Solid Phase Extraction of Inorganic Mercury Using 5-Phenylazo-8-hydroxyquinoline and Determination by Cold Vapor Atomic Fluorescence Spectroscopy in Natural Water Samples

Table 8

Langmuir, Freundlich, and D-R isotherm constants of Hg.

Metal	Langmuir isotherms parameters			Freundlich isotherms parameters			D-R isotherms parameters
	𝑄𝑚 (mmol g^−1)	𝑏 (L mmol^−1)	𝑅^2	𝐾𝐹 (mmol g^−1)	𝑛	𝑅^2	𝑄𝑚 (mol g^−1)	𝐾 (mol^2 KJ^−2)	𝑅^2
Hg	0,0224	492,815	0,9604	0,0311	6,1463	0,9064	0.000039	1×10^−15	0,9446