Results 31 to 40 of about 2,735,595 (303)
Speciation without chromatography: Part 2. Determination of tributyltin by chloride generation flow injection atomic absorption spectrometry [PDF]
, 2002 A procedure is described for the quantitation of tributyltin in aqueous samples and extracts based on its relatively high volatility in halide media, permitting vapour phase sampling from the headspace above such samples.Tributyltin chloride (TBT-C1) was
Christine Scriver +13 more
core +1 more source
Applied Sciences, 2023 The objectives of this paper will be to discuss the issues related to the determination of the limits of detection (LOD) in laser-induced breakdown spectroscopy (LIBS) analytical applications. The derivation of the commonly used ‘3-sigma over slope’ rule
Francesco Poggialini +6 more
doaj +1 more source
Hydrogel-Based Sensors for Ethanol Detection in Alcoholic Beverages
Sensors, 2019 A fast and reliable determination of the ethanol concentration is essential in the analysis of alcoholic beverages. However, different factors like pH value or salt concentration can influence the ethanol measurement.
Jan Erfkamp +2 more
doaj +1 more source
Quantum limits on detection sensitivity of a linear detector with feedback [PDF]
, 2016 We show that the detection sensitivity of a linear detector is lower bounded by some quantum limits. For the force detection, relevant for atomic force microscopes, the lower bound is given by the so-called ultimate quantum limit. For the displacement detection, relevant for detecting gravitational waves, a generalized lower bound is obtained.
arxiv +1 more source
Optical spin-wave detection beyond the diffraction limit [PDF]
, 2022 Spin waves are proposed as information carriers for next-generation computing devices because of their low power consumption. Moreover, their wave-like nature allows for novel computing paradigms. Conventional methods to detect spin waves are based either on electrical induction, limiting the downscaling and efficiency complicating eventual ...
arxiv +1 more source
Detection of amplitude modulation with squeezed light for sensitivity beyond the shot-noise limit [PDF]
, 1988 An improvement in precision beyond the limit set by the vacuum-state or zero-point fluctuations of the electromagnetic field is reported for the detection of amplitude modulation encoded on a weak signal beam. The improvement is achieved by employing the
Kimble, H. J., Wu, Ling-An, Xiao, Min
core +1 more source
Concentration Sensitivity of Nucleic Acid and Protein Molecule Detection Using Nanowire Biosensors
Biophysica, 2021 The concentration detection limit (DL) of biomacromolecules attainable using a nanowire detector has become a topical issue. A DL of 10−15 M is required to reveal oncological and infectious diseases at an early stage.
Yuri D. Ivanov +3 more
doaj +1 more source
, 2016 Quantum metrology exploits entangled states of particles to improve sensing precision beyond the limit achievable with uncorrelated particles. All previous methods required detection noise levels below this standard quantum limit to realize the benefits ...
Engelsen, N. J. +3 more
core +1 more source
Nukleonika, 2016 The determination of radium isotopes in drinking water by liquid scintillation technique requires some reagents that are used for separating radium from water samples. One of the main reagents is BaCl2·H2O.
Nguyen Chau +3 more
doaj +1 more source
Spectral Assessment of Organic Matter with Different Composition Using Reflectance Spectroscopy
Remote Sensing, 2021 Soil surveys are critical for maintaining sustainable use of natural resources while minimizing harmful impacts to the ecosystem. A key soil attribute for many environmental factors, such as CO2 budget, soil fertility and sustainability, is soil organic ...
Nicolas Francos +2 more
doaj +1 more source