TY - JOUR
T1 - Field-deployable method for iron analysis using a simple preconcentration procedure and a 3D portable spectrophotometric system
AU - Vargas-Muñoz, M. A.
AU - Danchana, Kaewta
AU - Cerdà, Víctor
AU - Palacio, Edwin
N1 - Funding Information:
The authors acknowledge financial support from the Comunitat Autonoma de les Illes Balears through the Direcció General de Política Universitaria i Recerca with funds from the Tourist Stay Tax Law ( PRD2018/45 ). M.A.V-M. acknowledges the support from the Spanish Ministry of Science, Innovation and Universities (MCIU) for the pre-doctoral research fellowship ( FPU19/06082 ).
Funding Information:
The authors acknowledge financial support from the Comunitat Autonoma de les Illes Balears through the Direcci? General de Pol?tica Universitaria i Recerca with funds from the Tourist Stay Tax Law (PRD2018/45). M.A.V-M. acknowledges the support from the Spanish Ministry of Science, Innovation and Universities (MCIU) for the pre-doctoral research fellowship (FPU19/06082).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11
Y1 - 2021/11
N2 - In this paper, a field-deployable method for the spectrophotometric determination of iron after a simple preconcentration procedure in column is proposed. A 3D-printed portable system, housing a small spectrophotometer with a CCD detector and a LED as homemade light source is used for spectrophotometric detection. The entire system is powered through two USB outputs of a notebook. The Fe (III) preconcentration is based on a solid phase extraction with a column packed of Chelex-100 chelating resin. The Fe (III) eluted in the cuvette was reduced to Fe (II) and the iron concentration was determined using the o-phenanthroline method. Preconcentration factors between 9.7 and 98 were obtained. Under optimized conditions, linear calibration curves without and with preconcentration were constructed (R2 > 0.9992). Low LD (5 µg L−1) and LQ (10 µg L−1) were achieved, and good values for intra-day and inter-day precision were obtained (RSD ≤ 2.9% and RSD ≤ 9.6%, respectively). Recoveries of spiked iron in local tap water, sea water, well water, leachate and supernatant of anaerobic digester were ranged from 93 to 106%. The validation of method was also carried out by successfully analyzing a river water reference material SLRS-4.
AB - In this paper, a field-deployable method for the spectrophotometric determination of iron after a simple preconcentration procedure in column is proposed. A 3D-printed portable system, housing a small spectrophotometer with a CCD detector and a LED as homemade light source is used for spectrophotometric detection. The entire system is powered through two USB outputs of a notebook. The Fe (III) preconcentration is based on a solid phase extraction with a column packed of Chelex-100 chelating resin. The Fe (III) eluted in the cuvette was reduced to Fe (II) and the iron concentration was determined using the o-phenanthroline method. Preconcentration factors between 9.7 and 98 were obtained. Under optimized conditions, linear calibration curves without and with preconcentration were constructed (R2 > 0.9992). Low LD (5 µg L−1) and LQ (10 µg L−1) were achieved, and good values for intra-day and inter-day precision were obtained (RSD ≤ 2.9% and RSD ≤ 9.6%, respectively). Recoveries of spiked iron in local tap water, sea water, well water, leachate and supernatant of anaerobic digester were ranged from 93 to 106%. The validation of method was also carried out by successfully analyzing a river water reference material SLRS-4.
KW - 3D-printing
KW - Iron preconcentration
KW - Miniaturization
KW - Point-of-site
KW - Portable spectrophotometric system
KW - Water analysis
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U2 - 10.1016/j.microc.2021.106774
DO - 10.1016/j.microc.2021.106774
M3 - Article
AN - SCOPUS:85113800947
SN - 0026-265X
VL - 170
JO - Microchemical Journal
JF - Microchemical Journal
M1 - 106774
ER -