Publicaciones 2011-2020

@article{RN1007,
title = {Methodological problems in the analysis of the Raman spectra of the paper of some postage stamps from Crete},
author = {J.S. Gomez-Jeria and C. Segura and J.J. Carcamo-Vega},
url = {https://www.researchgate.net/publication/332547457_A_Raman_analysis_of_the_paper_of_some_postage_stamps_from_Crete},
issn = {2455-8990},
year = {2019},
date = {2019-01-06},
journal = {Chemistry Research Journal},
volume = {4},
pages = {58-67},
publisher = {Leon Publications},
abstract = {A Raman spectroscopy study has been carried out with 633 and 768 nm laser lines to characterize three Cretan postage stamps. The first corresponds was issued by the Russian Empire Administration area and the other two belong to the 1905 Revolutionary Issues. The resulting Raman spectra are not of enough quality allowing a direct interpretation. Possible corrections to these spectra are, for example, the removal of the background fluorescence, the baseline correction and/or smooth. These tools are available in several spectroscopy software packages. The central question is the reliability of the spectra obtained after one or more corrections are applied. In order to begin creating a common procedure to treat all samples we ascribed only those bands that coincide with the cellulose calculated Raman frequencies. The first results suggest that it is necessary to carry out more studies with a significant number of samples before proposing a common treatment for all Raman spectra of postage stamps presenting fluorescence.},
keywords = {baseline correction, cellulose, Cretan Postage stamps, Crete, fluorescence, raman spectroscopy, smooth., Vancouver Raman algorithm},
pubstate = {published},
tppubtype = {article}
}

@article{RN277,
title = {Adsorption of as (V) by Poly (N-Octyl-4-Vinylpyridinium) Bromide: Determination of as (V) by Direct Measurement of Fluorescence on the Solid Phase},
author = { J. Gonz\'{a}lez-Navarrete and M.I. Toral and A. Leiva and M. Yazdani-Pedram and H. Rios and X. Briones and M. Urz\'{u}a},
url = {/brokenurl#<Go to ISI>://WOS:000390510200015},
doi = {10.1016/j.reactfunctpolym.2016.10.011},
issn = {1381-5148},
year = {2016},
date = {2016-01-01},
journal = {Reactive & Functional Polymers},
volume = {109},
pages = {112-119},
publisher = {2016 Elsevier B.V.},
abstract = {Adsorption of As (V) by poly (N-octyl-4-vinylpyridinium) bromide (P4VPyC8), used as solid phase, was studied. Determination of As (V) was carried out by direct measurement of the fluorescence intensity on the solid phase. Adsorption variables were optimized for obtaining optimum values of pH and agitation time, where pH 9.0 and 60 min were established as optimum values. The adsorption of arsenic (V) was characterized by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. It was found that the fluorescence of the solid phase increases as the concentration of arsenic increases. Linearity was observed in the concentration range 6.80 to 90.0 mu g L-1. The detection limit for determination of As (V) by this method was 2.24 mu g L-1 and the relative standard deviation (RSD) was 1.72%. The amount of retained As (V) was 0.154 mg/g of solid phase. The determination of As (V) in a sample of tap water by this method was well compared with the value reported by an external certified laboratory. Therefore, the method of analysis proposed here could be used as a screening methodology for monitoring the fulfillment of the norm for arsenic concentration in tap water.},
keywords = {adsorption, arsenate, arsenic arsenic, atomic-absorption-spectrometry, carbon drinking-water, extraction, fluorescence, heavy-metal ions, nanotubes, performance phase, preconcentration, removal, samples, solid toxic water},
pubstate = {published},
tppubtype = {article}
}

@article{RN152,
title = {Raman Spectroscopy and X-Ray Fluorescence in Molecular Analysis of Yellow Blocks from the Archeological Site Playa Miller 7 (Northern Chile)},
author = { M. Sepulveda and S. Gutierrez and M. Campos-Vallette and E. Clavijo and P. Walter and J.J. Carcamo},
url = {/brokenurl#<Go to ISI>://WOS:000331238200008},
doi = {10.4067/S0717-97072013000300008},
issn = {0717-9707},
year = {2013},
date = {2013-01-01},
journal = {Journal of the Chilean Chemical Society},
volume = {58},
number = {3},
pages = {1836-1839},
abstract = {Yellow blocks from the archaeological site Playa Miller 7 (PLM7), on the coast of Atacama Desert in northern Chile, were analyzed by Raman spectroscopy and X-ray fluorescence (XRF) portable. Our results identify for the first time the use of K-jarosite and natrojarosite in prehispanic times (approx. 2500 year BP). In search of a possible source of supply for this mineral hydrothermal origin, our surveys were focused on Andean geothermal areas with identification, so far, from a single source in the region of Arica and Parinacota: Jurasi (JU), located at 4000 mamsl. Comparison of the Raman spectra between samples archaeological and Jurasi, allow us to infer that this hydrothermal source could be used as obtaining source of yellow pigment by prehispanic inhabitant of Formative period (3700-1500 years B.P.).},
keywords = {art, chile, diagnosis, fluorescence, identification, jarosite, micro-raman, northern pigments, raman spectra spectroscopy, x-ray},
pubstate = {published},
tppubtype = {article}
}