smhjn17 Posted April 24, 2015 Share Posted April 24, 2015 Im working for a project wherein i want to show the presence of cyanide in apricot kernels or bitter almond Test for cn- will be dn once i get cn- , I need some help regarding how must i go about hydrolysing the amygdalin to get cn-,....iv seen methods like using sulphuric acid and then picric acid..... Will i get good results and how ??? Also cyanide will be produced in dissolved state or gas? Link to comment Share on other sites More sharing options...
hypervalent_iodine Posted April 24, 2015 Share Posted April 24, 2015 I would strongly recommend not trying to obtain cyanide if you don't know what you're doing, as this could lead to some obviously bad results for you or others. Picric acid isn't something you want to be playing around with if you're unsure if your methods, either. Why don't you try and extract and quantify the amygdalin instead? Surely that would be easier? Link to comment Share on other sites More sharing options...
smhjn17 Posted April 25, 2015 Author Share Posted April 25, 2015 Wat bt this....http://mv.picse.net/alkoloids/almonds/test-for-hydrogen-cyanide-in-almonds/ I think this is safe Link to comment Share on other sites More sharing options...
hypervalent_iodine Posted April 25, 2015 Share Posted April 25, 2015 Look, anything where you are producing HCN is not a good idea if you are not experienced and can avoid it. Was there anything wrong with my other suggestion? How were you planning on quantifying it? Edit: what project is this for? I'd be curious to know how you planned on obtaining picric acid. Edit 2: I've realised that you didn't mention needing to quantify the CN present. My idea may be too involved, in this case. However, it would be helpful to know why you're trying to do this and what facilities you have access to? Link to comment Share on other sites More sharing options...
smhjn17 Posted April 25, 2015 Author Share Posted April 25, 2015 This is for a science event at some school....ill be doing this at thr level of my school lab Nd the link is only a reference Idont want to quantify it but just show the presence of cyanide ion qualitatively.... But yes i want to be safe and precautious thats why im finding the safest way.... Im really determined.....and picric acid is available in my school lab Link to comment Share on other sites More sharing options...
John Cuthber Posted April 25, 2015 Share Posted April 25, 2015 There is a way to measure cyanide using picric acid, but it seems you also need a spectrometer. http://www.infomine.com/publications/docs/CyanideMethodPicricAcid2.pdf You also need a known solution of cyanide to act as a calibration. No school should let you play with cyanides. However the prussian blue test gives a clearly visible blue/green colour if cyanide is present and the more cyanide you have, the deeper the blue so you might be able to use this sort of test http://legacy.library.ucsf.edu/tid/jvv53a99/pdf;jsessionid=C6F5899A4B4AFA8FB8E724B054788528.tobacco03 Link to comment Share on other sites More sharing options...
smhjn17 Posted April 25, 2015 Author Share Posted April 25, 2015 Thnk u so much for the suggestions... Link to comment Share on other sites More sharing options...
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