Color Source for the First Argentinian Flags A
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This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. Article Cite This: ACS Omega 2019, 4, 11424−11432 http://pubs.acs.org/journal/acsodf Color Source for the First Argentinian Flags A. Lorena Picone, Rosana M. Romano, and Carlos O. Della Vedová * CEQUINOR (UNLP, CCT-CONICET La Plata, associated with CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 N° 1465, 1900 La Plata, Republicá Argentina ABSTRACT: In this work, a historical controversy of more than 200 years is settled by the study of the oldest preserved Argentinian flag. The results of the present work reinforce the hypothesis of a number of historians who consider it to be the first flag that was originally hoisted on February 27, 1812, on the banks of the ParanáRiver. The work consists of a study of the original textile. Through chemical analysis and implementation of different types of analyses, techniques, and spectroscopies such as UV−vis, UV−vis diffuse reflectance spectrosco- py, attenuated total reflectance Fourier transform infrared spectroscopy, scanning electron microscopy−energy-dispersive X-ray spectroscopy, and resonance Raman, the original characteristics of the flag of Macha were determined. The flag was colored with indigotin from Europe (from Isatis tinctoria) and made of silk; it is white, blue, and white in a horizontal arrangement. It was not treated with tin, and its blue color was subsequently adopted by the Central American Confederation and later by various states of Central America. According to related contemporaneous stories, its preservation was due to the watchfulness of the patriots. ■ INTRODUCTION currently located in the National Historical Museum of fl The oldest preserved Argentinian flag, which for many Argentina. Both of these ags, carried by Belgrano, were historians may be the first flag raised by its creator, Manuel preserved after the battles since they would have been JoséJoaquıń del Corazoń de Jesuś Belgrano y Gonzalez,́ on delivered for protection by Colonel Cornelio Zelaya, a soldier February 27, 1812, on the banks of the ParanáRiver, is who was under orders from Belgrano, to the parish priest of the ́ preserved in the House of Freedom “Casa de la Libertad” in Titiri church, Juan de Dios Aranıvar. According to the Sucre, Estado Plurinacional de Bolivia. The so-called Flag of historical records, there were signs that the result of the battle Macha is in this unique location guarded by the remains of would not be favorable to Belgrano’s army. In accordance with Doña Juana Azurduy de Padilla (Figure 1). This flag, the Flag the testimonies of prominent soldiers of this period, a flag from https://pubs.acs.org/doi/10.1021/acsomega.9b01412. captured by enemy hands had a negative connotation in several Downloaded by 213.174.99.133 at 12:36:32:682 on July 01, 2019 dimensions that reached finally its exhibition in a European museum.1 The environmental preservation of both banners was differentiated according to the different climatic conditions of the conservation sites, much more favorable to the city of Sucre. Our recent spectral-historical work linked the connection between the 1814 Governor of the Tucumań Province, General BernabéAraoz,́ with the creator of the Argentinian Flag, Manuel Belgrano.2 It was in a small place of the department of Burruyacu,́ in La Encrucijada, where Bernabé Araoz,́ who later ordered the construction of the blue and white ceremony flag of 1814 for the Temple of San Francisco Figure 1. Flag of Macha. House of Freedom, Casa de la Libertad, ́ 2 Sucre, Bolivia. in Tucuman, blue due to lapis lazuli pigment, convinced Belgrano, who was on his way to Cordobá after the legendary ̃ ́ ̃ of Macha, was found in the year 1883 in the vicinity of the Jujeno Exodus (Exodo Jujeno), to challenge the commands of town of Macha, in the church of Titiri by the village priest the central government of Buenos Aires and to face in ı́ Tucumań the once invincible Pıó Tristan.́ On September 24, Mart n Castro, and 2 years later, in 1885, his successor, the ́ parish priest Primo Arrieta, transferred this insignia to the city 1812, the so-called Battle of Tucuman took place, and after his of Sucre. A sister flag, called the Flag of Ayohuma, in reference to the battle of the same name in which the royalist army of Received: May 15, 2019 Joaquıń de la Pezuela defeated Belgrano’s army, was also found Accepted: June 20, 2019 in the same church under a painting of Santa Teresa. It is Published: July 1, 2019 © 2019 American Chemical Society 11424 DOI: 10.1021/acsomega.9b01412 ACS Omega 2019, 4, 11424−11432 ACS Omega Article victory, Manuel Belgrano pushed the royalist army by directing With these objectives in mind, we used chemical methods, its troops in a northward direction toward the city of Salta.3 techniques, and those forms of spectroscopy that fall within The resonance of this achievement was notorious. The this discipline whose name can be amalgamated in the spectral- government of Buenos Aires, the First Triumvirate, resigned historical topic, a remarkable tool to settle historical and, for instance, the flux of the oriental population was discussions with the central intervention of one of the reversed. In October 1811, another exceptional event was branches of science, namely, spectroscopy. recorded after the armistice was promulgated between the Buenos Aires government and the royalist Viceroy of ■ RESULTS AND DISCUSSION Montevideo, Francisco de Elıo.́ That was when the entire To begin analyzing the questions raised, data and the analysis population of Montevideo accompanied their leader, José of a piece of a sample corresponding to Macha’s flag are Gervasio de Artigas, to the province of Entre Rıos,́ currently presented. For this, a piece of the flag, a crisp, smooth, plain Argentina, to the place of Ayuı.́ This event is known as the interlaced fabric (Figure 2), was analyzed by attenuated total exodus of Montevideo or “la redota”,aRıó de la Plata word meaning defeat, “derrota”. Some historians estimate that the number of people involved in that event may have reached 50 000.4 The “redota” symbolized the unhappy feeling of the population toward the displacement of General Artigas, as ordered by the Government of Buenos Aires. This order originated his migration, but he was also accompanied by the entire population and his army. On February 13, 1813, and days before the battle of Salta, all of the soldiers of the Army of the North swore allegiance to the Figure 2. Images taken during the scanning electron microscopy− flag on the banks of the Pasaje River, and from that moment on energy-dispersive X-ray spectroscopy (SEM−EDX) experiment using called the River Juramento (jurar is the Spanish verb swear and the BSED mode with different amplifications of the colored region of Juramento means oath), and so, one by one sealed his the Flag of Macha. fl commitment to the ag with a kiss that today is again the fl center of our attention. re ectance Fourier transform infrared spectroscopy (ATR- In relation to our previous work that covered several FTIR) spectroscopy, as shown in Figure 3. Figure 2 shows an interesting questions to be continued, the current work focuses its objective on the determination of the dye that gave rise to this flag, which accompanied the beginning of the Argentine fatherland. There are dozens of publications, interviews, discussions, and conferences originated in the present subject that had as their central thesis the determination of the color of the Argentinian Flag, which, in historical terms, goes far beyond a mere discussion on coloration and goes back to issues already discussed by an eyewitness soldier of the Paso de los Andes of General San Martıń in 1817, General Geronimó Espejo.1 This is how we propose in the present work: (i) the determination of the composition of the base fabric on which the ensign was made; (ii) a study of the presence or absence of Sn salts that contribute additional weight to silk or that could act as a preservative; (iii) revealing the original color of the insignia will be one of the fundamental questions to be addressed; (iv) the origin of either the dye or the pigment used Figure 3. ATR-FTIR spectra of the colored region (blue trace), of the for the preparation of the Belgrano flag will also be studied. white region (black trace) of the Flag of Macha, and of a silk sample The facts thus determined would provide information (red trace). regarding the origin of the emblem, assuming the hypothesis that it may be the same flag raised for Belgrano the first time image of the colored part of the flag taken with different on the banks of the ParanáRiver on February 27, 1812. On the amplifications and measured experimentally with backscatter way to Alto Peru,́ Belgrano would have sworn allegiance to this electron detector (BSED). According to Figure 2, the right- flag on the Pasaje River, later known as the Juramento River; side part, the diameter of the fiber used reaches a value of (v) in relation to the coloration, a correlation of the color of approximately 12 μm in agreement with, for example, the the pennant with that of the flags of the Central American expected value for Bombyx mori silk. It should be noted that countries will be mentioned, whose fights for independence the cross section of this particular silk is approximately were supported by the French-Argentine corsair Hipolitó triangular.6 Bouchard in command of the frigate La Argentina, who under As already mentioned, Figure 3 shows the results of the the orders of the government of the United Provinces of the ATR-FTIR technique used to analyze the flag samples.