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COLUMNS

• MOLECULAR SPECTROSCOPY WORKBENCH
  Resonance Enhancement of Raman Spectroscopy: Friend or Foe?
  The presence of electronic transitions in the visible part of the spectrum can provide enormous enhancement of Raman signals. Two biomolecules, carotenoids and hemes, illustrate the sensitivity of the technique. The downside is the nonlinearity of the signal.
  Fran Adar

• THE BASELINE
  Logger Rhythm
  A logarithm is a mathematical function that shows up in some forms of spectroscopy. Understanding what it is can give us a better appreciation for its function in our fields.
  David W. Ball

• CHEMOMETRICS
  Calibration Transfer, Part III: The Mathematical Aspects
  Calibration transfer is a series of techniques used to apply a single spectral database, and the calibration model developed using that database, to two or more instruments. Here, we review the mathematical approaches and issues related to the calibration transfer process.
  Jerome Workman, Jr. and Howard Mark

PEER-REVIEWED ARTICLE

• NIR Model Transfer Based on Wavelet Transform Algorithms
  A study is presented that uses an amine mixture as an example to discuss the combination of wavelet and piecewise direct standardization algorithms, which will improve the precision of near infrared (NIR) model transfer.
  Ju Xiang Wang, Zhi Na Xing, and Jun Qu

INTERVIEW

• Out of This World: The Next Generation of Medical Diagnosis
  Real-time air fingerprinting (RAFT) uses spectroscopic techniques to measure volatile organic compounds. Now, the University of Leicester in the UK is testing the use of RAFT for rapid and noninvasive diagnosis of illness in an emergency ward. Paul Monks, a professor in atmospheric chemistry and earth observation science, explains the approach.
  

NEWS

• NASLIBS Now Part of FACSS and SciX
  
• Market Profile: Used IR and NIR Spectroscopy Instrumentation
  

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COLUMNS

• CHEMOMETRICS IN SPECTROSCOPY
  Calibration Transfer, Part II: The Instrumentation Aspects
  Part II of this series surveys the issues related to instrument measurement differences associated with the calibration transfer problem.
  Jerome Workman, Jr. and Howard Mark

• ATOMIC PERSPECTIVES
  ICP-MS Analysis of Low-Level Beryllium in Urine
  A case study demonstrating the use of an ICP-MS system to detect low levels of beryllium in urine, using a simple but highly sensitive method
  Pierre-Emmanuel Riss

ARTICLES

• 2013 Review of Spectroscopic Instrumentation Presented at Pittcon
  Our annual review of products introduced at Pittcon, broken down into the following categories:
  • Accessories
  • Atomic Spectroscopy
  • Components
  • Fluorescence
  • Imaging
  • Mass Spectrometry
  • Mid-IR (FT-IR)
  • NIR
  • NMR
  • Raman
  • Software
  • Terahertz
  • UV–visible
  • X-ray
  Howard Mark

• Rapid Bacterial Diagnostics Via Surface-Enhanced Raman Microscopy
  SERS of bacterial cells can be a useful technique for clinical diagnostics, as illustrated by the analysis of a human urine sample spiked with urinary tract infection bacteria.
  W.R. Premasiri, A.F. Sauer-Budge, J.C. Lee, C.M. Klapperich, and L.D. Ziegler

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COLUMNS

• THE BASELINE
  Why Is the Sky Blue?
  A detailed look at what makes the sky appear blue in color, using Rayleigh scattering, Maxwell’s equations, and the Mie theory.
  James A. Lock and David W. Ball

• FOCUS ON QUALITY
  How Complete Are Your Data?
  A look at what the requirements are for “complete data” for laboratories working under the FDA GMP regulations. We also review the observations listed by inspectors on 483 forms from 2006 to 2012, to assess the common mistakes companies make.
  R.D. McDowall

• LASER AND OPTICS INTERFACE
  Quantum Cascade Lasers for Infrared Spectroscopy: Theory, State of the Art, and Applications
  Mid-infrared quantum cascade lasers, recently developed and commercialized, have unique properties that advance the analytical capabilities of IR spectroscopy in many ways. Bernhard Lendl of Vienna University of Technology in Austria explains these developments.
  Laura Bush

ARTICLES

• Rapid Quantitative Analysis of Puerarin Using Raman Spectroscopy
  A method that demonstrates Raman spectroscopy can be a rapid and reliable analytical method for the identification and quantitative determination of puerarin, a compound found in a traditional Chinese medicine.
  Xin Qi, Chang-chun Zeng, Han-ping Liu, and Song-hao Liu

• Multivariate Calibration for Spectral Analysis Based on P-Spline Signal Regression with Net Analyte Signal
  A P-spline signal regression (PSR) with net analyte signal (NAS) method is proposed to construct a quantitative calibration model with high precision.
  Xiaoyu Zhang, Qingbo Li, and Guangjun Zhang

DEPARTMENTS

• News Spectrum
  • Laser World of Photonics Preview
  • Market Profile: Portable Molecular Spectroscopy in Biopharma
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COLUMNS

• MASS SPECTROMETRY FORUM
  The Standard Definition of the Kilogram: A Grave Matter
  A close look at the distinct definitions of mass and current research and proposals for redefining the kilogram in terms of natural constants
  Kenneth L. Busch

• MOLECULAR SPECTROSCOPY WORKBENCH
  Raman Spectroscopy of Oil Shale
  Characterizing oil shale, particularly black shale consisting of kerogen, with Raman spectroscopy
  David Tuschel

• ATOMIC PERSPECTIVES
  William Henry Fox Talbot and the Foundations of Spectrochemical Analysis
  A historical account of Talbot’s contributions to spectroscopy
  Volker Thomsen

ARTICLES

• 2013 Salary Survey: The Future is Bright
  The results from Spectroscopy’s annual salary survey examines working conditions and more.
  Bethany Degg

• Spectroscopy Market Slows to a Crawl
  How the core spectroscopy techniques — molecular, atomic, and mass spectrometry — will fare in 2013 based on the results from last year’s data
  Lawrence S. Schmid

• Mass Spectrometry: The Premier Analytical Tool for DMP K Scientists in a Drug Discovery Environment
  An overview of applications of various types of MS systems in drug discovery efforts, including in vitro and in vivo screening assays
  Walter Korfmacher

• Sample Preparation–Free Micro ATR FT -IR Chemical Imaging of Polymers and Polymer Laminates
  A new method allows samples to be measured “as-is” with direct contact with the ATR crystal.
  Mustafa Kansiz

DEPARTMENTS

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COLUMNS

• MOLECULAR SPECTROSCOPY WORKBENCH
  Raman Microscopy Analysis of Molecular Orientation in Organic Fibers
  How the behavior of polarized Raman spectra can elucidate the microscopic structure of fibers
  Fran Adar

• CHEMOMETRICS IN SPECTROSCOPY
  Calibration Transfer
  A definition for calibration transfer is proposed, along with a method for evaluating it, based on recent discoveries about the nature of light absorbance in spectroscopic analysis.
  Howard Mark and Jerome Workman, Jr.

ARTICLES

• Polystyrene Film as a Standard for Testing FT-IR Spectrometers
  Polystyrene film is useful for routine checking of FT-IR spectrometer performance, but variations in film thickness and scattering can cause large variations in the results.
  R.A. Hoult, B. Perston, and R.A. Spragg

• Terahertz Spectrometry and Reflectometry: A New Frontier for Noninvasive Picoscale
  Investigations Terahertz spectrosopy is suitable for interrogating molecular motions that are not easily visible with other methods, providing an opportunity to discover critical molecular signatures.
  Anis Rahman

• Speciation Analysis of Mercury in Sediments Using HPLC Hyphenated to Vapor Generation Atomic Fluorescence Spectrometry Following Microwave-Assisted Extraction
  This method is simpler than other approaches, and detection limits are comparable.
  Geng Leng, Li Feng, Shao-Bo Li, Ping Yang, and De-Zhong Dan

• Bill Fateley and Ellis Lippincott: Remembering the Men Behind the Awards
  Friends remember these icons for their achievements and for their friendship.
  Peter R. Griffiths, Jim Rydzak, and Bruce Chase

• SPIE Defense, Security, and Sensing 2013
  Megan Evans
  A preview of what you will find at this year’s conference in Baltimore, starting April 29

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COLUMNS

• MASS SPECTROMETRY FORUM
  Dynamic Gas Chromatography Meets Dynamic Mass Spectrometry
  When we think about the mass spectrum of a compound, we assume that various ideal conditions are met, but often, many of them are not fully met. Here, we explain many considerations one should take into account, particularly when using GC to introduce samples into a mass spectrometer.
  Kenneth L. Busch

• LASERS AND OPTICS INTERFACE
  Femtosecond Versus Nanosecond Laser Pulse Duration for Laser Ablation Chemical Analysis
  Although the choice of laser is still highly dependent on the application requirements, there are distinct fundamental effects attributed to the laser pulse duration that drive the ablation sampling process. Here, we explain the differences between nanosecond and femtosecond laser ablation.
  Richard E. Russo, Xianglei Mao, Jhanis J. Gonzalez, and Jong Yoo

ARTICLE

• Nebulizers for Inductively Coupled Plasma Spectroscopy
  To choose the right type of nebulizer for atomic spectroscopy methods that use inductively coupled plasmas, start by understanding how plasmas are formed and what nebulizers do.
  Gerhard Meyer

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  • Matthieu Baudelet Joins Spectroscopy’s Editorial Advisory Board
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