3 edition of scattering of positive lithium ions in mercury vapor ... found in the catalog.
scattering of positive lithium ions in mercury vapor ...
Irwin Walter Cox
|Statement||by Irwin Walter Cox ...|
|LC Classifications||QC702 .C65 1929|
|The Physical Object|
|Pagination||, 1426-1437 p.|
|Number of Pages||1437|
|LC Control Number||30011092|
Table in book: Some Ionic Compounds of Metal That Form Two Kinds of Positive Ions 1. copper (II) phosphide 2. ruthenium (IV) oxide 3. osmium (VIII) sulfide 4. . The saturated vapor pressure of mercury ismm Hg at K and the density of air at K is gL^
Heating of mercury, or of compounds of mercury that may decompose when heated, should be carried out with adequate ventilation in order to minimize exposure to mercury vapor. The most toxic forms of mercury are its organic compounds, such as dimethylmercury and methylmercury. Mercury can cause both chronic and acute : group E. Mercury Analyzers. Application and Principle of Operation. Handheld mercury analyzers can be used for compliance sampling and for source and leak detection. These instruments measure airborne mercury vapor by drawing an air sample over a gold film. The mercury adsorbed onto the gold surface changes the resistance of current flow.
Mercury is a chemical element with the symbol Hg and atomic number It is commonly known as quicksilver and was formerly named hydrargyrum (/ h aɪ ˈ d r ɑːr dʒ ər ə m / hy-DRAR-jər-əm). A heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these Group: group ture of high velocity neutral atoms and positive ions which escaped neutralization. These ions are repelled by the top surface of the scattering chamber which acts as an ion mirror since it is at ground potential. Thus, the only high velocity particles entering the scattering chamber are neutral, accelerated gas molecules. 1.
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Abstract Mercury vapor was bombarded by Li + and K + ions and the resulting spectra photographed with a quartz spectrograph and the plates photometered to give an approximate intensity-velocity curve. Voltages used ranged from to volts. The results indicate that the velocity rather than the energy is the important factor to be considered in the mechanism of the collision process.
Mobility of Mercury Ions in Mercury Vapor. Physical Review(3A), AA DOI: /PhysRevA Grant J. Lockwood, Herbert F. Helbig, Edgar Everhart. Measurements of Resonant Electron Capture in He+ on He by: Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (K), or click on a page image below to browse page by by: 2.
A nonaqueous secondary cell consists of a negative lithium electrode and a positive bromine electrode. This combination is made possible by the use of an ultrafine, porous polyethylene separator. Optimized Spectral Power Distributions for Mercury Vapor Lamps.
Preliminary Results of an Ion Scattering Study of Phosphosilicate Glass Gettering. Scattering of Electrons in Ionized Gases 35 In the case of the ultimate electrons in an arc it seems probable that there is a kind of thermal equilibirum between the electrons and the radiation and excited atoms.
That is, the electrons lose as much energy to the radiation on the average, as they gain from it. The processes occurring in the mercury cold vapor technique are simple but they can be affected by numerous factors.
Ionic mercury in acidic solution will be reduced by stannous ions producing ground state atomic mercury. After equilibra-tion the mercury vapor is swept from the reaction vessel with air, nitrogen or argon.
The influence of the concentration of mercury vapor in argon on the kinetic characteristics, such as the diffusion and mobility coefficients and ion-ization frequency, is investigated. View Show. The coeffi- cient, A, is the ion slip factor.
When it is zero the mean velocity of the ions is equal to the mean velocity of the neutral atoms. _ As equation (37) is_writtenjt does not express /' as a function of E and B, as for example equation (34) did. and is, therefore, not parti- PROPERTIES OF MERCURY VAPOR cularly by: 1.
The small angular scattering of electrons is discussed in detail. Phenomena, similar to Langmuir's high speed electrons in mercury vapor, have been observed and the curves showing the energy transfer between primary electrons in H 2 and A are by: 7.
MVI mercury vapour detector Accurately detects mercury in just 3 seconds. The Mercury Vapour Indicator (MVI) is a revolutionary mercury detector, detecting mercury vapours in just 3 seconds. The instrument’s dual beam UV absorption technology means MVI does not saturate or need regenerating between readings – like traditional gold film detection methods – eliminating instrument downtime.
The number of positive lithium ions passing through a fixed distance was observed with different pressures of mercury vapor. The rate of absorption deduced was found to depend on the aperture of. The electron density and the electron temperature in a low-pressure argon mercury positive column are determined using Thomson scattering.
Special attention has been given to the stray light. The mercury content of the air in the individual rooms was quite varied: Depending on the results of the specimens it showed thousandth or hundredth of mg, i.e. only a small fraction of what the air under saturation with mercury vapor can accomodate.
— With large cathodes coated with barium oxide in low pressure mercury vapor, simultaneous measurements showed that the electron current density was independent of the cathode temperature and was from to times the ion current density, this ratio being independent of the intensity of ionization and of the gas pressure but varying slowly with the voltage drop in the cathode sheath, in.
A technique for determination of mercury is described; it is based on electrolytic reduction of Hg(II) ion on a graphite cathode, the trapping of mercury vapor and its volatilization into a quartz. Power rectifier and control tubes include mercury-vapor rectifiers, thyratrons, and ignitrons. These tubes employ the very high current-carrying capacity of gas discharge tubes with low power losses for rectification and control in high-power equipment.
The operation of tubes depends on temperature insofar as mercury-vapor tube voltage drop and. We report the results of a spectroscopic ellipsometry (SE) and surface plasmon resonance (SPR) study of mercury vapor adsorption on polycrystalline and () gold films.
We found that, when Hg adsorbs onto gold films, the change in the ellipsometric parameter delta (Δ) is proportional to the thickness of the adsorbed Hg layer (i.e., Drude approximation).Cited by: Acute Toxicity.
Rabbits exposed for 4 h to saturated vapors of mercury (27 mg/m 3) suffered severe poisoning of brain, colon, heart, liver, lungs, and kidneys (Ashe et al.
The rat oral LD 50 of HgCl 2 is mg/kg. Subacute Toxicity. Guinea pigs exposed 10 h/d for 4 d to mercury vapor at 6 mg/m 3 developed neurotic effects and hemorrhagic colitis. Mercury was stored in the kidneys. The selectivity of LixMoS2 for selected heavy-metal ions was Hg(II) > Pb(II) > Cd(II) > Zn(II).
Heating solid HgyMoS2 under vacuum at °C initiated an entropy-driven internal redox reaction which resulted in the deactivation of the extractant, producing essentially mercury-free MoS2 and mercury vapor.
Symptoms noted after acute oral exposure to inorganic mercury compounds include a metallic taste in the mouth, nausea, vomiting, and severe abdominal pain in humans. (1,2,7) The acute lethal dose for most inorganic mercury compounds for an adult is 1 to 4 grams (g) or 14 to 57 milligrams per kilogram body weight (mg/kg) for a kg person.
(1,7). Solubility of mercury in organic liquids Edwin Henry Klehr Iowa State University Follow this and additional works at: ment, geometry, back-scattering, self-absorption and self-5 scattering. The importance of correct glassware treatment and ment of the vapor pressures of binary liquid mixtures.
Mercury, one of the most prevalent toxic metals in the environment, remains a danger to human health and the environment .Atmospheric oxidation of mercury vapor to water-soluble Hg 2 + ions and its subsequent metabolism by aquatic microbes produces methyl mercury, a potent neurotoxin linked to many cognitive and motion disorders.
Long-term exposure to this metal leads to permanent Cited by: Many salts of sodium are highly water-soluble: sodium ions have been leached by the action of water from the Earth's minerals over eons, and thus sodium and chlorine are the most common dissolved elements by weight in the oceans.