P�sp�kszil�gy Radioactive Waste Treatment and Disposal Facility (RWTDF) is a typical near-surface engineered repository designated to store low- and intermediate-level wastes from various institutes, research facilities and hospitals in Hungary. Two automatic combined (14)C-tritium sampling units installed at the facility sample the air 2 m above surface. The one installed near the vaults ...

... Accession Number : ADD307278. Title : LOW-ABSORPTION GRATING BEAM SAMPLERS. Corporate Author : Personal ...

... Title : ULTRAVIOLET ABSORPTION BY NITRIC ACID VAPOUR-NATURE PHYSICAL SCIENCE, V238, NO85, P109. Corporate ...

... Title : AUTOIONIZATION EFFECTS IN ULTRAVIOLET ABSORPTION SPECTRA OF HOT GASES,. ... of atomic vapours (eg of the alkaline earths Ca-Ba ...

The analysis of the longwave radiation scheme revealed the special role of water vapour among the IR-absorbing and emitting gases in the atmosphere. This is obvious by the fact that water vapour absorption is computed in two terms, i.e. the line term and ...

Passive samplers are used for environmental and analytical purposes to measure dissolved nonionic organic contaminants (NOCs) by absorption from a contaminated medium into a clean phase, usually in the form of a synthetic organic film. Recently developed passive sampler techniqu...

... describing the changes in moisture content associated with isothermal vapour exchange by absorption processes, and the effects of precipitation and condensation of ... ...

Piotrowski, J. K. (1971).Brit. J. industr. Med.,28, 172-178. Evaluation of exposure to phenol: absorption of phenol vapour in the lungs and through the skin and excretion of phenol in urine. Volunteers were exposed to phenol vapour (5 to 25 mg/m³) by inhalation and through the skin, respectively, and the ...

This document reports on analytical work carried out in cooperation among three European laboratories. The purpose of this work was to carry out a first assessment on the performances of passive samplers for organic vapors when used in indoor air pollution monitoring and simultaneously to evaluate the interlaboratory agreement on low-concentration analysis of a variety of ...

A system for detecting analytes in air or aqueous systems includes a permeation absorption preconcentrator sampler for the analytes and analyte detectors. The preconcentrator has an inner fluid-permeable container into which a charge of analyte-sorbing li...

... Title : Infrared Absorption of Beta-SiC Particles Prepared by Chemical Vapour Deposition. Descriptive Note : Journal article,. ...

... Descriptors : *ATOMIC SPECTROSCOPY, *ABSORPTION SPECTRA, *SAMPLERS, AEROSOLS, SOLUTIONS(MIXTURES), SOLIDS, SLURRIES ...

Pulsed TIG (tungsten inert gas) welding is used to improve the stability and speed of arc welding, and to allow greater control over the heat input to the weld. The temperature and the radiation power density of the pulsed arc vary as a function of time, as does the distribution of metal vapour, and its effects on the arc. A self-consistent two-dimensional model of the arc and ...

The atmospheric differential absorption by water vapour between two CO2 laser transmission lines has been measured up to heights of 1.5 km with a groundbased sounder system. Water vapour profiles, some containing distinct layers, have been estimated from ...

The measurement of semi-volatile hydrocarbons in workplace air is complicated by their readiness to condense to form aerosols or adsorb on to surfaces. The diffusive sampling and analysis by thermal desorption of alkanes up to hexadecane was investigated with the aim of quantifying vapour from petroleum distillate fractions and possibly differentiating particles from ...

This document reports on analytical work carried out in cooperation among three European laboratories. The purpose of this work was to carry out a first assessment on the performances of passive samplers for organic vapors when used in indoor air pollutio...

We look at the operation of compression/absorption cycle machines in order to produce a high-temperature heat pump. The useful effect of the machine lies in the absorber during absorption of vapour with a high refrigerant content by the solution with a lo...

This report describes a proposed system for automating atomic absorption analysis. The system consists of two atomic absorption instruments and an automatic sampler that can be attached to either instrument. A computer program controls the sampling and gathers data. The program then uses the data to perform bookkeeping, data ...

evacuated from the housing. Data acquisition � processing of water vapor absorption signal Barometer PD2

... of the water vapour through the textile samples and its absorption bring additional heat and decrease the protective capacities of the textile fabrics. ...

... by gold amalgamation, and detection by Cold-Vapour Atomic Absorption Spectrophotometry (CVAAS) and is described in the user's ... ...

Fusion research and tritium removal facilities potentially handle large inventories of tritium gas (HT). If any HT is released into the workplace, a fraction may be converted to tritiated water vapour (HTO). A convenient method to determine the activity concentration of each species is necessary to assess the potential hazard since the radiological hazard of HTO is more than ...

Aerosols index (AI), which measures absorption of ultraviolet radiation by dust, ... The sample for each date shows where the aerosol index (AI) detected the ...

... zinc (Zn)) were analysed in mussel tissue using Atomic Absorption Spectrophotometry (Varian Spectraa-400). For each sample, 2�3 ... OMOE (2004). Mercury was analysed by cold vapour atomic absorption spect...

A theory of moisture absorption in clothing, with the associated effects of heat transfer, was developed based on the assumption that clothing can be regarded as a moisture buffering capacitor enclosed between heat and vapour resistances, and covered with...

A system is presented that controls and acquires data from a Perkin-Elmer 603 or similar atomic absorption spectrophotometer operating in the flame mode and equipped with a 200 place auto-sampler. The hardware consists of a PDP11 computer with minimum peripheral equipment and a s...

Stratospheric ozone was measured from a balloon utilizing an ultraviolet absorption cell. The ambient air was sampled by means of an aspirator attached to the output end of the optical cell. A nominal ozone distribution was obtained from 16 km to the floa...

We show that the near infrared solar absorption spectra recorded in the framework of the Total Carbon Column Observing Network (TCCON) can be used to derive the vertical distribution of tropospheric water vapour. The resolution of the TCCON spectra of 0.02 cm-1 is sufficient for retrieving lower and middle/upper tropospheric water ...

A sensor based on the quartz crystal microbalance (QCM) technique was developed for detection of a number of primary aliphatic alcohols such as ethanol, methanol, 1-propanol, and 2-propanol vapours. Detection was based on a sensitive and a thin film of polyaniline, emeraldine salt (ES), coated the QCM electrode. The frequency shifts (Delta f) of the QCM were increased due to ...

Because of the adverse effect of CO2 from fossil fuel combustion on the earth's ecosystems, the most cost-effective method for CO2 capture is an important area of research. The predominant process for CO2 capture currently employed by industry is chemical absorption in amine solutions. A dynamic model for the de-absorption process was developed with ...

The absorption and emission spectra of dense sodium vapour have been measured between 790 nm and 1000 nm. In the emission spectrum from the high-pressure sodium lamp we observed the characteristic continuum structure at 882 nm which we interpreted as a satellite band originating from the 1 3?+g-13?+u transition. The complementary ...

A new retrieval method has been developed to derive water vapour number density profiles from solar occultation measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY). This method is intentionally kept simple and based on a combination of an onion peeling approach with a modified DOAS (Differential Optical ...

A new retrieval method has been developed to derive water vapour number density profiles from solar occultation measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY). This method is intentionally kept simple and based on a combination of an onion peeling approach with a modified DOAS (Differential Optical ...

Topics relating to spectroscopic applications of a new generation of metal vapour lasers are discussed. These lasers are distinguished by a high efficiency, compact size, air cooling, and user friendliness. Practical results are given of an investigation of the Raman scattering of light in gallium phosphide, silicon, graphite, and diamond films directly during their growth, ...

A self-operated personal sampling technique called 'self assessment of exposure' (SAE) has been suggested as an easy method for collecting inhalation exposure data, as the workers themselves are performing the sampling. Employers and employees have raised the question of whether a different estimate of the air concentration is likely to be obtained depending on whether the ...

The absorption spectra of water vapour were studied in the range 9390-9450 cm-1 using an ICL-spectrometer based on a Nd-glass laser with a spectral resolution of 0.036 cm-1 and threshold sensitivity to absorption of 10-8 cm-1. A high temperature absorption cell was used to record the H2O spectra at temperatures of ...

Water vapour is the most important greenhouse gas and plays a key role in atmospheric chemistry and transport. Most of the water vapour is located in the troposphere where it significantly contributes to weather and climate. Because the tropopause acts as a cold trap, the water vapour density in the stratosphere is significantly lower ...

... tests. Descriptors : (*SAMPLERS, *PATENTS), (*BACTERIA, SAMPLERS), (*RADIOACTIVE WASTES, SAMPLERS). Subject ...

Electromagnetically induced absorption in cesium vapour causes an extremely strong anomalous dispersion, leading to the propagation of radiation at a low negative group velocity Vg. As a result, a resonance light pulse appears from the medium before than a nonresonance pulse. The advance time measured in the experiment corresponds to the group velocity Vg ...

In this work, performance enhancements of amplified spontaneous emission (ASE) from poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1, 4-phenylene vinylene] (MEH-PPV) have been achieved via solvent vapour treatment. Correlations between the morphology of the film and the optical performance of polymer-based ASE are investigated. The active layers are characterised by atomic force ...

Few observations have been made of atmospheric absorption across the far infra-red. Yet water vapour absorption in this spectral region may significantly effect climate. The impact of far infra-red absorption is assessed by calculating the spectral variation of the total and water vapour ...

... in Soil, Sediments and Vegetation by Cold Vapour-Atomic Absorption Spectrophotometry (CV-AAS) (E3059. Laboratory Services Branch, Quality Management ... ...

... direct heat and measured using cold vapour Hg atomic absorption spectrometry. Finally, Hg concentrations were converted to tissue MTLP concentration based on the molecular weight of Hg and the binding stoi...

The water vapour continuum absorption is an important component of molecular absorption of radiation in atmosphere. However, uncertainty in knowledge of the value of the continuum absorption at present can achieve 100% in different spectral regions leading to an error in flux calculation up to 3 5 W/m2 global mean. ...

A dynamic aerosol test system has been developed and used to evaluate two samplers for microbiological aerosols. Test aerosols (monodisperse Latex particles) were quantified by microscopic counting. A new method of analysis based on UV-absorption was also...

Grating samples for use as laser beam samplers were produced and tested for evaluation of various production methods and analytical solutions of grating diffraction. The grating samples were tested for scatter, absorptance, microscopic surface quality, sa...

Development of a technique and apparatus for determining the concentration of respirable quartz, kaolinite, and calcite directly on individual personal dust sampler filters using infrared absorption spectrometry is described. The sample filter is placed i...

Contents: Operating Cost Analysis for the Electric-Arc Furnace Dust Control Plants; A New Sampler for Measurements of the Microbiological Contamination of the Air; Reduction of the Sulfur Dioxide Emission from the Sulfuric Acid Double-Absorption Contact P...

OUR attention has been directed to a paper by M. M. Ponte on the selective absorption by excited mercury vapour (Comptes rendus, 187, 37-39, July 2, 1928) giving results of photometric measurements on the prominent lines in the arc spectrum of mercury. M. Ponte refers to a paper by us on the same subject (Proc. Roy. Soc., A, 100, p. 149; 1921), but does ...

The water vapour spectrum in the 1.25-1.65 �m region is systematically analysed to find the best absorption transitions for sensitive measurement of in-cylinder gas temperature over short paths in an internal combustion engine. The strategy to select the optimum wavelength regions and absorption line combinations is developed for the ...

These instructions describe how to use three BASIC language programs to process data from atomic absorption spectrophotometers operated in the flame mode. These programs will also control an automatic sampler if desired. The instructions cover loading the programs, responding to computer prompts, choosing among various options for processing the data, ...

The WAter vapour Lidar Experiment in Space (WALES) mission aims at providing water vapour profiles with high accuracy and vertical resolution through the troposphere and the lower stratosphere on a global scale using an instrument based on Differential Absorption Lidar (DIAL) observation technique, and mounted on an Earth orbiting ...

Several aspects of the properties of the keyhole and its relationship to the weld pool in laser keyhole welding are considered. The aspect of most immediate importance is the exchange of energy between the laser beam itself and the molten material of the weld pool. Many mechanisms are involved, but the two considered here are the process of direct absorption at the keyhole ...

Integrative passive sampling with devices such as semipermeable membrane devices generally relies on rigs for month-long static exposures in water. We evaluate here whether mobile exposures of passive samplers can provide reliable estimates of dissolved contaminant concentrations. Mobile exposures were obtained by towing samplers fastened to the end of a ...

The issues related to high-precision measurement of the absorption line profiles of water vapour and its isotopomers using the methods of diode laser spectroscopy in the near IR range aimed at the analysis and detection of greenhouse gases are considered. The absorption line shape of H216O is investigated as a function of pressure of ...

An algorithm has been developed that retrieves water vapour profiles in the upper troposphere and lower stratosphere from optical depth spectra obtained by the Measurements of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (MAESTRO) instrument onboard the SCISAT satellite as part of the Atmospheric Chemistry Experiment (ACE) mission. The ...

A NEW absorption band has been observed, with a Hilger E1 glass spectrograph, on the shorter wavelength side of the second member of the rubidium principal series, in the presence of neon, helium, hydrogen or nitrogen. The position of the band depends on the nature of the foreign gas admitted into the absorption tube, which was kept at around 250� C. A ...

An algorithm is developed to retrieve water vapour vertical profiles in the upper troposphere and lower stratosphere (UT/LS) from optical depth spectra obtained from Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (MAE- STRO) onboard the SCISAT satellite as part of the Atmospheric Chemistry Mission (ACE). ACE/MAESTRO is a ...