-------- Forwarded massage -------- From: [EMAIL PROTECTED] To: "metals" <[EMAIL PROTECTED]> Date: Mon, 15 May 2000 Subj: [metals] MERCURY VAPOR FROM AMALGAM FILINGS/COMPUTER MONITORS MERCURY FREE PRESS Freya Koss [EMAIL PROTECTED] Ortendahl T W, Hogstedt P & Holland R P Mercury vapor release from dental amalgam in vitro caused by magnetic fields generated by CRT's and electrical cutting procedures. Swed Dent J 1991 p 31 Abstract 22 ABSTRACT: People working in front of a cathode-ray tube screen (CRT) and who report they are negatively affected, sometimes complain about symptoms often related to "Oral galvanism". Another group of workers, occupationally exposed to magnetic fields, are divers, welding and cutting electrically under water. It has been repoerted (Ortendahl et. al. J. Undersea Biomed Res 1988;15:443-456) that the magnetic field flux density intraoraly at a certain current and with a specific distance relation between the oral cavity and the electric cord was 1.12 mT with a specific frequency spectra. Exposure of amalgam specimens to a magnetic field with 1.15 mT (50 Hz) caused morhological and chemical changes on the surfaces of the dental amalgams. Therefore, the aim of the study was to analyze if work in front of a CRT-screen would have any influence on the mercury vapor release from dental amalgam. The aim was also to analyze if a magnetic field with a complex frequency spectra and a flux density of 1.15 mT would influence the mercury vapor release. Materials and Methods: 5 CRT-screens were selected as sources for the magnetic field exposure. The criterias for the selection of screens were: 1. occurring frequently in swedish officies, 2. compensated and uncompensated screens with respect to the megnetic fields. From three types of dental amalgams, representative to swedish dentistry, cylindrical amalgam specimens were prepared and were immersed in artificial saliva in an electrolytic cell. The electrolytic cells were located exactly in front of the CRT-screens with a distance amalgam - CRT-screen of 50 cm during 6 hours. On a specific electrolytic cell, coils were adapted and supplied with a current to simulate the electrical cutting situation. The created field had a complex frequency spectra in order to create a more realistic simulation of the in vivo situation than the earlier used 50 Hz field. The mercury vapor release (Hg0) was registered continously and were determined by a gold-foil mercury vapor analyzer (Jerome 411). As control served amalgam specimens, not exposed to a magnetic field but immersed in the artificial saliva and a reference group which were not exposed to either the magnetic fields or artificial saliva. Results and Conclusion: 2 of the CRT-screens significantly increased the mercury vapor release from all three types of amalgam. One of these two screens were compensated and one were uncompensated. The magnetic fields which were supposed to simulate the electrical cutting situation did not cause any increased mercury vapor release. The study was supported by The Swedish Work Environmental fund. Mercury vapor release... http://www.algonet.se/~leif/yfORT91a.html ---------------------- Metals and Human Health - An E-mail Discussion Forum Sponsored by CFS Nutrition - "Feed Your Health"TM http://www.cfsn.com . <A HREF="http://www.ctrl.org/">www.ctrl.org</A> DECLARATION & DISCLAIMER ========== CTRL is a discussion & informational exchange list. Proselytizing propagandic screeds are unwelcomed. Substance—not soap-boxing—please! These are sordid matters and 'conspiracy theory'—with its many half-truths, misdirections and outright frauds—is used politically by different groups with major and minor effects spread throughout the spectrum of time and thought. That being said, CTRL gives no endorsement to the validity of posts, and always suggests to readers; be wary of what you read. CTRL gives no credence to Holocaust denial and nazi's need not apply. Let us please be civil and as always, Caveat Lector. ======================================================================== Archives Available at: http://home.ease.lsoft.com/archives/CTRL.html <A HREF="http://home.ease.lsoft.com/archives/ctrl.html">Archives of [EMAIL PROTECTED]</A> http:[EMAIL PROTECTED]/ <A HREF="http:[EMAIL PROTECTED]/">ctrl</A> ======================================================================== To subscribe to Conspiracy Theory Research List[CTRL] send email: SUBSCRIBE CTRL [to:] [EMAIL PROTECTED] To UNsubscribe to Conspiracy Theory Research List[CTRL] send email: SIGNOFF CTRL [to:] [EMAIL PROTECTED] Om
