TY - JOUR
T1 - Study of mixed binding agent La-MOF and chelex-100 by diffusive gradient in thin films (DGT) devices
AU - Julianti, S.
AU - Saefumillah, A.
AU - Zulys, A.
AU - Agustino, null
N1 - Publisher Copyright:
© 2022 Published under licence by IOP Publishing Ltd.
PY - 2022/3/28
Y1 - 2022/3/28
N2 - The release of phosphor in the form of high phosphate from sediments to the aquatic system triggers a eutrophication process. It occurs due to the influence of the iron redox system where phosphate bound to iron(III) oxyhydroxide is reduced to iron(II) which will be released into aquatic systems under anoxic conditions. Therefore, developing an in-situ technique to measure the release of phosphor and iron simultaneously contributes to a better analysis. The method uses Lanthanum MOF, a porous material with a high surface area to bind labile phosphate species and Chelex-100 and bind iron(II) ions in Diffusive Gradient in Thin Films (DGT). The largest value of CDGT/Csolution for Iron(II) ion was 1.12, and for the labile phosphate species, the maximum value was 1.39 within 24 hours. Tests on variations in the pH solution obtained optimum results for Iron(II) ions, namely at pH 2.5-4.5. Meanwhile, the labile phosphate species produced the optimum result at a pH of 2.5-8.6. This study shows that the ability of the binding agent combination in the DGT tool to bind Iron(II) ions and labile phosphate species depends on the immersion (soaking) time and pH.
AB - The release of phosphor in the form of high phosphate from sediments to the aquatic system triggers a eutrophication process. It occurs due to the influence of the iron redox system where phosphate bound to iron(III) oxyhydroxide is reduced to iron(II) which will be released into aquatic systems under anoxic conditions. Therefore, developing an in-situ technique to measure the release of phosphor and iron simultaneously contributes to a better analysis. The method uses Lanthanum MOF, a porous material with a high surface area to bind labile phosphate species and Chelex-100 and bind iron(II) ions in Diffusive Gradient in Thin Films (DGT). The largest value of CDGT/Csolution for Iron(II) ion was 1.12, and for the labile phosphate species, the maximum value was 1.39 within 24 hours. Tests on variations in the pH solution obtained optimum results for Iron(II) ions, namely at pH 2.5-4.5. Meanwhile, the labile phosphate species produced the optimum result at a pH of 2.5-8.6. This study shows that the ability of the binding agent combination in the DGT tool to bind Iron(II) ions and labile phosphate species depends on the immersion (soaking) time and pH.
UR - http://www.scopus.com/inward/record.url?scp=85127945304&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2190/1/012005
DO - 10.1088/1742-6596/2190/1/012005
M3 - Conference article
AN - SCOPUS:85127945304
SN - 1742-6588
VL - 2190
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012005
T2 - 6th International Conference on Advanced Materials for Better Future, ICAMBF 2021
Y2 - 7 September 2021 through 8 September 2021
ER -