.... http://www.separationsNOW.com/coi/cda/landing.cda?type=Feature&chId=4 http://www.separationsNOW.com/coi/cma/download.cma?imageType=RssLogo&contentType=Feature&siteId=2&chId=4 http://www.separationsNOW.com/coi http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26680&type=Feature&page=1 A method for the determination of dimethyl fumarate in desiccant and antimould sachets, employed for protecting consumer products from humidity and mould, was based on a solid-liquid extraction followed by HPLC-UV analysis. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26681&type=Feature&page=1 Phosphate ester flame retardants have been measured in herring gull eggs by a fast and accurate LC/MS method which requires small sample sizes, an important aspect for wildlife screening. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26612&type=Feature&page=1 All chocolate candies purchased from a local market contain measurable levels of priority PAHs, say Indian scientists, including the highly carcinogenic benzo[a]pyrene, suggesting that more effective measures should be taken to prevent contamination during manufacture. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26479&type=Feature&page=1 A database was collated of published experimental logarithmic values for the relative retention factors measured using an immobilized artificial membrane column and high-performance liquid chromatography. It included 13 key experimental parameters and contained 1,686 values for 555 compounds. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26510&type=Feature&page=1 Three drugs have been determined simultaneously in plasma by HPLC with triple-wavelength diode array detection, to show that they have synergistic effects that increase their concentrations and reduce their plasma elimination rates. The procedure will be useful for studying drug-drug interactions in traditional Chinese medicines. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26466&type=Feature&page=1 The four major types of <em>E. coli</em> which cause diarrhoea in humans can be identified in food by denaturing HPLC following multiplex PCR, say Chinese scientists, to allow the rapid diagnosis of clinical cases. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26410&type=Feature&page=1 A novel method for the quantification of progesterone in human saliva using liquid chromatography-electrospray ionization-tandem mass spectrometry is expected to be an alternative to the blood monitoring in clinical examinations, because saliva collection is easy, non-invasive and repeatable. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26407&type=Feature&page=1 A group of meteorites which fell to Earth in the Sudanese desert contain amino acids that came from different extraterrestrial sources, even though they all originated from the same parent asteroid. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26350&type=Feature&page=1 Amino acids have been measured by HPLC with UV-vis detection following derivatisation with copper oxide in a simple post-column solid state reactor, say Polish scientists. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26301&type=Feature&page=1 An ion-pair LC-ESI-MS method was developed capable of analyzing various reported umami or umami-enhancing compounds, including glutamic acid and 5'-ribonucleotides. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26277&type=Feature&page=1 A novel HPLC system with a resonant Rayleigh scattering detector has been designed by scientists in China and illustrated for the measurement of aminoglycosides in human biological fluids. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26224&type=Feature&page=1 The performance of a post-column derivatisation device for the analysis of antioxidants in complex mixtures by HPLC with diode array detection has confirmed its suitability for the routine analysis and fingerprinting of antioxidants in the food and pharmaceutical industries. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26181&type=Feature&page=1 The validity of a spot urinary albumin:creatinine ratio measured before 20 weeks of gestation for predicting subsequent pre-eclampsia when urinary albumin is measured by high-performance liquid chromatography was studied. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26171&type=Feature&page=1 Adulteration of butter by cheaper plant oils can be detected by sterol analysis using GC/MS and tocopherols analysis by HPLC, say Polish scientists, who found that fatty acids are inefficient markers due to their variable relative compositions. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26083&type=Feature&page=1 A series of opioids used in drug replacement therapy for heroin adducts have been determined in plasma by HPLC with coulometric detection in the first procedure for simultaneously measuring methadone, naloxone, buprenophine and its primary metabolite. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26038&type=Feature&page=1 Liquid-liquid microextraction using a room-temperature ionic liquid followed by HPLC with UV detection was developed for analysing sudan dyes in red wine and fruit juice. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=26018&type=Feature&page=1 A study of the levels of nicotine and its metabolites in more than 2000 urine specimens from professional athletes by LC-tandem-MS suggests that athletes competing in certain sports are taking smokeless tobacco as a stimulant, say researchers from Switzerland. They propose that nicotine should be seriously considered for inclusion in the WADA prohibited list. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=25967&type=Feature&page=1 Bank notes belonging to 21 countries that were collected from currency exchange stands were contaminated with bisphenol A, say scientists in the USA, who proposed a possible route for its appearance and estimated the implications for human exposure via dermal absorption. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=25932&type=Feature&page=1 A new ionic-liquid monomer, 1-vinyl-3-octadecylimidazolium bromide, was prepared by ionic assembly. Its enhanced selectivity was explained by the highly oriented arrangement between the octadecylimidazolium chain and a rigid segment of methyl orange counteranions. http://www.separationsNOW.com/coi/cda/detail.cda?chId=4&id=25889&type=Feature&page=1 The fate of phenolic compounds and glycoalkaloids in the cotton leafworm after it has fed on the leaves of the tomato plant has been monitored by HPLC-DAD-MS/MS, which could lead to the engineering of better pest-resistant plants.