Aniano Jr. Asor | De La Salle University (original) (raw)

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Papers by Aniano Jr. Asor

Conservation Science in Cultural Heritage, 2016

Jurnal Kimia Sains dan Aplikasi, 2018

Malaysian Journal on Analytical Sciences, 2017

A calcium determination method for lime mortars in old church ruins is described. Two volumetric ... more A calcium determination method for lime mortars in old church ruins is described. Two volumetric analysis methods were employed: titration using EDTA solution, and with KMnO 4 solution. The binder fraction with sieve size (<0.075mm) was used for titration which is abundant in CaCO 3 as established by Fourier-Transform Infrared Spectroscopy (FTIR) technique. The mortar sample from Misamis Oriental yields a mean calcium concentration of 59.60% ± 4.64 and 60.48% ± 6.68 for EDTA and KMnO 4 , respectively, while the Metro Manila mortar sample is 73.54% ± 2.68 for EDTA and 73.33% ± 6.88 for KMnO 4. Two tailed t-test and F-test analysis confirm that there is no statistical difference between EDTA and KMnO 4 methods in determining the calcium content. Atomic Absorption Spectroscopy (AAS) technique validated the mean concentration values obtained from each method with less than 6.4% difference. The proposed titration methods are simple, rapid and sufficiently precise, without the use of expensive analytical instruments. This study is a good alternative method to easily determine the amount of calcium in historic lime mortars which is valuable in heritage conservation work and restoration of old structures in the Philippines.

De La Salle University Research Congress, 2019

Heritage is the totality of tangible and intangible inherited identity in a society. Different ch... more Heritage is the totality of tangible and intangible inherited identity in a society. Different churches are tangible ancestral heritage with its unique architectural framework and artistic elegance. Baclayon church as heritage is one of the earliest historical-cultural structures by the Spanish conquistadores with its unique baroque architectural design. Structural materials include adobe, coral stone, bricks and limestone with organic adhesive additive like eggs, oil and viscous plant extracts. In October 15, 2013 a 7.2 earthquake devastated the province of Bohol with Baclayon as one of the most affected. This research explores the Baclayon church: the historical-cultural testimony and mineralogical components of its mortar. The methodology used is a complementary study on narrative from archival data files and geomaterial characterization of different fragments. From the debris, samples with code BCB1, BCB2 and BCB3 are analyzed for its chemical components using Shimadzu FT-IR and ED-XRF. From this analysis, the major mineralogical bulk is calcite. Based from FT-IR spectra, the adsorption peaks are located in the calcite range point and in complement with the ED-XRF. The greater volume of calcite is 95.139 % (BCB1), 95.131 % (BCB2) and 94.190 % (BCB3). Aggregate materials like silicates are limited to a minimal proportion. Mineralogical constituents include strontium, silicon, potassium, iron, sulfur, zinc, copper, nickel, lead, phosphorus, magnesium and lutetium. Traces of inorganic barium and lithium as well as organic amine group related to protein compounds are identified using the Shimadzu spectral library as reference. The mineralogical composition indicates that the binder is a hydrated mortar containing lime particles. Lime mortar is a primary material for the conservation of historical-cultural structures which are significant for aeration and water absorption.

$Research paper thumbnail of Spanish Colonial Period Bricks from Churches in Laguna, Philippines: A Preliminary Chemical Characterisation Using X-ray Diffraction, Energy Dispersive X-ray Fluorescence and Fourier Transform Infrared$

Journal of Physical Science, 2021

To cite this article: Cayme, J. C. et al. (2021). Spanish colonial period bricks from churches in... more To cite this article: Cayme, J. C. et al. (2021). Spanish colonial period bricks from churches in Laguna, Philippines: A preliminary chemical characterisation using X-ray diffraction, energy dispersive X-ray fluorescence and Fourier transform infrared.

KIMIKA, 2023

Chemistry knowledge is fundamental in preserving and comprehending the tangible nature of museum ... more Chemistry knowledge is fundamental in preserving and comprehending the tangible nature of museum collections. Despite chemistry's importance in cultural heritage, a gap exists between the chemist's knowledge and the accepted competencies of museum workers. This paper describes an initial study on introducing museum professionals with no formal scientific training in basic chemical thinking and research. A two-hour online session was conceived, comprising two separate lectures emphasizing the concepts, instrumental techniques, and example of a case study of an application of chemical analysis on a local heritage material. An open discussion and exchange of ideas followed the lectures. Feedback from the participants was very positive, and they described the online course as informative and valuable for their museum work. The qualitative evaluations obtained from this paper can serve as baseline information for developing a more extensive e-course in the future.