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http://dbpedia.org/ontology/abstract The history of mass spectrometry has its r … The history of mass spectrometry has its roots in physical and chemical studies regarding the nature of matter. The study of gas discharges in the mid 19th century led to the discovery of anode and cathode rays, which turned out to be positive ions and electrons. Improved capabilities in the separation of these positive ions enabled the discovery of stable isotopes of the elements. The first such discovery was with the element neon, which was shown by mass spectrometry to have at least two stable isotopes: 20Ne (neon with 10 protons and 10 neutrons) and 22Ne (neon with 10 protons and 12 neutrons). Mass spectrometers were used in the Manhattan Project for the separation of isotopes of uranium necessary to create the atomic bomb.anium necessary to create the atomic bomb. , 質譜法歷史最早始于物質性質的物理和化學研究。19世紀中葉對的研究導致發現了和陰極射線，結果證明它們是離子和電子。 提高分離這些正離子的能力而發現元素的同位素。第一個發現是氖元素，質譜證明它至少有兩種穩定同位素: 20氖（10個質子、10個中子）以及22氖 （10個質子、12個中子）。在曼哈頓計劃中，質譜儀亦曾用於分離製造核武器所需的鈾同位素。
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rdfs:comment The history of mass spectrometry has its r … The history of mass spectrometry has its roots in physical and chemical studies regarding the nature of matter. The study of gas discharges in the mid 19th century led to the discovery of anode and cathode rays, which turned out to be positive ions and electrons. Improved capabilities in the separation of these positive ions enabled the discovery of stable isotopes of the elements. The first such discovery was with the element neon, which was shown by mass spectrometry to have at least two stable isotopes: 20Ne (neon with 10 protons and 10 neutrons) and 22Ne (neon with 10 protons and 12 neutrons). Mass spectrometers were used in the Manhattan Project for the separation of isotopes of uranium necessary to create the atomic bomb.anium necessary to create the atomic bomb. , 質譜法歷史最早始于物質性質的物理和化學研究。19世紀中葉對的研究導致發現了和陰極射線，結果證明它們是離子和電子。 提高分離這些正離子的能力而發現元素的同位素。第一個發現是氖元素，質譜證明它至少有兩種穩定同位素: 20氖（10個質子、10個中子）以及22氖 （10個質子、12個中子）。在曼哈頓計劃中，質譜儀亦曾用於分離製造核武器所需的鈾同位素。
rdfs:label 质谱法历史 , History of mass spectrometry
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