All News

Researchers at the Chinese Academy of Sciences and Tsingua University have developed an automated on-line HPLC-MS method allowing injection of a large volume of urine for the improvement of sensitivity using estrogens as analytes.

Researchers from the Nutrition and Bromatology Group, Analytical and Food Chemistry Department, and Faculty of Food Science and Technology at the University of Vigo (Ourense, Spain) have developed a GC-MS method for determining residues of 12 insecticides and 11 fungicides in leafy vegetables.

LCGC Europe Advertiser survey 2008

LCGC Europe Advertiser survey 2008

In 2008 Jasco (Easton, Maryland) celebrates its 50th anniversary as an analytical instrumentation company.

Millipore Inc. (Billerica, Massachusetts), manufacturer of sample preparation products for applications such as gas and liquid chromatography, mass spectrometry, environmental monitoring, food and beverage analysis, and pharmaceutical product analysis, announced a global Sustainability Initiative that outlines the company?s plans to reduce its environmental impacts and carbon footprint by 20% over the next five years.

Researchers from Utrecht University?s (Utrecht, The Netherlands) Department of Biomedical Analysis have described a capillary electrophoresis?time-of-flight mass spectrometry (CE?TOFMS) method for analyzing amino acids in the urine of patients with urinary tract infections.

Gilson, Inc. (Middleton, Wisconsin), has opened the Gilson Service Center of Excellence, designed for pipette repair, calibration, and certification for pipette customers in the U.S.

Researchers conducting clinical research trials of patients with bladder cancer have discovered a non-invasive way to detect the cancer by using HPLC/MS.

Researchers at the Virginia Tech (Blacksburg, Virginia) Department of Chemistry have used supercritical fluid extraction with methanol-modified carbon dioxide to separate polar lipid fractions from crude soybean lecithin.

The current issue (2008.1) of Restek?s e-newsletter, ?The Restek Buzz,? includes an article that summarizes the key advantages of thermal desorption versus solvent extraction in air monitoring applications.

Thermo Fisher Scientific (Waltham, Massachusetts) has acquired the Analytical Technologies and Environment Instrumentation divisions of Chemito Technologies Pvt. Ltd. (Mumbai, India).

The Pittsburgh Conference announces the launch of its 2009 website, www.pittcon.org, containing relevant information for conferees and exhibitors about Pittcon 2009 which will be in Chicago, Illinois, McCormick Place, March 8 -13, 2009.

College graduates receiving chemistry and chemical engineering degrees between July 2006 and June 2007 entered a still strong job market, the best since 2000.

Alexander Makarov, Thermo Fisher Scientific?s (Waltham, Massachusetts) director of global research for life sciences mass spectrometry (MS), received the 2008 ASMS Distinguished Contribution in Mass Spectrometry award from the American Society for Mass Spectrometry at the 56th ASMS Conference on Mass Spectrometry and Allied Topics.

Agilent Technologies Inc. (Palo, Alto, California) announced it has acquired substantially all of the assets of Taiwan-based Escort Instruments Corp., an established supplier of low-cost test and measurement instruments and a subsidiary of Unitech Printed Circuit Board Corp.

LCGC Europe reader survey 08

This technical note from Phenomenex discusses the use of mobile phase pH to control analyte ionization states (pH-LC) in RP-HPLC as a highly effective way to change selectivity. The ionized species of an analyte is shown to have higher polarity (less hydrophobicity) than the neutral species, which results in a loss of expected retention for that analyte. With the use of mobile phase pH in conjunction with a pH-stable column, powerful selectivity manipulation can be achieved.

In the last few decades, the novel functions of polysaccharides have provided a major impetus for increasing scientific attention. Among the most promising aspects are their immunomodulatory and antitumor effects, thickening agents and stabilizer effects.

Q: We currently use a glass filtration setup attached to a pump using 0.45-?m membrane filters. The flask contains a magnetic stirrer. As the solution passes the membrane filter, gas bubbles appear on its surface. As soon as the solution has completely passed through the filter the vacuum pump is turned off and the solution is poured from this setup into another bottle and stoppered until use (up to 3?4 days time). The HPLC equipment has inline degassers that are routinely used. Besides filtering is this setup degassing? To effectively degas a solution should the solution remain under vacuum for a longer period than the time it takes to filter? Should we be using this setup to filter?degas HPLC-grade solvents or commercial mobile phases?

Polymer Standards Service-USA Inc. has published an Application Note on GPC/SEC analysis of Mono-, Di-, Tri-acylglyceride's and Glycerol according to European Pharmacopoeia. A PSS SECcurity GPC1200 System with refractive index detector was used in this analysis. The use of a single PSS SDV gel, 5?m, 100?, 8x600 mm GPC column aids in maximizing separation efficiencies. The use of PSS WInGPC Unity software for data collection and processing allows for rapid analysis and reporting. Polymer Standards Service-USA Inc. Warwick, Rhode Island.

app notes

Sensory quality control of food and packaging products Marion Bonnefille. Analysis of macromolecular branching by triple detection GPC/SEC Paul Clarke Tips and tricks: How do I calibrate a GPC/SEC system? Daniela Held. News All the news for June 2008. Incognito With the changing nature of conferences and exhibitions, Incognito questions their true value today. Market trends & analysis Glenn Cudiamat provides a market profile of continuous flow analysis and discrete analysers.

This article investigates the different methods that can be used to compare the performance of liquid chromatography (LC) columns to assess the advantage of using them at high pressures and/or high temperatures. The main focus is on the kinetic plot method. This method, which is based on two simple equations, allows the user to transform the more common Van Deemter curve into a curve describing the ultimate separation speed as a function of the required plate number, or the required peak capacity or the required resolution.

Many HPLC analyses could be performed at lower expenditure. This could involve a combination of reducing the analysis time, reducing the resolution between critical peaks, and lowering the consumption of mobile phase. Successfully optimizing the method in such instances - as well as in situations where it is necessary to transfer the method to another laboratory that lacks the same selection of columns - can save the analyst time and money.

Add-on instrument control available; Software for mass spectrometry imaging; GC–MS reprocessing software; Software for multi-channel pipette calibration process

You may work in a chromatography laboratory to quality standards but do you work to Good Laboratory Practice? Probably not...

Separations Systems Inc. Honored at White House