作者danhung (欢迎五子俘战)
看板CSI
标题Re: [问题] 关於检验血液的存在
时间Tue Mar 27 23:10:43 2007
※ 引述《tonyshi (xxxx)》之铭言：
: 关於CSI中 每次都会先用棉花棒沾不明东西
: 然後滴ㄧ种液体,若是血液的话就会有粉红色或是红色的产生
: 那种液体 应该是酚太(那个字打不出来)吧
: 可是酚太不是碰到硷性就会变红色吗
: 那样的话 碰到的不是血液 也变红色 那怎麽办
: 谢谢
Phenolphthalein is used to perform a presumptive blood test, and is commonly
known as the Kastle-Meyer test. A dry sample is collected with a swab or
filter paper. First a few drops of alcohol, then a few drops of phenolphthalein
and finally a few drops of hydrogen peroxide are dripped onto the sample. If
the sample turns pink then it is a positive test. This test is nondestructive
to the sample; it can be kept and used in further tests at the lab. This test
has the same reaction with blood from any animal, so further testing would be
required to determine whether it originates from a human.
reference: wiki
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