dc.contributor | Universidade Estadual Paulista (UNESP) | |
dc.contributor | Istituto per la Scienza e Tecnologia dei Plasmi (ISTP) Sede di Bari | |
dc.date.accessioned | 2022-04-29T08:37:47Z | |
dc.date.accessioned | 2022-12-20T02:59:23Z | |
dc.date.available | 2022-04-29T08:37:47Z | |
dc.date.available | 2022-12-20T02:59:23Z | |
dc.date.created | 2022-04-29T08:37:47Z | |
dc.date.issued | 2021-12-01 | |
dc.identifier | Chemosensors, v. 9, n. 12, 2021. | |
dc.identifier | 2227-9040 | |
dc.identifier | http://hdl.handle.net/11449/230099 | |
dc.identifier | 10.3390/chemosensors9120337 | |
dc.identifier | 2-s2.0-85121589738 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5410233 | |
dc.description.abstract | Biochar-based fertilizers are a new attractive alternative to P supplementation for crops, as they can gradually release the nutrient, avoiding losses and improving soil quality. In this re-gard, the evaluation of the P amount in biochar-based fertilizers is extremely important for their quality control. Analytical techniques that require sample solubilization are not very efficient for this task, as biochar is difficult to solubilize. Laser-induced breakdown spectroscopy (LIBS) is a promising technique to respond to this demand, as it enables a direct analysis of solid samples, avoiding the complicated process of sample solubilization. In this work, a novel method based on spark discharge (SD) coupled to LIBS was evaluated for P determination in biochar-based fertilizers prepared from three different biomasses. To overcome calibration problems in LIBS analysis, a matrix-matching procedure accomplished by the addition of eucalyptus biochar to calibration standards was used in experiments. This procedure minimized matrix effects and allowed us to achieve a satisfactory accuracy even when applied to similar but different matrices. Furthermore, the developed method is simple, fast, direct, does not generate post-analysis residues and appears appropriate for the quality control of sustainable biochar-based fertilizers and other biochar products. | |
dc.language | eng | |
dc.relation | Chemosensors | |
dc.source | Scopus | |
dc.subject | Biochar-based fertilizers | |
dc.subject | Matrix matching | |
dc.subject | P analysis | |
dc.subject | SD-LIBS | |
dc.title | Phosphorous determination in biochar-based fertilizers by spark discharge-laser-induced breakdown spectroscopy | |
dc.type | Artículos de revistas | |