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Why are narrow line sources advantageous in Atomic Absorption Spectroscopy?
Narrow line sources are advantageous due to the simple fact that they add selectivity to the technique. If a very narrow line of a specific compound is emitted, there is a good chance that only the element that you are trying to determine will absorb that line and, therefore, you will avoid an erroneous signal due to absorption of radiation by concomitants in the atomizer, such as atoms of other elements or molecules. With that, you can also use a low or medium resolution monochromator, which will have the sole function of isolating the line of interest from other lines emitted by the source. Therefore, instruments can be simpler and, consequently, cheaper. That is basically it... The state-of-the-art in atomic absorption spectrometry, however, consists of instruments that use continuum sources, where a single source emits radiation in all range usually used in AAS. But modifications in the instrument were necessary for that, such as the use of a high-resolution monochromator and a CCD detector. Hope that helps...
What is the difference between flame photometer and atomic absorption spectrometer?
AnswerThe difference is complexity. Either may be used for quantitative or absorbency purposes depending on the situation. Also of note, each may have a single or double beam integrated into it. For clarity: A spectrometer is a general term for an optical instrument. Spectrometric methods convey a large group of analytical methods based on molecular or atomic spectroscopy. Spectroscopic instruments will typically contain a stable source of radiant energy, a transparent veil for the sample or blank, a component to separate different wavelengths of light, a detector, and a readout/processor.Photometers are simpler in design compared to spectrophotometers. They are less expensive, more convenient, easier to maintain, and good for field work. Some photometers include: visible photometers, probe-type photometers, and general purpose photometers using adjustable filters.Spectrophotometers may have a few more mirrors, slits, a grating, and maybe a filter to top if off. Some examples include the popular Spectronic 20, Varian Cary 100, or even miniature fiber-optic spectrometers.
The absorption spectrum of argon has a line at 515 nm what is the energy of this line?
3.86 x 10-19 J
Is it true that a low density gas must be hot in order to produce an absorption line?
No, a low-density gas does not need to be hot in order to produce an absorption line. Absorption lines are formed when atoms in a gas absorb specific wavelengths of light. The presence of these lines does not depend on the temperature of the gas, but rather on the composition and energy levels of the atoms within the gas.
Why are atomic numbers radioactive?
It has to do with the line of stability. Isotopes are made of an extra neutron, making the atomic mass greater. If the number of protons and neutrons on the graph that has the line of stability fall anywhere that's not on the line, it is unstable.
What has the author D C Girvin written?
D. C Girvin has written: 'On-line Zeeman atomic absorption spectroscopy for mecury analysis in oil shale gases' -- subject(s): Mercury, Atomic absorption spectroscopy, Air, Analysis, Pollution
What is application of Electron Spin Resonance Spectroscopy?
Electron Spin Resonance (ESR) spectroscopy is used to study unpaired electrons in molecules, making it valuable for studying free radicals, transition metal complexes, and paramagnetic species. It provides information on the electronic structure, coordination environment, and chemical reactivity of these species, making it applicable in fields such as biochemistry, materials science, and environmental science.
What has the author Alastair Mark Reed written?
Alastair Mark Reed has written numerous fantasy novels, such as "Leaf and Flame" and "The Marches of the Mantii." He is known for creating intricate worlds with rich character development and engaging storylines. His works often explore themes of magic, power, and personal growth.
What is an absorption line?
An absorption line is a line which corresponds to the absorption of electromagnetic radiation at a specific wavelength.
What has the author P W J M Boumans written?
P. W. J. M. Boumans has written: 'Methodology, Instrumentation and Performance, Part 1, Inductively Coupled Plasma Emission Spectroscopy' 'Line coincidence tables for inductively coupled plasma atomic emission spectrometry' -- subject(s): Inductively coupled plasma atomic emission spectrometry, Plasma spectroscopy, Tables 'Atomic Spectroscopy in the Netherlands and Countries Historically Linked to the Netherlands (Spectrochimica Acta)'
Why are narrow line sources advantageous in Atomic Absorption Spectroscopy?
Narrow line sources are advantageous due to the simple fact that they add selectivity to the technique. If a very narrow line of a specific compound is emitted, there is a good chance that only the element that you are trying to determine will absorb that line and, therefore, you will avoid an erroneous signal due to absorption of radiation by concomitants in the atomizer, such as atoms of other elements or molecules. With that, you can also use a low or medium resolution monochromator, which will have the sole function of isolating the line of interest from other lines emitted by the source. Therefore, instruments can be simpler and, consequently, cheaper. That is basically it... The state-of-the-art in atomic absorption spectrometry, however, consists of instruments that use continuum sources, where a single source emits radiation in all range usually used in AAS. But modifications in the instrument were necessary for that, such as the use of a high-resolution monochromator and a CCD detector. Hope that helps...
What is the difference between Soft X-ray Absorption Spectroscopy and Hard X-ray Absorption Spectroscopy?
The 'soft' and 'hard' refer to the energy of the x-rays used to perform the spectroscopy. Hard x-rays are higher energy x-rays than soft x-rays. Where to draw the line for when an x-ray stops being 'hard' and becomes 'soft' is rather arbitrary but most people would agree I think that x-rays of energy ~ 1500 eV and less are 'soft' x-rays and above ~ 2500 eV are 'hard' x-rays.
Properties of atomic hydrogen?
Atomic hydrogen is the simplest form of hydrogen, consisting of a single proton and a single electron. It is highly reactive and has a strong absorption line in the ultraviolet spectrum. It is commonly used in studying atomic structure, as well as in the field of quantum mechanics.
Is an absorption spectrum also called a bright line spectrum?
No, an absorption spectrum and a bright line spectrum are not the same. An absorption spectrum is produced when light is absorbed by atoms or molecules, showing dark lines at specific wavelengths. On the other hand, a bright line spectrum is produced when atoms or molecules emit light at specific wavelengths, creating bright lines in the spectrum.
What is the difference between flame photometer and atomic absorption spectrometer?
AnswerThe difference is complexity. Either may be used for quantitative or absorbency purposes depending on the situation. Also of note, each may have a single or double beam integrated into it. For clarity: A spectrometer is a general term for an optical instrument. Spectrometric methods convey a large group of analytical methods based on molecular or atomic spectroscopy. Spectroscopic instruments will typically contain a stable source of radiant energy, a transparent veil for the sample or blank, a component to separate different wavelengths of light, a detector, and a readout/processor.Photometers are simpler in design compared to spectrophotometers. They are less expensive, more convenient, easier to maintain, and good for field work. Some photometers include: visible photometers, probe-type photometers, and general purpose photometers using adjustable filters.Spectrophotometers may have a few more mirrors, slits, a grating, and maybe a filter to top if off. Some examples include the popular Spectronic 20, Varian Cary 100, or even miniature fiber-optic spectrometers.
What is a dark line found in a spectrum is called?
A dark line found in a spectrum is called an absorption line. Absorption lines are created when atoms or molecules absorb specific wavelengths of light, resulting in dark lines in the spectrum where that light is missing.
What frequency corresponds to an Absorption line at 527?
5.69 × 1014 Hz
