Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Measuring Reaction Rates

Measuring Reaction Rates

Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical field in...

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...

IR Spectroscopy: Molecular Vibration Overview

IR Spectroscopy: Molecular Vibration Overview

When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...

Group Polarization

Group Polarization

Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Selectivity in the laser-induced photochemistry of iodine + acetylene in the gas phase.

Journal of the American Chemical Society·2012

Same author

An absorption detection approach for multiplexed capillary electrophoresis using a linear photodiode array.

Analytical chemistry·2011

Same author

People: therese m. Cotton (1939-1998).

Analytical chemistry·2011

Same author

Laser Vaporization/Ionization Interface for Capillary Electrophoresis-Time-of-Flight Mass Spectrometry.

Analytical chemistry·2011

Same author

Characterization of Nonbonded Poly(ethylene oxide) Coating for Capillary Electrophoresis via Continuous Monitoring of Electroosmotic Flow.

Analytical chemistry·2011

Same author

Two-dimensional spatial imaging based on acoustooptical deflectors.

Applied optics·2010

Search research articles

Related Experiment Video

Updated: Jun 28, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Improvements in polarization spectroscopy based on high-frequency modulation.

P L Christensen¹, E S Yeung

¹Ames Laboratory-USDOE and Department of Chemistry Iowa State University, Ames, IA 50011, U.S.A.

|January 1, 1989

Summary

This summary is machine-generated.

New polarization spectroscopy methods enhance trace elemental analysis. This technique achieves a detection limit of 2 ng/L for sodium, improving analytical sensitivity for various applications.

More Related Videos

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Published on: September 8, 2023

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Related Experiment Videos

Last Updated: Jun 28, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Published on: September 8, 2023

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Area of Science:

Analytical Chemistry
Spectroscopy
Atomic Spectroscopy

Background:

Trace elemental analysis is crucial for environmental monitoring, clinical diagnostics, and industrial quality control.
Conventional spectroscopic methods can face limitations in sensitivity and accuracy for detecting low analyte concentrations.

Purpose of the Study:

To report significant improvements in trace elemental analysis using polarization spectroscopy.
To enhance the limit of detection (LOD) and linearity of calibration curves for elemental quantification.

Main Methods:

Utilized higher frequency modulation (150 kHz) in polarization spectroscopy.
Optimized polarizer settings to achieve an off-extinction position, generating a dispersion-shaped signal.
Aspirated solutions into a conventional flame source for elemental atomization.

Main Results:

Achieved linear calibration curves for trace elemental analysis.
Obtained a limit of detection (signal-to-noise ratio = 2) of 2 ng/L for sodium.
Demonstrated enhanced sensitivity and reliability in elemental quantification.

Conclusions:

The developed polarization spectroscopy technique offers a substantial improvement for trace elemental analysis.
The method provides high sensitivity and linearity, making it suitable for quantifying trace elements like sodium at very low concentrations.