Prissila C Posted January 5, 2011 Report Share Posted January 5, 2011 anyone still doing this bio experiment??can you give me a general idea about this..help me..thx!hope someone know.. Reply Link to post Share on other sites More sharing options...
iber2011 Posted January 5, 2011 Report Share Posted January 5, 2011 Are you talking about chromatography?? Reply Link to post Share on other sites More sharing options...
Drake Glau Posted January 6, 2011 Report Share Posted January 6, 2011 Yes, he is. And the idea is that every ink is a different ratio of chemicals. Basically meaning that every ink is unique and has a "finger print" so to speak. When you do chromatography you are using the awesomeness that is capillary action. You mark a piece a paper about 1cm from the bottom of a piece of a paper WITH PENCIL. You use pencil because it isn't soluble in water (or alcohol if you use that as your solvent instead). Then you mark the same line with a pen. The ink is soluble in the alcohol/water though.Ok, now to how this works.The water/acohol begins to literally travel up the paper. As it does so it passes through the ink mark you made and some of that ink dissolves into the solvent you chose. The solvent will continue moving up and as it does little lines will appear of different colors. These are the different pigments. 1 Reply Link to post Share on other sites More sharing options...
Prissila C Posted January 13, 2011 Author Report Share Posted January 13, 2011 yes I am talking about the chromatography..I mean all chromatography process is the same right? or I need to make another design and procedure by myself?and should I use chromatography paper or just plain paper? nothing particular?? Reply Link to post Share on other sites More sharing options...
dessskris Posted January 13, 2011 Report Share Posted January 13, 2011 All chromatography prncesr is the same but still, don't exactly copy from a source. I think in IGCSE we used filter paper and actually called it the chromatograph (we did that in Chemistry). But just check with your Biology textbook if the paper can just be any paper. Reply Link to post Share on other sites More sharing options...
Drake Glau Posted January 13, 2011 Report Share Posted January 13, 2011 Sorry, she If you have access to the paper just use it And it's really the same for all of them. Only difference is between alcohol or water but really you could just do both o.O Reply Link to post Share on other sites More sharing options...
Prissila C Posted January 13, 2011 Author Report Share Posted January 13, 2011 so it's the matter of changing the percentage of the alcohol and the solvent don't u think? Reply Link to post Share on other sites More sharing options...
Drake Glau Posted January 13, 2011 Report Share Posted January 13, 2011 Well yea you could have a different % of alcohol in your solvent. Or just water. I'm not sure what you're doing with this chromatography so I can't really help with what you want to change or do etc. 1 Reply Link to post Share on other sites More sharing options...
Prissila C Posted January 13, 2011 Author Report Share Posted January 13, 2011 i don't know abt it yet..it's confusing..i think all the chromatography process is all the same and i just follow the step. all i can do is to change the variable and the concentration of the solution? am i right?i dont really understand..and in which factor i suppose to investigate?or it's just another separation of pigment? Reply Link to post Share on other sites More sharing options...
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