共查询到20条相似文献,搜索用时 15 毫秒
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红外光谱在毒药物检验中的应用 总被引:1,自引:0,他引:1
目的 建立毒药物检验的红外光谱测定方法。 方法 用液液萃取法提取检材中的安眠药、精神药品、农药、杀鼠剂和无机毒物 ,然后应用红外光谱法进行定性分析。 结果 常见毒药物均有其特征红外吸收峰 ,通过其特征吸收峰可以区分不同毒药物。 结论红外光谱法快速、准确 ,适用于干扰较轻检材中毒药物的定性分析。 相似文献
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应用超声波提取法和GC/MS法研究制毒原生植物麻黄草中伪麻黄碱、麻黄碱和罂粟中可待因、吗啡、蒂巴因、罂粟碱、那可汀的定性分析方法,此方法科学、准确,能满足制毒案件中麻黄草、罂粟的检验要求。 相似文献
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血液中氯胺酮的GC/MS/MS分析 总被引:1,自引:0,他引:1
目的建立血液中氯胺酮的定性分析方法;方法采用串联质谱法分析;结果选择氯胺酮的特征离子m/z180为母离子,CID电压为0.5v进行MS/MS分析;结论此检验方法能有效的消除来自人体血液的干扰物质,方法快速、灵敏、准确。 相似文献
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应用自动化工作站提取常见生物样本DNA 总被引:7,自引:2,他引:5
目的建立使用自动化工作站提取法医案件生物样本DNA的方法。方法选用Biomek 3000自动化工作站,采用DNA IQTM系统及Chelex法对法医案件中常见生物样本进行DNA提取,荧光定量技术进行定量,PCR扩增16个STR基因座并与手工提取方法比较。结果与手工提取方法进行比较,选用自动化工作站结合使用DNAIQTM系统及Chelex法提取DNA可获得满意的STR检验结果。结论自动化工作站可用于法医案件中常见生物样本的DNA提取。 相似文献
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本文报导一例海洛因伪品的鉴定。初用GC/MS检测,图谱库检索为安乃近。但用己知安乃近对照时发现,GC保留值和质谱图都有不符之处。经实验研究,最后鉴定为乙酰甲氨基安替比林。 相似文献
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T C Chao D S Lo R Gunasegaram W F Tan-Siew M M Tay 《Forensic science international》1992,54(2):141-151
In the early eighties, in response to increasing self-poisoning incidents by pharmaceuticals in Singapore, a comprehensive wide-sweep screen for these drugs in clinical gastric aspirates was devised and implemented by us. The toxicological screen which involved quadruplicate extractions, two in acidic conditions and the other two in alkaline conditions, required the following analyses to be carried out: UV on the acidic fraction, TLC on the basic fraction and mega-bore capillary GC/NPD (nitrogen phosphorus detector) on the combined fraction. The combined fraction if necessary was subjected to GC/MS analysis. Our screen satisfied the need to confirm the analytical outcome of one method by another. Combining the acidic and basic fractions for a single GC analysis saves on instrument time and manpower. All coma and emergency cases were required to undergo GC/MS analysis to prove the identity of toxic agents beyond reasonable doubt. Quality control procedures were instituted at key steps to ensure quality of analytical outcome. 相似文献
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In October 1987, anabolic steroids were controlled under Schedule IV of Florida State Statute 893. This study was designed to establish a method of analysis and identification of evidentiary cases. Spot tests, Fourier transform infrared spectroscopy (FT-IR), gas chromatography/mass spectroscopy (GC/MS), Fourier transform nuclear magnetic resonance (FT-NMR), thin-layer chromatography (TLC), and extractions were performed on standard and pharmaceutical steroids. Mandelin's accompanied by the sulfuric acid test was found to provide the best indication of a steroid among the following four spot tests performed: sulfuric acid, napthol-sulfuric acid, Liebermann's, and Mandelin's. TLC was successfully performed on the steroid samples using two different eluent systems: TP and TQ. GC/MS was a very useful method of analysis applicable to most steroids, with only a few exceptions. FT-IR spectra were found to match the spectra from the literature for all the standards tested. The combination of the above techniques was used successfully to identify all the standards tested. 相似文献
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大麻的体内代谢物THC—COOH的分析 总被引:2,自引:1,他引:2
本文介绍了定性定量分析大麻的主要代谢物THC-COOH的两种方法。所有试管硅烷化,尿样碱性水解。TLC法快速、简便,适用于多份检材的同时定性分析,最低检测限为50ng.采用衍生化、SIM的GC/MS方法灵敏,选择性、专一性强.五氟丙酸酐衍生化方法线性范围为20-250ng/ml,最低检测限10ng/ml,变异系数为8.4%,提取回收率为58.9%;甲基化方法线性范围10~100ng/ml,最低检测限5ng/ml,变异系数为5.6%,提取回收率为53.2%. 相似文献