The method of detection of water pollutants is based on the absorbance of
contaminants under UV-vision.
Mechanism of Fluorescence-Based Detection of Water Pollutants
This method detects the water pollutants by detecting the light which is emitted by
the contaminants after absorbance at a different wavelength (lower wavelength),
which are more significant than the primary wavelength, the flow diagram of the
overall mechanism of detection of water pollutants are given in Fig. 7.
This process detects an only specific number of molecules; this is a very
selective method for detection of water pollutants.
6.5 Colorimetric Detection of Water Pollutants
Various technique is available for the detection of chemical contaminant in the
water these technique include the inductively coupled plasma mass spectrometry,
atomic absorption, X-ray fluorescence spectrometry and electrochemical analysis
[39–42]. This technique gives accurate result for the presence of metal ions or other
chemical contaminants in water, but this technique is very costly and available in
only sophisticated lab hence it is challenging to handle this outside the lab or on the
site of determination of water contaminant, and it requires a highly skilled person to
handle this instrument and also it consumes more time.
Fig. 7 Overall mechanism of fluorescence-based detection of water contaminants [38]
Analytical Methods of Water Pollutants Detection
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