Integrated Flow-based System Displaying an In-line Mini Soil Column to Monitor Iron Species in Soils Leachates

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Mesquita, LS (Author) Other; Mesquita, RBR (Author) Other; Leite, A (Author) Other; Moniz, T (Author) Other; Maria Rangel (Author) ICBAS; Rangel, AOSS (Author) Other

Journal

Title: Communications in Soil Science and Plant Analysis

Vol. 51

Pages: 1089-1100

ISSN: 0010-3624

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00S-2SK

DOI: 10.1080/00103624.2020.1751186

Abstract (EN): Contamination of ground water as a consequence of soil leaching processes is an issue of major concern. In this context, a simulation of the soil leaching process was designed. A sequential injection (SI) method to monitor the soil leaching of iron complexes with in-line rain simulation for leachate production is described. The developed methodology comprises the SI determination of both iron(III) and 3-hydroxy-4-pyridinones iron(III) complexes, coupled to a mini soil column (mSC) for displaying in-line rain simulations. The described SI method enabled iron(III) determination within the range 2.0-35 mu mol L-1, with a detection limit of 0.42 mu mol L-1, and determination of iron(III) complexes in the range 1.0-45 mu mol L-1. It was successfully applied to leachates from laboratory scale soil columns (LSSC), with good precision for both iron(III) and iron complexes determinations: calculated relative standard deviation (RSD) of 5% and 6%, respectively. A step further in automation and miniaturization was attained with the incorporation of a mini soil column for the in-line leachate production. The system enabled the soil leachate production and assessment in less than 5 min, including determinations in triplicate.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12