.... http://www.separationsNOW.com/coi/cda/landing.cda?type=Feature&chId=3 http://www.separationsNOW.com/coi/cma/download.cma?imageType=RssLogo&contentType=Feature&siteId=2&chId=3 http://www.separationsnow.com/ http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26698&type=Feature&page=1 Hookah smoking produces a series of toxic furan-type compounds say researchers in Germany, although most of them are absorbed by the water reservoir, unlike some other known hookah hazards like carbon monoxide and carcinogens. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26678&type=Feature&page=1 A simple approach to the automated screening of four different columns on a single gas chromatography (GC) instrument is used for rapid chiral GC method development. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26611&type=Feature&page=1 The extent of volatile compound emissions by tomato plants under prolonged attack by herbivorous larvae is related to the population density and residence time of the larvae, say scientists in North America, information which might be useful in developing a pest monitoring system. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26587&type=Feature&page=1 Volatile nitrosamines originating from tobacco smoke have been determined for the first time in the dust from smoking and non-smoking homes, revealing an exposure risk from dust inhalation or ingestion. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26478&type=Feature&page=1 The change of volatile compounds in fresh fish meat during 3- to 4-d ice storage was investigated for several fishes using an electronic nose system and a gas chromatography-mass spectrometer with headspace solid-phase micro-extraction. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26459&type=Feature&page=1 The presence of mastic in ancient Egyptian embalming resins from mummies has been confirmed by scientists in Germany who were able to discount its use as incense during embalming, so that direct application to the body as a resin was the most likely source. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26429&type=Feature&page=1 The allergic reactions experienced by people after being tattooed might be caused by the undeclared impurities found in black tattoo ink, say German scientists, who used GC/MS to show that every ink they examined was contaminated. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26408&type=Feature&page=1 In a study of the effect of <em>trans</em>-10,<em>cis</em>-12 conjugated linoleic acid on oocyte maturation and lipid composition of cumulus oocyte complexes, the acid interfered in lipid metabolism, improving bovine oocyte competence to develop into higher quality embryos. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26351&type=Feature&page=1 Pyridine derivatives found in cigarette smoke have been detected by GC with a novel gas sensor based on iron-doped polypyrrole, say Iranian scientists, giving low detection limits. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26299&type=Feature&page=1 A microfabricated GC system has been designed for the on-site analysis of volatile organic compounds with the specific aim of measuring trichloroethylene inside buildings following contamination from underlying soil or water. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26269&type=Feature&page=1 This short overview examines the advancement of analytical techniques and how they can influence strategies and approaches for studying the volatile fractions of plants as well as the use of enantiomer GC and GC-mass spectometry separation using cyclodextrins as chiral selectors. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26223&type=Feature&page=1 Evolution of the volatile profile of canine training aids containing explosives has been studied by an SPME-GC/MS system devised by US government scientists, which should aid in the design of training aids that correctly mimic real explosives. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26183&type=Feature&page=1 Dual-purpose molecular sieves based on the same metallo-organic framework have been designed for the extraction of alkanes by SPME and their subsequent separation by GC, exemplified by the analysis of alkanes in diesel fuel and human serum. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26162&type=Feature&page=1 A chiral gas chromatographic method for the separation of compounds likely to be found in the EMDE synthesis of methylamphetamine was described, using fluorinated acid anhydrides as chemical derivatization reagents. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26082&type=Feature&page=1 The levels of naturally produced dioxins in kaolin ball clays from around the world have been measured by GC/MS to produce a global inventory, with US sources providing the greatest estimated release into the environment. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26036&type=Feature&page=1 Organically grown rice harvested in Korea is more contaminated by a major mycotoxin than conventionally grown rice, while other cereal crops are equally afflicted by related mycotoxins. The findings help to perpetuate the ongoing uncertainty about the safety of organic crops grown in the absence of fungicides. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=26019&type=Feature&page=1 A methodology is presented for the determination of dihydroxy fatty acids preserved in the bound phase of organic residues preserved in archaeological potsherds following the processing of commodities. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=25975&type=Feature&page=1 An ester emitted from decaying pigs has been identified as one of the principal attractants for a carrion beetle that feeds on decomposing carcasses, a discovery that might help forensic scientists to establish the human post-mortem interval. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=25933&type=Feature&page=1 Perfluorinated compounds have been measured in indoor air and dust of the homes of pregnant women in Canada, as part of a broader study into Chemicals, Health and Pregnancy (CHirP). The main exposure route for adults is inhalation but that for infants is ingestion of dust. http://www.separationsNOW.com/coi/cda/detail.cda?chId=3&id=25890&type=Feature&page=1 A GC/MS method developed for profiling tobacco leaves was applied to plants from Zimbabwe and Yunnan, China. It revealed differing levels of amino acids and saccharides between the two sources.