نتایج جستجو برای: atomic absorption spectrometer
تعداد نتایج: 231408 فیلتر نتایج به سال:
A balloon-borne tunable diode laser absorption spectrometer capable of in situ measurement of the concentrations of several stratospheric trace gases simultaneously in the same parcel of air is described. Laboratory tests show present detection limits of 1.5 ppbv for NO and 0.5 ppbv for N02 under stratospheric conditions. This instrumentwas flown in July 1983 to make the first tunable diode las...
Objective: The present study aimed to investigate the phytochemical and heavy metals components of A. leiocarpus considering its applications in ethnomedicine.
 Material Method: were determined qualitatively quantitatively gravimetrically, while component identification was done using (Gas spectrometer-mass spectrometer (GC-MS) technique. Heavy quantified by atomic absorption spectrophotom...
Atomic Force Microscopy (AFM) techniques are used with oneor two-dimensional arrays of piezoresistive probes for parallel imaging. We present a newly designed AFM platform to drive these passivated piezoresistive cantilever arrays in air and liquid environments. Large area imaging in liquid as well as qualitative and quantitative analysis of biological cells are demonstrated by the means of pie...
Assessment of radiation and determination heavy metals in underground water was achieved with the use Atomic Absorption Spectrometer PG990 (AAS) at Chemistry Laboratory, Department Benue State University, Makurdi. Radiation Alert Meter used to assess level on respective study centers. The investigation showed average from borehole samples range 0.003μSv/hr 0.020μSv/hr below recommended value wh...
The atomic force microscope (AFM) and its derivative technologies have heralded a new era in science and technology. AFM and related instruments were primarily designed by physicists. In recent years there is a substantial presence of engineers with controls and systems background who are contributing to AFM related technologies. This article provides a tutorial on the control and systems appro...
UV-visible absorption spectroscopy is useful for probing the electronic and structural changes of protein active sites, and thus the on-line combination of X-ray diffraction and spectroscopic analysis is increasingly being applied. Herein, a novel absorption spectrometer was developed at SPring-8 BL26B2 with a nearly on-axis geometry between the X-ray and optical axes. A small prism mirror was ...
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