LIsa Black
Cape Coral, FL
Female, 49
I spent the five happiest years of my life in a morgue. As a forensic scientist in the Cleveland coroner’s office I analyzed gunshot residue on hands and clothing, hairs, fibers, paint, glass, DNA, blood and many other forms of trace evidence, as well as crime scenes. Now I'm a certified latent print examiner and CSI for a police department in Florida. I also write a series of forensic suspense novels, turning the day job into fiction. My books have been translated into six languages.
That's a pretty broad question. I can tell you that for both seminal stains and blood stains, the best way to package one is to let it dry, then place in a sterile paper envelope or bag. Never plastic! Then keep in a dry, cool environment.
Hope that helps.
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No, thank you. I would never want to be a cop--I don' t know how they do what they do. I would hate having to deal with stressed-out people all day long.
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If you have a list of homework questions, please email me at: Lisa-black@live.com
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I'm not sure what you mean: a) how long after a print is left will ninhydrin still detect it, in which case I can say from my own experiment that there's little rhyme or reason to this, sometimes older prints develop better than newer ones or vice versa, or b) how long does a print developed with ninhydrin last, and the answer to that is that ninhydrin is a dark purple dye, so it is permanent, though it will continue to develop so that the entire page may eventually turn purple so we use a fixative chemical on the now-visible print so that will stop the ninhydrin from darkening the paper further. I hope that helps!
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Sorry, but no. I’ve never been involved in the psychology of the suspects.Best of luck!
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Sure, no problem. Please email me at lisa-black@live.com.
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I suppose that’s theoretically possible, but I wouldn’t think it likely. The saliva would sink into the paper of the money quickly, and then when swabbing the person’s skin you’d have to happen on the exact spot where that tiny bit of saliva transferred to.
I hope that helps!
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