Applied Spectroscopy
SCOPUS (1970-2025)SCIE-ISI
0003-7028
1943-3530
Mỹ
Cơ quản chủ quản: SAGE Publications Inc.
Lĩnh vực:
InstrumentationSpectroscopy
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Các bài báo tiêu biểu
Standard Normal Variate Transformation and De-Trending of Near-Infrared Diffuse Reflectance Spectra
Tập 43 Số 5 - Trang 772-777 - 1989
Particle size, scatter, and multi-collinearity are long-standing problems
encountered in diffuse reflectance spectrometry. Multiplicative combinations of
these effects are the major factor inhibiting the interpretation of
near-infrared diffuse reflectance spectra. Sample particle size accounts for the
majority of the variance, while variance due to chemical composition is small.
Procedures are pre...
Generalized Two-Dimensional Correlation Method Applicable to Infrared, Raman, and other Types of Spectroscopy
Tập 47 Số 9 - Trang 1329-1336 - 1993
A two-dimensional (2D) correlation method generally applicable to various types
of spectroscopy, including IR and Raman spectroscopy, is introduced. In the
proposed 2D correlation scheme, an external perturbation is applied to a system
while being monitored by an electromagnetic probe. With the application of a
correlation analysis to spectral intensity fluctuations induced by the
perturbation, ne...
Linearization and Scatter-Correction for Near-Infrared Reflectance Spectra of Meat
Tập 39 Số 3 - Trang 491-500 - 1985
This paper is concerned with the quantitative analysis of multicomponent
mixtures by diffuse reflectance spectroscopy. Near-infrared reflectance (NIRR)
measurements are related to chemical composition but in a nonlinear way, and
light scatter distorts the data. Various response linearizations of reflectance
(R) are compared ( R with Saunderson correction for internal reflectance, log 1/
R, and Kub...
Interval Partial Least-Squares Regression (iPLS): A Comparative Chemometric Study with an Example from Near-Infrared Spectroscopy
Tập 54 Số 3 - Trang 413-419 - 2000
A new graphically oriented local modeling procedure called interval partial
least-squares ( iPLS) is presented for use on spectral data. The iPLS method is
compared to full-spectrum partial least-squares and the variable selection
methods principal variables (PV), forward stepwise selection (FSS), and
recursively weighted regression (RWR). The methods are tested on a near-infrared
(NIR) spectral d...
Fluorescence Intensity Calibration Using the Raman Scatter Peak of Water
Tập 63 Số 8 - Trang 936-940 - 2009
Fluorescence data of replicate samples obtained from different fluorescence
spectrometers or by the same spectrometer but with different instrument settings
can have great intensity differences. In order to compare such data an intensity
calibration must be applied. Here we explain a simple calibration method for
fluorescence intensity using only the integrated area of a water Raman peak. By
apply...
New Procedure for Quantitative Elemental Analysis by Laser-Induced Plasma Spectroscopy
Tập 53 Số 8 - Trang 960-964 - 1999
A new procedure, based on the laser-induced plasma spectroscopy (LIPS)
technique, is proposed for calibration-free quantitative elemental analysis of
materials. The method here presented, based on an algorithm developed and
patented by IFAM-CNR, allows the matrix effects to be overcome, yielding precise
and accurate quantitative results on elemental composition of materials without
use of calibrat...
Infrared Intensities of Liquids XX: The Intensity of the OH Stretching Band of Liquid Water Revisited, and the Best Current Values of the Optical Constants of H2O(l) at 25°C between 15,000 and 1 cm−1
Tập 50 Số 8 - Trang 1047-1057 - 1996
The previously reported nonreproducibility of the intensity of the OH stretching
band of liquid water has been explored. It was found that it can be eliminated
in measurements with the Circle® multiple ATR cell by ensuring that the ATR rod
is coaxial with the glass liquid holder. It was also found that normal
laboratory temperature variations of a few degrees change the intensity by ⩽∼1%
of the pe...
A Review of the Theory and Application of Coherent Anti-Stokes Raman Spectroscopy (CARS)
Tập 31 Số 4 - Trang 253-271 - 1977
Coherent anti-Stokes Raman spectroscopy (CARS) is a relatively new kind of Raman
spectroscopy which is based on a nonlinear conversion of two laser beams into a
coherent, laser-like Raman beam of high intensity in the anti-Stokes region. The
emission is often many orders of magnitude greater than normal Raman scattering
and, because of the coherent and anti-Stokes character of radiation, the metho...
Portable Spectroscopy
Tập 72 Số 12 - Trang 1701-1751 - 2018
Until very recently, handheld spectrometers were the domain of major analytical
and security instrument companies, with turnkey analyzers using spectroscopic
techniques from X-ray fluorescence (XRF) for elemental analysis (metals), to
Raman, mid-infrared, and near-infrared (NIR) for molecular analysis (mostly
organics). However, the past few years have seen rapid changes in this landscape
with the...