红外光谱技术在微量物证中的作用目录.................................................1...............................................2................................................3.....................................3................................3..................................4...................................................4...................................................4................4....................................4...............................................4...............................................5....................................5....................................5...........................5..........................................5..........................................6........................................64.4药物和毒物的检验......................................6..............................................7.........................................8..................................................9..............................................10..................................................11摘要在微量物证领域，从案件中提取的物证通常是非常小的，样本的形态学是不同的，组成是复杂的。传统的红外光谱技术往往不能满足检测的要求。微红外技术是基于傅立叶变换红外光谱和显微镜技术的结合。和原本的红外光谱技术进行比较，此技术具备测试敏锐度高、微区研究与无损测试等优势。其基本上不会受到外部干扰，可以高效处理微量物证鉴定的难题，能够满足物证中痕量证据的特殊需要。通过对该实验中心的实际案例分析，详细讨论了微红外技术在显微物证鉴定领域中的优势。本文利用微红外技术对涂料、塑料、橡胶、纤维、药物和毒物的红外光谱振动特性进行了比较和分析。为各类刑事案件和交通事故案件的定性提供有力依据。实验结果表明，微红外技术是鉴定在微量物证的有效手段。关键词：微量物证；红外光谱；刑事案件AbstractInthefieldoftraceevidence,physicalevidenceextractedfromacaseisusuallyverysmall.Themorphologyofthesampleisdifferentandthecompositioniscomplex.Traditionalinfraredspectroscopytechnologyoftencannotmeettherequirementsofdetection.MicroinfraredtechnologyisbasedonthecombinationofFouriertransforminfraredspectroscopyandmicroscopy.Comparedwiththeexternalspectrumtechnology,microinfraredtechnologyhastheadvantagesofhighsensitivity,microareaanalysisandnondestructivetesting.Ithasalmostnotestofintroducingexternalinterference.Iteffectivelysolvestheproblemofidentificationoftraceevidenceandcanmeetthespecialneedsoftraceevidenceinmaterialevidence.Throughanalyzingtheactualcasesoftheexperimentalcenter,theadvantagesofmicroinfraredtechnologyinthefieldofmicroscopicevidenceidentificationarediscussedindetail.Inthispaper,theinfraredspectrumvibrationcharacteristicsofpaints,plastics,rubber,fibers,drugsandpoisonsarecomparedandanalyzedbymicroinfraredtechnology.Itprovidesastrongbasisforthequalitativeanalysisofvariouscriminalcasesandtrafficaccidents.Theexperimentalresultsshowthatmicroinfraredtechnologyisaneffectivewaytoidentifytraceevidence.Keywords:traceevidence;infraredspectroscopy;criminalcases.1绪论各种官能团的红外吸收带出现在相应范围的波数中，因此所有材料都具有对应的红外吸收带。利用对特征红外吸收带的振动频率进行研究，傅里叶变换红外光谱能对物质类型与过程开展相对详细的定性研究，所以在微量物证领域得到了广泛的应用。主要用于对犯罪现场及其相关对象的各种有机和无机证据进行比较和分析，为案件调查与法庭审判寻找充足的光谱信息。在目前的案件侦查中,通过比较和分析材料的红外光谱证据当场和实物证据的怀疑对象,它通...
