a safer solution for providing hydrogen for laboratory applications. In December 2018 a hydrogen cylinder used at the prestigious Indian Institute of Science (IISc) exploded. The ...

Feb. 8, 2019

By Peak Scientific Instruments Ltd

Innovations in Site Characterization. Case Study: Dexsil L2000 PCB/Chloride Analyzer for Drum Surfaces

Executive Summary This case study describes a field analytical method that was used to measure PCB surficial contamination in empty drums to be cleaned by a new process. Approximately 7,000 empty 55-gallon drums that previously contained PCB-contaminated material had accumulated at the Department of Energy (DOE)’s East Tennessee Technology Park in Oak Ridge, TN. Because disposal of these drums ...

May 1, 1999

By US EPA - Environmental Protection Agency

Validation of a New Method for Screening Soil and Water for TCE Contamination

INTRODUCTION ASTM Method D 7203-06, Standard Test Method for Screening Trichloroethylene (TCE)-Contaminated Media Using a Heated Diode Sensor, (ASTM 2006) can be used to screen a sample of soil or water known to contain the halogenated volatile organic compound (HVOC) TCE. The method calls for measuring the TCE concentration in the headspace above the sample using a heated diode sensor ...

Mar. 1, 2007

By Western Research Institute (WRI)

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