Andreas Sigismund Marggraf (German:[ˈmaʀkɡʀaːf]; 3 March 1709 – 7 August 1782) was a German chemist from Berlin, then capital of the Margraviate of Brandenburg, and a pioneer of analytical chemistry. He isolated zinc in 1746 by heating calamine and carbon.[1] Though he was not the first to do so, Marggraf is credited with carefully describing the process and establishing its basic theory. In 1747, Marggraf announced his discovery of sugar in beets and devised a method using alcohol to extract it.[2] His student Franz Achard later devised an economical industrial method to extract the sugar in its pure form.
Andreas Sigismund Marggraf was the son of the pharmacist Henning Christian Marggraf (1680–1754), who owned a pharmacy in Berlin and lectured at the Collegium Medico-Chirurgicum (medical/surgical school). Marggraf came in contact with the pharmaceutical and medical business early and started studying at the medical school in 1725. He studied with Caspar Neumann in Berlin, visited pharmacies in other cities, including Frankfurt am Main and Strasbourg and attended lectures at the University of Halle. He worked in his father's pharmacy and focused his work on chemistry. In later life he helped to reorganize the Societät der Wissenschaften into the Akademie der Wissenschaften (Prussian Academy of Science) and became the director of the physics section in 1760.[3] In 1774 he had a stroke, and continued working at the laboratories of the Akademie until his retirement in 1781.[4]
Scientific workedit
Marggraf introduced several new methods into experimental chemistry. He used precipitation methods for analysis, such as the Prussian blue reaction for the detection of iron.[5] Marggraf's major work in inorganic chemistry included the improved production of phosphorus from urine[6] and the detection of alkali metal salts in plant ash and their identification by flame test.[7] Before his 1762 work, (al)chemists didn't systematically distinguish between potassium and sodium salts.[8]
Marggraf had isolated zinc in 1746 by heating a mixture of calamine and carbon in a closed vessel without copper. He was unaware that the same process had been developed (and patented) by William Champion in England around 1738–1740 and by Anton von Swab in Sweden around 1742. However, Marggraf described the process in great detail and established its basic theory, for which he is often credited with isolation of zinc.[13][14][15] This procedure became commercially practical by 1752.[16]
Referencesedit
^Marggraf (1746) "Experiences sur la maniere de tirer le Zinc de sa veritable miniere, c’est à dire, de la pierre calaminaire" [Experiments on a way of extracting zinc from its true mineral; i.e., the stone calamine], Histoire de l'Académie Royale des Sciences et Belles-Lettres de Berlin, pages 49-57.
^Marggraf (1747) "Experiences chimiques faites dans le dessein de tirer un veritable sucre de diverses plantes, qui croissent dans nos contrées" [Chemical experiments made with the intention of extracting real sugar from diverse plants that grow in our lands], Histoire de l'académie royale des sciences et belles-lettres de Berlin, pages 79-90.
^ abcEngel, Michael (1990), "Marggraf, Andreas Sigismund", Neue Deutsche Biographie (in German), vol. 16, Berlin: Duncker & Humblot, pp. 165–167
^Marggraf (1751) "Examen chymique de l'eau" [Chemical examination of water], Histoire de l'Académie Royale des Sciences et Belles-Lettres, pages 131-157; see especially pages 152-153.
^Andreæ Sigismundi Margraf (1743) "Nonnullae novae metodi Phosphorum solidum tam ex urina facilius conficiendi, quam etiam eundem prontissime et purissime ex phlogisto et singolari quodam ex urina separato sale componendi," [Some new methods of easily preparing solid phosphorus from urine, and making the same [i.e., phosphorus] as quickly and pure as possible from phlogiston and a particular salt extracted from urine] Miscellanea Berolinensia ad incrementum scientiarum, ex scriptis Societati Regiae Scientiarum exhibitis [Berlin miscellany for the increase of knowledge, from the published writings of the Royal Society of Science], vol. 7, pages 324-344. Reprinted (in part) in German as: Andreas Sigismund Marggraf (1785) "Verschiedene neue Arten, den Harnphosphorus leichter zu verfertigen, und ihn sehr geschwind aus Phlogiston und einem besondern Harnsalze zusammenzusetzen" [Various new ways to produce more easily phosphorus from urine, and to make it very quickly from phlogiston and a particular salt of urine], Crelle's Neues Chemisches Archiv, vol. 3, pages 300-303. Marggraf's new method of producing phosphorus was to add lead chloride ("Hornbley" or "horn lead") to concentrated urine. Lead phosphate would then precipitate. The precipitate was filtered and rinsed, and then mixed with carbon and heated in a retort. Phosphorus would then form in the retort and sublimate in the retort's receiver.
^Marggraf, Opuscules Chymiques de M. Margraf (Paris, France: Philippe Vincent, 1762), vol. 2, "XXV. Dissertation: Preuves qui démontrent que la partie alcaline séparée du sel de cuisine, est un sel alcali véritable, & non une terre alcaline" [Proofs that demonstrate that the alkaline part separated from cooking salt is a true alkaline salt and not an alkaline earth], pages 375-420; see especially page 386: Marggraf describes the distinguishing charactertistics of sodium nitrate and potassium nitrate, including the color of the flames when those salts burn:
Original text : La flamme du premier est jaune; celle du second, bleuâtre.
Translation : The flame of the first [sodium nitrate] is yellow; that of the second [potassium nitrate], bluish.
^Mellor, Joseph William (1922). Supplement to Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry: suppl. 3. K, Rb, Cs, Fr. Longmans, Green and Company.
^"Andreas Sigismund Marggraf | German chemist". Encyclopedia Britannica. Retrieved 29 March 2020.
^Friedrich, Christoph. "Begründer der Zuckerindustrie". Pharmazeutische Zeitung. Retrieved 2010-01-12.
^Wolff, G. (1953). "Franz Karl Achard, 1753-1821; a contribution of the cultural history of sugar". Medizinische Monatsschrift. 7 (4): 253–4. PMID 13086516.
^Habashi, Fathi. (PDF). International Zinc Association (IZA). Archived from the original (PDF) on 9 December 2008. Retrieved 2008-12-13.
^Weeks, Mary Elvira (1933). "III. Some Eighteenth-Century Metals". The Discovery of the Elements. Easton, PA: Journal of Chemical Education. p. 21. ISBN0-7661-3872-0.
^Heiserman, David L. (1992). "Element 30: Zinc". Exploring Chemical Elements and their Compounds. New York: TAB Books. p. 122. ISBN0-8306-3018-X.
andreas, sigismund, marggraf, german, ˈmaʀkɡʀaːf, march, 1709, august, 1782, german, chemist, from, berlin, then, capital, margraviate, brandenburg, pioneer, analytical, chemistry, isolated, zinc, 1746, heating, calamine, carbon, though, first, marggraf, credi. Andreas Sigismund Marggraf German ˈmaʀkɡʀaːf 3 March 1709 7 August 1782 was a German chemist from Berlin then capital of the Margraviate of Brandenburg and a pioneer of analytical chemistry He isolated zinc in 1746 by heating calamine and carbon 1 Though he was not the first to do so Marggraf is credited with carefully describing the process and establishing its basic theory In 1747 Marggraf announced his discovery of sugar in beets and devised a method using alcohol to extract it 2 His student Franz Achard later devised an economical industrial method to extract the sugar in its pure form Andreas Sigismund MarggrafEngraving of Marggraf circa 1770Born 1709 03 03 3 March 1709Berlin Margraviate of BrandenburgDied7 August 1782 1782 08 07 aged 73 Berlin Margraviate of BrandenburgNationalityGermanKnown forIsolating zincIsolating glucoseScientific careerNotable studentsFranz Karl Achard Contents 1 Life 2 Scientific work 2 1 Isolation of zinc 3 ReferencesLife editAndreas Sigismund Marggraf was the son of the pharmacist Henning Christian Marggraf 1680 1754 who owned a pharmacy in Berlin and lectured at the Collegium Medico Chirurgicum medical surgical school Marggraf came in contact with the pharmaceutical and medical business early and started studying at the medical school in 1725 He studied with Caspar Neumann in Berlin visited pharmacies in other cities including Frankfurt am Main and Strasbourg and attended lectures at the University of Halle He worked in his father s pharmacy and focused his work on chemistry In later life he helped to reorganize the Societat der Wissenschaften into the Akademie der Wissenschaften Prussian Academy of Science and became the director of the physics section in 1760 3 In 1774 he had a stroke and continued working at the laboratories of the Akademie until his retirement in 1781 4 Scientific work editMarggraf introduced several new methods into experimental chemistry He used precipitation methods for analysis such as the Prussian blue reaction for the detection of iron 5 Marggraf s major work in inorganic chemistry included the improved production of phosphorus from urine 6 and the detection of alkali metal salts in plant ash and their identification by flame test 7 Before his 1762 work al chemists didn t systematically distinguish between potassium and sodium salts 8 His extraction of sugar from beets which was then only available from sugarcane was the starting point for the sugar industry in Europe 9 and the modern sugar industry in the world 10 Although Marggraf recognized the economic impact of his discovery he did not pursue it Marggraf s student Franz Achard completed the work and developed an economic extraction method for sugar from sugar beet 4 11 12 Other students of Marggraf included Johann Gottlob Lehmann Franz Carl Achard and probably Valentin Rose the Elder and Martin Heinrich Klaproth 4 He was the first to isolate glucose from raisins in 1747 Isolation of zinc edit See also Zinc Isolation and William Champion metallurgist Marggraf had isolated zinc in 1746 by heating a mixture of calamine and carbon in a closed vessel without copper He was unaware that the same process had been developed and patented by William Champion in England around 1738 1740 and by Anton von Swab in Sweden around 1742 However Marggraf described the process in great detail and established its basic theory for which he is often credited with isolation of zinc 13 14 15 This procedure became commercially practical by 1752 16 References edit Marggraf 1746 Experiences sur la maniere de tirer le Zinc de sa veritable miniere c est a dire de la pierre calaminaire Experiments on a way of extracting zinc from its true mineral i e the stone calamine Histoire de l Academie Royale des Sciences et Belles Lettres de Berlin pages 49 57 Marggraf 1747 Experiences chimiques faites dans le dessein de tirer un veritable sucre de diverses plantes qui croissent dans nos contrees Chemical experiments made with the intention of extracting real sugar from diverse plants that grow in our lands Histoire de l academie royale des sciences et belles lettres de Berlin pages 79 90 Chisholm 1911 a b c Engel Michael 1990 Marggraf Andreas Sigismund Neue Deutsche Biographie in German vol 16 Berlin Duncker amp Humblot pp 165 167 Marggraf 1751 Examen chymique de l eau Chemical examination of water Histoire de l Academie Royale des Sciences et Belles Lettres pages 131 157 see especially pages 152 153 Andreae Sigismundi Margraf 1743 Nonnullae novae metodi Phosphorum solidum tam ex urina facilius conficiendi quam etiam eundem prontissime et purissime ex phlogisto et singolari quodam ex urina separato sale componendi Some new methods of easily preparing solid phosphorus from urine and making the same i e phosphorus as quickly and pure as possible from phlogiston and a particular salt extracted from urine Miscellanea Berolinensia ad incrementum scientiarum ex scriptis Societati Regiae Scientiarum exhibitis Berlin miscellany for the increase of knowledge from the published writings of the Royal Society of Science vol 7 pages 324 344 Reprinted in part in German as Andreas Sigismund Marggraf 1785 Verschiedene neue Arten den Harnphosphorus leichter zu verfertigen und ihn sehr geschwind aus Phlogiston und einem besondern Harnsalze zusammenzusetzen Various new ways to produce more easily phosphorus from urine and to make it very quickly from phlogiston and a particular salt of urine Crelle s Neues Chemisches Archiv vol 3 pages 300 303 Marggraf s new method of producing phosphorus was to add lead chloride Hornbley or horn lead to concentrated urine Lead phosphate would then precipitate The precipitate was filtered and rinsed and then mixed with carbon and heated in a retort Phosphorus would then form in the retort and sublimate in the retort s receiver Marggraf Opuscules Chymiques de M Margraf Paris France Philippe Vincent 1762 vol 2 XXV Dissertation Preuves qui demontrent que la partie alcaline separee du sel de cuisine est un sel alcali veritable amp non une terre alcaline Proofs that demonstrate that the alkaline part separated from cooking salt is a true alkaline salt and not an alkaline earth pages 375 420 see especially page 386 Marggraf describes the distinguishing charactertistics of sodium nitrate and potassium nitrate including the color of the flames when those salts burn Original text La flamme du premier est jaune celle du second bleuatre Translation The flame of the first sodium nitrate is yellow that of the second potassium nitrate bluish Mellor Joseph William 1922 Supplement to Mellor s Comprehensive Treatise on Inorganic and Theoretical Chemistry suppl 3 K Rb Cs Fr Longmans Green and Company Larousse Gastronomique Editions Larousse 13 October 2009 p 1152 ISBN 9780600620426 Andreas Sigismund Marggraf German chemist Encyclopedia Britannica Retrieved 29 March 2020 Friedrich Christoph Begrunder der Zuckerindustrie Pharmazeutische Zeitung Retrieved 2010 01 12 Wolff G 1953 Franz Karl Achard 1753 1821 a contribution of the cultural history of sugar Medizinische Monatsschrift 7 4 253 4 PMID 13086516 Gray Leon 2005 Zinc Marshall Cavendish p 9 ISBN 0 7614 1922 5 Habashi Fathi Discovering the 8th Metal PDF International Zinc Association IZA Archived from the original PDF on 9 December 2008 Retrieved 2008 12 13 Weeks Mary Elvira 1933 III Some Eighteenth Century Metals The Discovery of the Elements Easton PA Journal of Chemical Education p 21 ISBN 0 7661 3872 0 Heiserman David L 1992 Element 30 Zinc Exploring Chemical Elements and their Compounds New York TAB Books p 122 ISBN 0 8306 3018 X Chisholm Hugh ed 1911 Marggraf Andreas Sigismund Encyclopaedia Britannica Vol 17 11th ed Cambridge University Press p 705 Retrieved from https en wikipedia org w index php title Andreas Sigismund Marggraf amp oldid 1198701442, wikipedia, wiki, book, books, library,
