Word Count : 1109

---

Infrared (IR) spectrometry and mass spectrometry are two pivotal analytical techniques in environmental chemistry, each providing unique insights into the composition, structure, and quantity of chemical species in environmental samples. Both techniques rely on fundamental principles of molecular interaction with energy, allowing scientists to identify pollutants, study chemical transformations, and monitor environmental quality. IR spectrometry is based on the principle that molecules absorb infrared radiation at specific frequencies corresponding to the vibrations of chemical bonds. When a molecule is irradiated with IR light, certain wavelengths are absorbed, leading to vibrational transitions within the molecule. Each functional group in a molecule, such as C=O, O-H, N-H, or C-H, absorbs IR radiation at characteristic frequencies, producing a spectrum that acts as a molecular fingerprint. The absorption of energy occurs because the IR radiation induces changes in the dipole moment of bonds, and these absorptions are detected as peaks in an IR spectrum. This makes IR spectrometry particularly useful for identifying functional groups and elucidating molecular structures. The instrumentation of IR spectrometry typically includes an IR source, a sample holder, a monochromator or interferometer, and a detector. The IR source emits radiation in the mid-infrared region (approximately 4000–400 cm⁻¹), which passes through the sample. The sample may be in the form of a gas, liquid, or solid, often prepared as a thin film or _______ __________ _____ _____ _____ _______ _________ ___ ______.
______ ____ ______ ___ _____ _______ ____ __________.
_______ _______ _______ ____ _____.
___ __________ ______ ________ ____ _____ ____ ________ _________.
______ __________ _______ ________ _____ _______.
________ __________ _____ ___ __________ ___ ___ _________.
_______ ________ ____ ______ __________ ____ _________ __________.
________ ________ ____ ________ ____ __________ ___ ________ _______ _______ ____.
_______ ____ ____ ________ _______ ___ ________ _______ ___ _______ ________.
_____ ______ ______ _________ _____ _______.
___ _______ _________ _______ _________ ________ _____.
________ ____ _________ ______ ___ ____.
______ ___ ____ ___ ______ ______ ______.
___ ____ ___ _____ ___ _____ _____ ___.
__________ __________ _____ _____ ______ ____ __________ ________ _______.
________ ___ ___ _______ ______ __________ _________ ___ _____.
_____ ____ ___ ____ ___ ____ _______.
__________ ___ _________ _________ _____ ________ ______ ___ _________.
_________ _________ __________ ___ __________ _________ ____ ________ _________ _________ _______.
__________ ___ ____ ____ __________ ______ ___ _______ ____ _____ __________ ____.
___ ___ _______ _________ ___ _____ __________.
______ ___ ______ ________ ____ ________ _________ _______ _________ _____ _______ ___.
______ ________ ________ _______ ___ ______ ____ __________ _________.
_________ ________ ________ ___ ___ _________ _________ _________.
___ ____ _____ _______ _______ ____ _______ _______ ________ _______.
_____ ______ ___ ____ __________ ______ ________ ________ ___ ___.
___ _______ ________ _____ ____ ______ _______ ____ ______ ______ ______ ____.
_______ _________ _____ _________ _____ ________.
___ ______ _________ ______ ________.
____ ________ __________ ________ ___ __________ __________ ___.
____ _____ ________ ___ ______ __________ ____ __________.
_______ ___ _________ ___ ____ _____ ______ _______ ___ _______ ________.
____ _____ _____ ____ __________ ______.
__________ ______ ___ _______ ______ ____ ___ ____ ______ _________.
________ __________ __________ ______ ____ ___ __________ ______ _________ ___.
____ ___ ________ ________ ____ ____ ______ ___.
____ _______ _____ _________ _______.
_________ _____ _____ _____ ________ _______ _____ _________.
________ _____ ________ _________ __________ _________ ____.
______ _________ ________ _____ ______.
____ ___ _____ _______ _________ ______.
________ _____ ________ ________ ___.
_______ _________ ____ ________ _______ _________ ___ ____ _______ ____.
________ __________ ____ __________ ________ ________ __________ __________.
________ ____ _____ _________ __________ _______ ___ _____ ______ _______ __________ _________.
_____ ______ _____ _____ ___ ____.
_____ ________ _____ _____ __________ ___ ____.
_______ ________ ____ ___ _____ ___ _________ ________.
__________ _____ __________ __________ ________ _______ _________ _______ ___ ________.
_______ _________ ____ ________ ____ ___ ____ _________ ________.
______ _________ _____ ___ _______ _________ ________ ______ ___.
______ ___ ___ _____ _______ __________ ______ __________ __________.
_____ _______ ____ _________ _______ ______ _________ ________ _____ _______.
________ ________ _____ ______ ________ _____ _____.
______ _____ _______ ________ ___ ___ ________.
___ ___ _______ ________ _________ ______ ___ ___ ___ _______ ____ _____.
_________ _______ ___ ________ ________ ______ _________ ___ ____ ______.
________ _____ __________ ______ ____ ___ __________ ______ ______ _____.
__________ ___ ____ _______ ___ __________ __________ _________ ___ ____ __________ _______.
__________ _________ __________ ____ _____ ________.
___ ________ _______ ________ _________ ________ _______.
__________ _______ ___ _____ ___ _________ ________ __________ ____ _________ _______ _______.
______ _________ _________ _________ __________.
_________ _______ ____ ________ ____ _____ ______ __________ ________ ______ ______ ______.
_________ _________ ____ ________ ____ __________ ___ ___.
__________ _______ _________ __________ ___ __________ __________ ________ _____.
_____ _________ _______ _____ ______ ____.
___ __________ _______ ____ ______ ______ ________ ______ ____ ________.
____ _____ _____ ____ _____ ________ ________ _______ ______ ___.
_______ _________ ________ ________ _________ ___ _______ ___ ___ ____ _______.
________ ________ ______ _____ _____ _________ __________ _________.
____ ____ _________ _____ ______ ______ _________.
__________ ______ ___ ________ _________ ____ __________ _________.
_______ _______ ___ ____ _____ ________ __________.
_________ _________ ________ __________ __________ ________.
______ _____ ____ ____ __________.
____ _______ ___ ______ _________.
______ __________ ___ ______ _________.
________ __________ ________ ___ ___ ______ _________ ____ ______.
________ _________ _____ ______ ___ _________ __________ _______ _____ _____.
_______ _______ __________ ___ ___ _____ __________ _______ _______ _________ __________ ______.
________ ___ ______ _____ _______ __________ _________.
_________ _________ ______ ______ ________ _______ ________.
_______ ______ ____ _________ _________ ____ _______ _____ ________ __________.
____ ________ ________ ________ ________ _________ ____ ___ _____ ____.
________ __________ _____ ____ _____ ____ ____.
_________ ________ ___ ___ ___ __________ _____ ___ _____ ____ ___ ____.
____ __________ ____ _________ _________ ______ _______.
__________ _________ __________ ___ ________.
____ ____ ___ ________ _____ ____ ____ __________ __________ _____.
_________ ______ ____ _____ ______ ______ _______ ___ ______ __________ ______ _________.
_____ ___ _____ __________ _____ ________ _____ _________ __________.
______ ______ ________ ____ __________ _______ ______ _________ ______.
_____ ________ _________ _________ ________ ____ ___ ____.
_________ __________ ______ ______ __________ _________ ________ _____ _______ ________.
____ ___ ________ _________ _________ ____ ________ ____ ______ ____ _____ _________.
_____ __________ _____ ____ _____ ______ _______ _________ ____ __________ ____ _________.
_________ _______ ___ _____ ______ _________.
_______ __________ _________ ______ _______ _______ ___ _________ _______ ____.
_____ ____ ____ ____ ______ _____ _______.
______ ____ ______ ____ ________ ________ ______.
________ _________ _______ __________ _______ ________ ___ _________ _____.
_______ __________ ________ ________ ________ __________ _______ ________.
_________ ________ _______ _______ ___ ________.
________ ____ _____ _______ ______ ____ ________ _________ ______ ______ ______.
___.
Get Full Answer on WhatsApp