Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Safa Motlagh"'
Publikováno v:
Journal of the American Society for Mass Spectrometry. 32(4)
The incorporation of retention-time information into a fully rotatable and interactive three-dimensional (3D), "Kendrick-like" normalized mass map (NMM) using a single software platform is reported. Surprising discoveries were made about the elution
Autor:
Karl Shiqing, Wei, Ching, Stella, Kenneth R, Wehmeyer, Jeremy, Christman, Amy, Altemeier, Russell, Spruell, Rohan L, Wimalasena, Gina M, Fadayel, Raymond A, Reilman, Safa, Motlagh, Peter J, Stoffolano, Kathleen, Benzing, R Randall, Wickett
Publikováno v:
Journal of cosmetic science. 67(3)
The skin on the lower legs of 25 female subjects was evaluated first in the winter, and then again in the summer of the same subjects. Barrier function was determined by measuring transepidermal water loss (TEWL), and skin hydration and dryness were
Publikováno v:
Food Hydrocolloids. 20:848-854
Acacia gum is a ubiquitous water-soluble material that has been analyzed using a variety of techniques. The absence of a high-resolution technique for the separation of the components of the gum has been an impediment to its characterization. Two com
Publikováno v:
Studies in Conservation. 47:171-175
Gum arabic, also known as acacia gum, is an abundant natural product that has been used throughout history. It has been extensively used in the manufacture of eastern and western inks, watercolors and gouache as a binder, and in historic photographic
Autor:
John H. Moore, Safa Motlagh
Publikováno v:
The Analyst. 124:1065-1068
In most environments in which radicals occur, the precursor molecule is found in much higher concentrations than that of the radical. Mass-spectrometer detection of radicals is then essentially impossible because the mass-spectrometric signature of a
Autor:
John H. Moore, Safa Motlagh
Publikováno v:
The Journal of Chemical Physics. 109:432-438
Molecular and atomic radicals from electron-impact dissociation of methane and a variety of fluoroalkanes are detected mass spectometrically as organotellurides produced by the reaction of the radicals at the surface of a tellurium mirror. The radica
Autor:
Safa Motlagh, Janusz Pawliszyn
Publikováno v:
Analytica Chimica Acta. 284:265-273
The rapid sampling and concentration response of solid phase microextraction (SPME) facilitate the monitoring of organic analytes present in a flowing stream. It was determined that in addition to convection introduced by flow in the system, an effic
Publikováno v:
Journal of High Resolution Chromatography. 15:741-744
Solid Phase Micro Extraction (SPME) involves exposing a fused silica fiber coated with stationary phase to a contaminated water sample. The organic analytes become partitioned between the stationary phase and the water and when equilibrium is reached
Publikováno v:
Analytical Chemistry. 64:1187-1199
Mathematical descriptions of the absorption and desorption processes were developed and compared with experimental results for solid-phase microextraction (SPME) using poly(dimethylsiloxane)-coated fused silica optical fibers. Extraction times for be
Autor:
Safa Motlagh, David W. Potter, Catherine L. Arthur, Lisa M. Killam, Megan Lim, Janusz Pawliszyn
Publikováno v:
Environmental Science & Technology. 26:979-983
rn Solid-phase microextraction (SPME) is applied to the analysis of benzene, toluene, ethyl benzene, and xylenes in groundwater. The inexpensive SPME method reduced the sample preparation time by 3-7-fold when compared to purge and trap methods. The