A Novel, Simple, and Reliable Spectrophotometric Determination of Total Hexavalent Chromium by Complexation with a New Reagent of Thiazole Linked to 2H-Chromen-2-One

Table 3

Figures of merit for the determination of Cr (VI)-TFZ complexation.

Parameter	Value
Absorption wavelength for complexation (nm)	370
Detection limit (ng mL^−1)	0.73
Quantification limit (ng mL^−1)	2.43
Correlation coefficient (R)	0.9994
Linear working range (ng mL^−1)	2–20000