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目的建立固相萃取-液相色谱-串联质谱(SPE-LC-MS/MS)分析全血中多塞平的方法。方法以阿米替林为内标,全血样品经固相萃取处理后,通过液相色谱-串联质谱技术进行检测(电喷雾离子源正离子方式,多反应监测模式)。监测离子对m/z多塞平为280→107、280→235、280→220,阿米替林为278→233。多塞平和阿米替林的保留时间分别为15.15min和16.94min。结果全血中多塞平在0.005~1.00μg/mL质量浓度范围内呈线性关系,线性方程为y=3.2047x+0.0339,相关系数(r)=0.9996,检出限为0.001μg/mL;平均提取回收率为78.0%~82.9%,日内精密度〈2.55%,日间精密度〈5.90%。结论本方法快速简便、灵敏、重现性好,适用于全血中多塞平的检测。 相似文献
64.
目的建立GC—MS同时测定血液中苯海索、氯丙嗪和氯氮平的方法。方法血液中加入内标SKFszs。.在pH〉10条件下用V(苯):v(乙酸乙酯)=1:l提取,用GC—MS全扫描法进行定性检测:以地西泮一d;为内标,样品在pH〉10条件下用V(苯):v(乙酸乙酯)=l:1提取,用GC—MS选择离子监测方法进行定量检测.结果苯海索、氯丙嗪和氯氮平在20~10000ng/mL范围内呈线性关系,最小检测限分别为0.3、0.3和0.7n幽L(信噪比≥3),方法回收率为79.9%~85.5%,日内、日间精密度均小于5.1%。结论本方法可同时分析血液中苯海索、氯丙嗪和氯氮平,方法灵敏度高、快速、操作简便,适用于苯海索、氯丙嗪和氯氮平的血药浓度监测和急性中喜案件竹枪测 相似文献
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浅谈命案现场外来血迹的发现与识别 总被引:1,自引:0,他引:1
宋水清 《铁道警官高等专科学校学报》2011,(6):66-68
现代DNA分析技术已经成为刑事技术领域比对认定犯罪嫌疑人的重要手段.在此条件下,及时发现与识别命案现场血迹,特别是外来血迹,就成为侦破案件过程中及时查缉嫌疑人的关键环节之一。勘验工作中对现场反常血迹、作案工具或防卫工具上附着血迹,以及对现场血迹形态与分布进行分析筛选,有利于对犯罪行为过程的重现。 相似文献
67.
目的 探讨原因不明性不孕症的中医证候特点,为中药治疗原因不明性不孕症提供辨证依据.方法 根据不孕症诊断标准,将219例不孕症患者分为研究组(原因不明性不孕症)108例和对照组(配偶不育症导致的不孕症)111例,分析并比较两组中医证候分布特征,采用二项分类Logistic回归分析原因不明性不孕症的危险证候,以及中医证候与... 相似文献
68.
Allison M. Curran Ph.D. ; Paola A. Prada B.S. ; Kenneth G. Furton Ph.D. 《Journal of forensic sciences》2010,55(1):50-57
Abstract: Human scent evidence is utilized as an investigative tool through canine scent discriminations based on the premise that human scent is an individualizing characteristic. This study describes the development of what is effectively a human scent barcode consisting of the relative ratios of an individual's "primary odor" compounds utilized to determine a reproducible and individualizing profile which can be stored in a searchable database for a proof of concept of human scent as a biometric measure. Triplicate hand odor samples were evaluated from 10 subjects utilizing solid phase micro-extraction gas chromatography/mass spectrometry (SPME-GC/MS) and compared via Spearman Rank Correlations. Narrowing the compounds considered for each subject to only those common in all three samples, or a subject's "primary odor constituents," produced a greater degree of both individualization and discrimination; at both correlation thresholds of 0.9 and 0.8, the individuals were correctly discriminated and identified in 99.54% of the cases. 相似文献
69.
Anders Buchard M.Sc. Kristian Linnet M.D. D.M.Sc. Sys Stybe Johansen Ph.D. Julie Munkholm M.D. Michael Fregerslev M.D. Niels Morling M.D. D.M.Sc. 《Journal of forensic sciences》2010,55(2):457-463
Abstract: We investigated toxicological and pharmacogenetic factors that could influence methadone toxicity using postmortem samples. R‐ and S‐methadone were measured in femoral blood from 90 postmortem cases, mainly drug users. The R‐enantiomer concentrations significantly exceeded that of the S‐enantiomers (Wilcoxon’s test, p < 0.001). The samples were divided into four groups according to other drugs detected (methadone only, methadone and strong analgesics, methadone and benzodiazepines, or methadone and other drugs). There was no significant difference in any of the R‐methadone/total methadone ratios among the four groups. The median R/S ratio was 1.38, which tends to be higher than that reported for the plasma of living subjects. In addition, we investigated whether small nucleotide polymorphisms in the MDR1 gene that encode the drug transporter P‐glycoprotein were associated with the concentrations of R‐ and S‐methadone and its metabolite 2‐ethylidene‐1,5‐dimethyl‐3,3‐diphenylpyrrolidine. No significant association was detected. 相似文献
70.
Abstract: An article appearing in this journal in 2000 suggested that the sensitivity of the luminol test performed on denim fabric is usually no greater than at a 1:100 dilution of blood. This study shows that the luminol test may be unambiguously interpreted at substantially greater dilutions of blood. In this study, four different types of denim were tested by spraying a swatch of fabric with a typical formulation of the luminol reagent. Testing was conducted of dilutions of blood up to 1:1000, all of which showed distinct chemiluminescence. Diluted blood was applied to denim material in the form of a random number. A successful test was obtained only when a “blind” observer, i.e., an observer who was uninformed of the number, correctly reported the number. 相似文献