*********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? | |
flyingdog (OP) User ID: 1244805 United States 03/28/2011 04:42 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? these may be helpful, but I'm not sure what I'm looking at: WIKIPEDIA: Starch Indicator - [link to en.wikipedia.org] WIKIPEDIA: Iodine Test - [link to en.wikipedia.org] seems potassium iodide would have to be present, as well as the radioactive isotope in a high enough concentration ?? so saving some pasta water and dissolving a potassium iodide tab in it would do the trick, if I'm understanding it... help appreciated |
flyingdog (OP) User ID: 1244805 United States 03/28/2011 04:57 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1317511 United States 03/28/2011 05:30 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1309019 United Kingdom 03/28/2011 05:50 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1309019 United Kingdom 03/28/2011 06:16 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? I have just done a bit of googling. There seem to be a few experiments that use iodine to detect starch. This experiment could be reversed i suppose to use starch to detect iodine. |
Anonymous Coward User ID: 1266868 United States 03/28/2011 06:59 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? |
Anonymous Coward User ID: 1317611 Australia 03/28/2011 07:42 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? Chemical reaction tests cannot distinguish between radioactive and non radioactive atoms as the radioactive isotopes will generally react the same as the non radioactive ones. To detect radioactivity you need a Geiger counter or similar device such as this [link to www.amazon.com] |
Anonymous Coward User ID: 986398 United States 03/29/2011 02:52 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? I am doing some Boiler water titration chemistry right now using Starch Acid, "P" indicator and Iodide-Iodate to measure SO3 concentration which is an Oxygen scavenger. I have access to many more reagents however I am only following written procedures as I am not a chemist. If anyone finds a titration testing procedure for these compounds I'd be happy to try. |
flyingdog (OP) User ID: 1244805 United States 03/30/2011 05:44 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? Chemical reaction tests cannot distinguish between radioactive and non radioactive atoms as the radioactive isotopes will generally react the same as the non radioactive ones. Quoting: Anonymous Coward 1317611To detect radioactivity you need a Geiger counter or similar device such as this [link to www.amazon.com] for those of us "inland" and unable to afford a geiger counter, a simple test to find radioactive iodine might be useful...especially if the levels of this shit continue to increase over north america that's what I'm interested in - the ability of the starch test to detect radioactive iodine (I-131, etc) |
flyingdog (OP) User ID: 1244805 United States 03/30/2011 05:50 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? I am doing some Boiler water titration chemistry right now using Starch Acid, "P" indicator and Iodide-Iodate to measure SO3 concentration which is an Oxygen scavenger. Quoting: Anonymous Coward 986398I have access to many more reagents however I am only following written procedures as I am not a chemist. If anyone finds a titration testing procedure for these compounds I'd be happy to try. if you can simply add plain-old-starch to a mixture of water/radioactive iodine (I-131), then (if no color change) add a drop of diluted KI to the mix... I'm not much on chemistry myself (haven't been laid in I don't know how many years) but it seems a simple reaction.. iodine, and possibly iodate combined in a 50-50 molar weight, dissolved in water will produce a blue-black coloring when introduced to starch (the iodine/iodate will form covalent bonds to the starch helix, and thus show coloring?) any help you provide will be thanked by many I'm sure |
Anonymous Coward User ID: 1320194 Australia 03/30/2011 05:52 AM Report Abusive Post Report Copyright Violation | Re: *********************************************** QUESTION FOR GLPER WITH CHEMISTRY BACKGROUND - STARCH TEST FOR RADIOACTIVE IODINE?? Chemical reaction tests cannot distinguish between radioactive and non radioactive atoms as the radioactive isotopes will generally react the same as the non radioactive ones. Quoting: Anonymous Coward 1317611To detect radioactivity you need a Geiger counter or similar device such as this [link to www.amazon.com] Yes you won't be able to tell the difference between radioactive and non-radioactive iodine with a chemistry test. You need a radiation detector, like a dosimeter for example. [link to www.dosimeter.com] |
Anonymous Coward User ID: 1320327 Australia 03/30/2011 06:03 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1320327 Australia 03/30/2011 06:05 AM Report Abusive Post Report Copyright Violation | |