I. Trace Analysis of NO/NO2 Mixtures by Laser Photofragmentation/ Fragment Photoionization Spectrometry at Visible Wavelengths

1998 ◽  
Author(s):  
R. C. Sausa ◽  
J. B. Simeonsson
Keyword(s):  
Trace Analysis ◽  
Visible Wavelengths

Detection and Characterization of earth-like Planets

1997 ◽  
Vol 161 ◽  
pp. 299-311 ◽  
Author(s):  
Jean Marie Mariotti ◽  
Alain Léger ◽  
Bertrand Mennesson ◽  
Marc Ollivier
Keyword(s):  
Direct Detection ◽  
Contrast Ratio ◽  
Angular Size ◽  
Physical Nature ◽  
Major Axis ◽  
Infrared Emission ◽  
Space Technology ◽  
Semi Major Axis ◽  
Earth Like Planets ◽  
Visible Wavelengths

AbstractIndirect methods of detection of exo-planets (by radial velocity, astrometry, occultations,...) have revealed recently the first cases of exo-planets, and will in the near future expand our knowledge of these systems. They will provide statistical informations on the dynamical parameters: semi-major axis, eccentricities, inclinations,... But the physical nature of these planets will remain mostly unknown. Only for the larger ones (exo-Jupiters), an estimate of the mass will be accessible. To characterize in more details Earth-like exo-planets, direct detection (i.e., direct observation of photons from the planet) is required. This is a much more challenging observational program. The exo-planets are extremely faint with respect to their star: the contrast ratio is about 10−10at visible wavelengths. Also the angular size of the apparent orbit is small, typically 0.1 second of arc. While the first point calls for observations in the infrared (where the contrast goes up to 10−7) and with a coronograph, the latter implies using an interferometer. Several space projects combining these techniques have been recently proposed. They aim at surveying a few hundreds of nearby single solar-like stars in search for Earth-like planets, and at performing a low resolution spectroscopic analysis of their infrared emission in order to reveal the presence in the atmosphere of the planet of CO H2O and O3. The latter is a good tracer of the presence of oxygen which could be, like on our Earth, released by biological activity. Although extremely ambitious, these projects could be realized using space technology either already available or in development for others missions. They could be built and launched during the first decades on the next century.

Application of Advanced Electrochemical Methods with Nanomaterial-based Electrodes as Powerful Tools for Trace Analysis of Drugs and Toxic Compounds

2019 ◽  
Vol 15 (2) ◽  
pp. 143-151 ◽  
Author(s):  
Parviz Norouzi ◽  
Bagher Larijani ◽  
Taher Alizadeh ◽  
Eslam Pourbasheer ◽  
Mostafa Aghazadeh ◽  
...  
Keyword(s):  
Trace Analysis ◽  
High Speed ◽  
Portable Devices ◽  
Great Opportunity ◽  
Toxic Compounds ◽  
High Speed Analysis ◽  
Recent Developments ◽  
Sensitivity And Selectivity ◽  
Trace Measurement ◽  
Health Application

Background: The new progress in electronic devices has provided a great opportunity for advancing electrochemical instruments by which we can more easily solve many problems of interest for trace analysis of compounds, with a high degree of accuracy, precision, sensitivity, and selectivity. On the other hand, in recent years, there is a significant growth in the application of nanomaterials for the construction of nanosensors due to enhanced chemical and physical properties arising from discrete modified nanomaterial-based electrodes or microelectrodes. Objective: Combination of the advanced electrochemical system and nanosensors make these devices very suitable for the high-speed analysis, as motioning and portable devices. This review will discuss the recent developments and achievements that have been reported for trace measurement of drugs and toxic compounds for environment, food and health application.

Mass Spectrometry for Trace Analysis of Explosives in Water

2012 ◽  
Vol 42 (3) ◽  
pp. 257-271 ◽  
Author(s):  
Koffi Badjagbo ◽  
Sébastien Sauvé
Keyword(s):  
Mass Spectrometry ◽  
Trace Analysis

Visual and algorithmic tooling for system trace analysis

2010 ◽  
Vol 44 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Wim De Pauw ◽  
Stephen Heisig
Keyword(s):  
Trace Analysis

scholarly journals Explosive vapour/particles detection using SERS substrates and a hand-held Raman detector

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26029-26036
Author(s):  
Vered Heleg-Shabtai ◽  
Amalia Zaltsman ◽  
Mali Sharon ◽  
Hagai Sharabi ◽  
Ido Nir ◽  
...  
Keyword(s):  
Trace Analysis ◽  
Raman Spectrometry ◽  
Raman Spectrometer ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We developed and optimized surface-enhanced Raman spectrometry (SERS) methods for trace analysis of explosive vapour and particles using a hand-held Raman spectrometer in the field.

Development and validation of a WD‐XRF method for quantitative trace analysis: Application in the food industry

2020 ◽  
Author(s):  
María Fernanda Gazulla ◽  
Marta Rodrigo ◽  
María Jesús Ventura ◽  
Mónica Orduña ◽  
Cristina Andreu
Keyword(s):  
Trace Analysis ◽  
Food Industry ◽  
Analysis Application ◽  
Development And Validation

scholarly journals The need for a multi-purpose, optical–NIR space facility after HST and JWST

2021 ◽  
Author(s):  
Knud Jahnke ◽  
Oliver Krause ◽  
Hans-Walter Rix ◽  
Frédéric Courbin ◽  
Adriano Fontana ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Hubble Space Telescope ◽  
Hubble Constant ◽  
White Paper ◽  
Space Mission ◽  
General Purpose ◽  
List Type ◽  
Space Telescope ◽  
Readiness Level ◽  
Visible Wavelengths

AbstractIn the early 2030s, after the end of operations for the epochal Hubble Space Telescope and the long-anticipated James Webb Space Telescope, astrophysics will lose access to a general purpose high-spatial resolution space observatory to cover the UV–optical–NIR wavelength range with a variety of imaging bandpasses and high-multiplexing mid-resolution spectroscopy. This will greatly impact astrophysical “discovery space” at visible wavelengths, in stark contrast to progress at most other wavelengths enabled by groundbreaking new facilities between 2010 and 2030. This capability gap will foreseeably limit progress in a number of fundamental research directions anticipated to be pressing in the 2030’s and beyond such as: What are the histories of star formation and cosmic element production in nearby galaxies? What can we learn about the nature of dark matter from dwarf galaxies? What is the local value of the Hubble Constant? A multi-purpose optical–NIR imaging and multiplexed spectroscopy Workhorse Camera (HWC) onboard NASA’s 4m-class Habitable Exoplanet Observatory (HabEx) space mission would provide access to these required data. HabEx is currently under study by NASA for the US Decadal Survey on Astronomy and Astrophysics 2020, and if selected would launch around 2035. Aside from its direct imaging of Earth-like exoplanets, it will have a general-observatory complement of instrumentation. The versatile Workhorse Camera will provide imaging and R$\sim $ ∼ 1000 spectroscopy from 370nm to 1800nm, diffraction-limited over the whole wavelength range, with simultaneous observations of the visible and NIR. Spectroscopic multiplexing will be achieved through microshutter arrays. All necessary HWC technology is already at Technology Readiness Level 5, hence technological risks are low. HWC has a rough-order-of-magnitude (ROM) cost of 300 M€, and could be European-funded within the cost envelope of an ESA S-class mission in the Voyage 2050 program, with matching funds by national funding agencies to construct HWC by a European instrument consortium. This White Paper is intended to put a European HabEx Workhorse Camera into ESA’s considerations. If ESA shares the wide interest and if HabEx were to be selected by NASA, there would be ample time to identify interested institutes for a European instrument consortium, including MPIA, to design, finance, and build the HabEx Workhorse Camera.

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