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<div class="ss"><div><span>导读： </span>每个品牌的口红都会有其着色特点。报道称，一种价格低廉的新技术将让法医专家通过犯罪现场的口红找到确切的品牌。在现实生活中，搜集样本进行化学成分分析其实需要更长的时间，而且价格也不便宜。现有的识别口红的技 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div>每个品牌的口红都会有其着色特点。报道称，一种价格低廉的新技术将让法医专家通过犯罪现场的口红找到确切的品牌。</div><div><br></div><div style="text-align: center;"><img src="http://www.oecr.com/data/attachment/portal/201603/24/154049uv006zhz0v2r3gxo.jpg"></div><div style="text-align: center;"><br></div><div>在现实生活中，搜集样本进行化学成分分析其实需要更长的时间，而且价格也不便宜。现有的识别口红的技术——X-射线衍射或拉曼光谱。这两种技术不仅需要专门的设备，还需要专业培训，并且仅能在为数不多的实验室进行。与电视节目不同的是，许多受资助的法医实验室对于这两种仪器的供应是短缺的。</div><div><br></div><div>色谱法是使混合物通过溶液或悬浮液从而进行分离的过程。这种更加简便的新方法包含利用两种溶剂除去口红污渍中多余的成分，分离出可用于鉴定的成分。接下来，利用很多法医实验室都拥有的一种技术——气相色谱技术，就能分辨出样本的独特有机成分。</div><div><br></div><div>在气相色谱(GC)中，混合物通过的是气体。研究小组还对薄层色谱法(TLC)和高效液相色谱法(HPLC)进行了<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>。如果结果是GC的效果最好。每个口红品牌都有独特的有机分子结构，从而提供了不同的色谱信号。</div><div><br></div><div>研究人员在近日召开的美国化学会第251次会议上展示了这种技术，他们正在建立不同口红品牌的化学成分库，如此一来，这种技术就可以在现实世界中大显身手。</div><div style="text-align: center;"><p><a href="data/attachment/portal/201603/24/154054pl7yjjooxkpnqx5b.jpg" target="_blank"><img src="data/attachment/portal/201603/24/154054pl7yjjooxkpnqx5b.jpg"></a></p><p>欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" 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