مكشاف التقاط الإلكترون

مخطط مبسط لمكشاف التقاط الإلكترون

مكشاف التقاط الإلكترون [ملاحظة 1] هو جهاز ومكوّن من مكونات أجهزة الاستشراب الغازي (الكروماتوغرافيا الغازية) مهمته الكشف عن الذرات والجزيئات الموجودة في الوسط الغازي، وذلك عن طريق التقاطها للإلكترونات مما يؤدي إلى تأينها واكتسابها لشحنة كهربائية سالبة.

يعتمد هذا الجهاز على وجود النظير المشع نيكل-63. اخترع هذا الجهاز سنة 1957 من قبل العالم جيمس لوفلوك؛[1][2][3][4] ويستخدم بشكل واسع في أجهزة الاستشراب الغازي من أجل الكشف عن الآثار من المركبات الكيميائية في العينات.[5][6][7]

الهوامش

  1. ^ electron capture detector (ECD)

المراجع

  1. ^ Pearce, Fred (15 فبراير 2017). "Retrospective: How to accidentally save the planet". New Scientist ع. 3113. مؤرشف من الأصل في 2023-05-10.
  2. ^ "Library and Archive Catalogue EC/1974/16: Lovelock, James Ephraim". London: The Royal Society. مؤرشف من الأصل في 2014-04-10.
  3. ^ Lovelock، J. E. (1958). "A sensitive detector for gas chromatography". Journal of Chromatography A. ج. 1: 35–46. DOI:10.1016/S0021-9673(00)93398-3.
  4. ^ Lovelock، J. E. (1974). "The electron capture detector". Journal of Chromatography A. ج. 99: 3–12. DOI:10.1016/S0021-9673(00)90840-9.
  5. ^ Krejči، M.؛ Dressler، M. (1970). "Selective detectors in gas chromatography". Chromatographic Reviews. ج. 13: 1–59. DOI:10.1016/0009-5907(70)80005-9.
  6. ^ Pellizzari، E. D. (1974). "Electron capture detection in gas chromatography". Journal of Chromatography A. ج. 98 ع. 2: 323–361. DOI:10.1016/S0021-9673(00)92077-6.
  7. ^ Lovelock، J. E.؛ Maggs، R. J.؛ Wade، R. J. (1973). "Halogenated Hydrocarbons in and over the Atlantic". Nature. ج. 241 ع. 5386: 194. Bibcode:1973Natur.241..194L. DOI:10.1038/241194a0. S2CID:4222603.
أيقونة بذرة

هذه بذرة مقالة عن الكيمياء بحاجة للتوسيع. فضلًا شارك في تحريرها.

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