Question

Explain basic instrumentation for IR Spectrometry and its environmental  applications?

16 Apr 2023
Answer :
Word Count : 1188

Infrared (IR) spectrometry is a versatile analytical technique that is widely used for the analysis of a wide range of samples in various fields, including environmental science. IR spectrometry is based on the measurement of the absorption or transmission of infrared radiation by a sample. The technique is non-destructive, fast, and requires very little sample preparation, making it a popular choice for many applications. In this article, we will discuss the basic instrumentation used for IR spectrometry and its applications in environmental science.

Basic Instrumentation for IR Spectrometry:

The basic instrumentation for IR spectrometry consists of three components: a source of IR radiation, a sample holder, and a detector. In addition, an optical system is used to collect and direct the IR radiation to the sample and to measure the absorption or transmission of the radiation by the sample.

  1. Source of IR Radiation:

The source of IR radiation used in IR spectrometry is typically a blackbody radiator or a globar. A blackbody radiator is a material that emits IR radiation at all wavelengths. A globar is a heated rod made of silicon carbide that emits IR radiation in a narrow band of wavelengths. The choice of IR source depends on the type of analysis being performed.

  1. Sample Holder:

The sample holder is the device used to hold the sample in the path of the IR radiation. The sample holder must be transparent _____ ________ _________ _____ ___ _________ _______ ________ _______ _______.
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