All News
Evaluating the Temperature Shift in Analytical Temperature Rising Elution Fractionation
May 22nd 2014This article presents a new method to evaluate the temperature shift observed in analytical temperature rising elution fractionation (ATREF). The evaluation is based on the dependence of the measured peak temperature as a function of heating rates. Application of the proposed method does not require any knowledge of the fluid circuit characteristics geometry and avoids the use of narrow preparative TREF standards. The results are found to be more accurate than the method that is usually applied.
HPLC 2014 Agilent Technologies Best Poster Award Winners
May 19th 2014The 41st International Symposium on High Performance Liquid Phase Separations and Related Techniques took place from 11?15 May 2014 in New Orleans, USA. One of the highlights of the conference was the poster presentation sessions, which were entered into a competition for the Agilent Technologies Best Poster Award.
HPLC–MS–MS Indicates Resistant Hypertension in Non-Adherent Patients
May 19th 2014A new study in the journal Heart suggests that high performance liquid chromatography tandem mass spectrometry (HPLC?MS?MS) could be performed as a standard screening tool to identify patients who do not take the anti-hypertensive medications as prescribed by their doctor. 1 The authors suggest that up to one in four patients is misdiagnosed as suffering with ?resistant hypertension?, when in fact the patient has not been taking their prescribed medications as advised.1
The LCGC Blog: GC Inlet Maintenance...have you really heard it all before?
May 15th 2014Many troubleshooting investigations in chromatography often don?t lead to a single causal factor. Often, the reason for problems or lack of method robustness are related to many small ?contributory factors? and this is particularly true of the problems associated with sample introduction in capillary Gas Chromatography.
Increased Ozone Levels Linked to Oil and Gas Emissions
May 14th 2014A study published in the journal Environmental Science and Technology suggests a strong link between oil and gas emissions and the high production of ozone in the atmosphere during the winter months in the Uintah Basin in Utah, USA.1 Scientists from the Institute of Arctic and Alpine Research (INSTAAR) at the University of Colorado in the USA performed continuous measurements of ozone, methane, and a suite of nonmethane hydrocarbons (NMHCs) above the basin between January and February in 2012 and 2013.
Steroid Analysis Without Derivatization
May 14th 2014Steroid testing is commonly associated with sports doping testing to monitor athletes for performance-enhancing compounds, but it also important in the food industry for consumer safety. A new method using high-temperature liquid chromatography with photodiode detection and isotope ratio mass spectrometry (HT?LC?PDA?IRMS) that does not require sample derivatization and uses water as the eluent has been developed by scientists at the University of Duisberg-Essen in Essen, Germany.1
Solid-Phase Extraction and LC–MS Analysis of Benzodiazepines in Urine
May 12th 2014Benzodiazepines are extensively misused as a result of their hypnotic-sedative properties and relative availability, and they are often used in combination with other drugs, which can result in life-threatening conditions. This article presents a SPE and LC–MS method for the analysis of benzodiazepines in synthetic urine samples.
The LCGC Blog: Basics, Applications, and Innovations in Solid-Phase Extraction
May 8th 2014Solid-phase extraction (SPE) is a versatile and reliable technique that is often used for sample cleanup and concentration. Kevin Schug offers some insight about SPE basics and achieving successful extractions.
Peak Scientific Win Queen's Award for Enterprise: International Trade 2014
May 8th 2014Peak Scientific (Inchinnan, Scotland) has been awarded a 2014 Queen?s Award for Enterprise in International Trade decreed by Her Majesty The Queen of Great Britain, on the recommendation of the Prime Minister, David Cameron. The awards are announced each year on the Queen?s birthday, 21 April.
Steroid Analysis Without Derivatization
May 8th 2014Steroid testing is commonly associated with sports doping testing to monitor athletes for performance-enhancing compounds, but it also important in the food industry for consumer safety. A new method using high-temperature liquid chromatography with photodiode detection and isotope ratio mass spectrometry (HT?LC?PDA?IRMS) that does not require sample derivatization and uses water as the eluent has been developed by scientists at the University of Duisberg-Essen in Essen, Germany.1
