Abstract
A new analytical method employing di-2-pyridyl ketone salicyloylhydrazone (DPKSH) as a colorimetric chelating agent for simultaneous spectrophotometric determination of iron(II) and iron(III) in natural waters has been developed. Both of the complex ions show an absorbance maximum at 375 nm, with 4.21 × 104 and 1.26 × 104 l · mol−1 · cm−1 as the molar absorptivities, respectively, for Fe(II) and Fe(III). DPKSH complexes with Fe(II) show another absorbance maximum at 644 nm and a molar absorptivity equal to 1.27 × 104 l · mol−1 · cm−1. The detection limits are 0.09 μM for Fe(II) and 0.22 μM for Fe(II + III). Concentration approaches were done by using data from five analytical curves for Fe(II), Fe(III) and Fe(II + III) solutions and the use of the respective equations was evaluated in respect on the accurity. Analytical interference studies on some ions probably found in natural waters have also been carried out. This analytical method was used to determine Fe(II) and Fe(III) in natural waters and compared to the 2, 2′-bipyridyl and Atomic Absorption spectroscopy methods.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
