A bilogarithmic hyperbolic cosine method for the evaluation of overlapping formation constants at varying (or fixed) ionic strength is devised in this paper and applied to data reported in the analytical literature, i.e. succinic acid system, Cu(II)-glycine system and Ag(I)-aminobutan -1-ol system. The method is based on the linearization of...
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December 19, 2017 (v1)PublicationUploaded on: March 27, 2023
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May 11, 2020 (v1)Publication
En este trabajo se incide en el tema de la adulteración de los alimentos en Gran Bretaña durante el siglo XVIII en la etapa previa a la creación de la "Society of Public Analysts". En la lucha contra el fraude alimentario y los aspectos que ello conlleva (analíticos, legales, educativos) radica el origen de esta asociación, que sigue a la...
Uploaded on: December 4, 2022 -
May 17, 2019 (v1)Publication
En la primera parte de esta contribución se han abordado la condiciones de contorno del nuevo método de blanqueo que idea Berthollet tras el descubrimiento del cloro (ácido muriático oxigenado) por Scheele. Esta segunda se centra en lo concerniente a la relevante figura del farmacéutico Descroizilles, y a las variadas facetas a las que se...
Uploaded on: March 27, 2023 -
May 11, 2020 (v1)Publication
Some aspects of the connexion between chemistry and pharmacy are considered under the framework of the Royal Academy of Sciences of France (1666-1793). Pharmacists have been active elements in the constitution, operation and management of important scientific societies. The contribution of apothecary and chemically formed doctors to chemistry...
Uploaded on: March 27, 2023 -
July 9, 2020 (v1)Publication
The antioxidant activity of anthocyanins in food is well known. Numerous antioxidant assays have been proposed to measure the capacity of anthocyanins to prevent the oxidation process that naturally occurs. Different solvents, temperatures, and pH levels are applied in each assay, and these factors should be taken into account in order to...
Uploaded on: March 25, 2023 -
May 11, 2020 (v1)Publication
Los halógenos han constituido un campo de batalla particular de los investigadores farmacéuticos. Cloro, bromo y iodo, se encuentran estrechamente relacionados con los métodos volumétricos, en sus comienzos. El color azul del complejo iodo-almidón que sirve como indicador para la detección de cantidades traza de iodo, es observado por Colin y...
Uploaded on: March 27, 2023 -
December 21, 2017 (v1)Publication
The study of the calibration of a series of compounds of environmental concern (six perfluoroalkyl compounds (perfluorooctane sulfonic acid and five perfluoroalkyl carboxylic acids), three preservatives (methyl-, ethyl- and propylparabens) and the brominated flame retardant hexabromocyclododecane) by LC-MS/MS has been carries out, with a view...
Uploaded on: December 4, 2022 -
May 11, 2020 (v1)Publication
Tras el trasfondo de los métodos iodométricos se procede a analizar la vida y la obra de dos grandes científicos húngaros, Than y Winkler, maestro y discípulo, responsables de la introducción de la química científica y de la educación farmacéutica en su país, que se movía en la órbita del imperio austro-húngaro, generando una escuela de...
Uploaded on: March 27, 2023 -
May 11, 2020 (v1)Publication
La contribución de Teophilus Redwood tanto a la Farmacopea Británica como a la Farmacia Práctica son perfiladas en esta parte del trabajo. El galés Redwood es uno de los héroes de la farmacia británica, y la Escuela de Farmacia de la Universidad de Cardiff lleva su nombre: Edificio Redwood. Se consideran los comienzos de la "Pharmaceutical...
Uploaded on: March 27, 2023 -
May 11, 2020 (v1)Publication
The most important contribution in the field of iodometry is due to Bunsen, who describes the determination of a wide variety of oxidizing substances by releasing iodine from iodide potassium, and assessing it with sulphurous acid. Bunsen had a predilection for quantitative work and was a genius in the design of applied science, although he...
Uploaded on: December 4, 2022 -
May 11, 2020 (v1)Publication
En este trabajo se pasa revista a los primeros textos publicados sobre análisis volumétrico aportando datos sobre la vida y obra de sus autores: Schwarz, Mohr, Poggiale, y Beckurts
Uploaded on: March 27, 2023 -
May 11, 2020 (v1)Publication
En este trabajo se pasa revista a la vida y obra de autores farmacéuticos y médicos no contemplados en contribuciones previas recientemente publicadas en estos Anales, detallando de manera especial sus aportaciones al análisis volumétrico. Las determinaciones de la materia orgánica en aguas debida al danés Forchhammer, de la dureza del agua...
Uploaded on: December 4, 2022 -
May 17, 2019 (v1)Publication
In this contribution the life and work of François-Antoine-Henry Descroizilles is reviewed. He is recognized as a multifaceted person, and as a skilled and wise chemist by eminent scientists of his time. Descroizilles developed his professional career as a chemistry teacher, apothecary, and industrial chemist, contributing firstly to give a...
Uploaded on: December 4, 2022 -
May 11, 2020 (v1)Publication
Este trabajo constituye una anotación sobre el método de Kjeldahl destacando su importancia, las etapas de que consta, incluyendo en la de valoración la determinación iodométrica del punto final, haciendo mención asimismo de un nuevo método de linearización. El nombre de Kjeldahl ha sido verbalizado, un honor raramente asociado con un químico.
Uploaded on: March 27, 2023 -
May 11, 2020 (v1)Publication
Un breve informe de la importancia e historia de dos reacciones relevantes, la oxidación de etanol con dicromato y la bromación de fenol se describe en este trabajo, en el que se perfilan las valoraciones volumétricas de etanol y fenol.
Uploaded on: December 4, 2022 -
May 24, 2022 (v1)Publication
Chiral pesticides can exert stereospecific toxicity in contaminated environmental compartments. Therefore, measuring pesticides at the enantiomeric level is essential to assess the risk posed to exposed organisms, including humans. In recent years, there has been rapid progress on the development and application of stereoselective liquid...
Uploaded on: December 4, 2022 -
May 11, 2020 (v1)Publication
En este trabajo se pasa revista a los aspectos de la vida y de la obra de Carl Remigius Fresenius, un eminente químico alemán del siglo XIX considerado como el padre de la Química Analítica. El trabajo se divide en varias secciones y hace hincapié: i) en la publicación de sus dos libros de texto sobre análisis cualitativo (1841) y cuantitativo...
Uploaded on: March 27, 2023 -
May 8, 2020 (v1)Publication
Se efectúa una aproximación al blanqueo de tejidos y al uso de los álcalis con carácter previo a considerar las contribuciones de Francis Home y William Lewis, autores de perfiles farmacéuticos. Se muestra la relevancia de sus trabajos y el valor de sus publicaciones. La química y la práctica van de la mano en el desarrollo de estos temas.
Uploaded on: March 27, 2023 -
January 19, 2023 (v1)Publication
Fluoroquinolones are antibiotics of significant environmental concern their extended use not only in human medicine but also in veterinary medicine and not only as therapeutic agents but also to promote livestock growth and in aquaculture. Some fluoroquinolones and their metabolites are chiral compounds. Therefore, for a proper environmental...
Uploaded on: March 3, 2023 -
July 2, 2018 (v1)Publication
Los contaminantes orgánicos perfluorados, presentes en numerosos objetos de nuestra vida cotidiana, forman parte de los llamados contaminantes emergentes, que empiezan a ser regulados por ley y cuyos efectos sobre los organismos y el medio ambiente aún no están bien evaluados. Estos compuestos se aplican en muchos productos industriales y...
Uploaded on: December 2, 2022 -
December 19, 2022 (v1)Publication
Microplastics (MPs) and other emerging pollutants exist together in the environment and their co-exposure represents a source of increasing concern as MPs have been reported to act as carriers of pollutants due to their high sorption capacity. The ingestion of contaminated MPs by organisms can enhance the desorption of pollutants, increasing...
Uploaded on: March 24, 2023 -
August 14, 2024 (v1)Publication
The presence of pharmaceuticals and personal care products (PPCPs) in the environment has aroused considerable interest in the last few years. However, the occurrence and fate of parent compounds and their metabolites and/or transformation products in soils have been scarcely evaluated to date. In this work, the dissipation kinetics of PPCPs,...
Uploaded on: August 15, 2024 -
October 11, 2024 (v1)Publication
Microplastics (MPs) and antibiotics are emerging pollutants widely found in aquatic environments, potentially causing environmental harm. MPs may act as carriers for antibiotics, affecting their environmental distribution. This study investigates the adsorption of four macrolide antibiotics and a metabolite onto two types of MPs: polyethylene...
Uploaded on: October 12, 2024