[ANAL-LEC-SEMIS-02-PT2] REPORTING: INFRARED SPECTROSCOPY

THIS FLASHCARDS IS ABOUT [ANAL] REPORTING QUESTIONS.

Infrared Spectroscopy

It is a technique that uses infrared radiation to study molecules and obtain information about their structure.

William Herschel

This scientist discovered infrared radiation in 1800 by measuring the temperature of sunlight colors using a prism.

1800

What year did William Herschel discovered the infrared radiation?

Prism

In 1800, what did William Herschel use to measure the temperature of sunlight colors?

Vibrational Spectroscopy

Another term for IR spectroscopy because it studies molecular vibrations.

Middle Infrared Region

The region of the IR spectrum where most analytical applications are performed.

Natural Frequency of Vibration

The vibration frequency of a molecule’s atoms and bonds that is characteristic to it.

IR Radiation Source

The part of the IR instrument that produces infrared radiation for analysis.

Sample Holder (Sample Compartment)

The component that holds the sample and allows IR radiation to pass through it.

• Monochromator or

• Interferometer

The instrument part that separates infrared radiation into different wavelengths.

Detector

The component that converts absorbed infrared radiation into an electrical signal.

Fourier Transform Infrared Spectroscopy (FTIR)

A modern technique introduced in the 1960s that improved the speed and sensitivity of IR spectroscopy.

1960s

What year was Fourier Transform Infrared Spectroscopy (FTIR) introduced?

William Herschel

He discovered infrared radiation in 1800 while studying the heating effect of sunlight.

Infrared Spectroscopy

The analytical technique used to identify chemical substances by measuring how molecules absorb infrared radiation.

Infrared Radiation

The invisible radiation located between visible light and microwave radiation in the electromagnetic spectrum.

IR Spectrum

The unique absorption pattern produced by molecules that acts like a molecular fingerprint.

Functional Groups

The specific groups of atoms within molecules that are commonly identified using IR spectroscopy.

Below Red

The literal meaning of the word “infrared”.

IR Radiation Source

The instrument component that produces infrared radiation.

Interferometer

The device in an FTIR instrument that measures all infrared wavelengths simultaneously.

Monochromator

The instrument component in traditional IR spectrometers that separates infrared radiation into individual wavelengths.

Detector

The component that converts infrared radiation passing through the sample into an electrical signal.

Infrared Spectrometry

An analytical technique that identifies and characterizes compounds by measuring the absorption of infrared radiation by molecular bonds.

Molecular Fingerprint

A unique absorption pattern by absorbing IR light at characteristic frequencies on each functional group.

1800

When was infrared radiation discovered?

William Herschel

Who discovered infrared radiation?

Beckman IR-1

A device developed during world war II that allowed scientists to begin systematically analyzing molecular structures using infrared radiation.

Fourier Transform Infrared Spectroscopy

FTIR stands for?

Perkin-Elmer Infracord

The device that made IR spectroscopy more affordable and accessible to research and industrial laboratories.

Prism and Thermometer

William Herschel discovered infrared radiation while studying sunlight using?

Michelson Interferometer

A device developed by Albert A. Michelson that later became the core component of modern FTIR spectrometers.

Albert A. Michelson

Who developed Michelson Interferometer?

Recorder/Computer

Part of the FTIR that displays the infrared spectrum and records the IR graph.