Sequential injection method for bi-parametric determination of iron and manganese in soil leachates

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Mesquita, RBR (Author) Other; Moniz, T (Author) Other; Nunes, MJM (Author) Other; Mesquita, LS (Author) Other; Maria Rangel (Author) ICBAS; Rangel, AOSS (Author) Other

Journal

Title: Analytical Methods

Vol. 14

Pages: 180-187

ISSN: 1759-9660

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00V-WD7

DOI: 10.1039/d1ay01932e

Abstract (EN): The aim of this work was to develop a sequential injection (SI) method for the determination of the micronutrients iron and manganese, in soil leachates, as a tool to assess potential groundwater contamination. The described sequential injection method was based on the reaction of iron with chelator MRB12, a greener alternative chromogenic reagent, and the reaction of manganese with zincon, within a single manifold. The developed SI method enabled the determination of iron in the range 0.10-1.00 mg L-1, and manganese in the range 0.25-2.5 mg L-1 with a limit of detection of 0.08 mg L-1 for iron and 0.24 mg L-1 for manganese. The determination of both parameters was made in 6 minutes, in triplicate. The application to monitor laboratory scale soil core columns (LSSCs), as a simulation of the soil leaching process, proved its efficiency to assess potential contamination of ground waters. Iron and manganese contents were effectively analysed in two different scenarios to mimic the leaching process with rainwater and fertilizer.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8