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《Forensic science international》1999,101(1):9-16
Etorphine is a synthetic narcotic analgesic usually used in veterinary medicine. It possesses an analgesic potency up to 1000 times greater than morphine and is therefore used in low doses, primarily for tranquilising large animals. For veterinary use, etorphine is usually available in its commercial formulation as Immobilon®, when in combination with acepromazine or methotrimeprazine. Due to the potency of etorphine, only very low doses are required to produce adverse or fatal effects. This paper describes a method for detecting and quantifying etorphine using HPLC with UV diode array detection (HPLC–DAD) and demonstrates the advantage of the technique for the detection of Immobilon® at low doses. In a forensic case involving Immobilon®, the etorphine concentrations measured in postmortem femoral vein and heart blood specimens were 14.5 and 23.5 μg/l, respectively. No etorphine was detected in the urine. To our knowledge this is the first time postmortem etorphine concentrations have been reported. 相似文献
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全血中西地那非的HPLC分析 总被引:1,自引:0,他引:1
目的建立血中西地那非的HPLC-DAD检测方法。方法用硅胶小柱分离提取血中的西地那非,HPLC-DAD分析。分析柱:Nova-pak C18(150×3.9mm),5.0μm;保护柱:Phenom enex C18(ODS,4.0×3.0mm,Octade-cyl);流动相A:0.06%三氟乙酸+0.06%三乙胺+0.25%乙腈,B:乙腈,梯度程序分离;DAD:230nm。结果血中西地那非线性检测范围为1.5-80.0μg/mL,最小检出限量为5ng,平均回收率:82.45%。结论本检验方法简单、准确、快速,适合于临床检测及刑事案件的快速分析。 相似文献
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目的 建立检测血液和尿液中头孢唑啉、头孢拉定、头孢哌酮和头孢噻肟的高效液相色谱法,并考察方法的适用性.方法 以乙酰苯胺为内标,血液和尿液用乙腈直接沉淀蛋白,采用Agilent Zorbax SB-Aq(250min×4.6mm,5 μm)色谱柱,流动相选用水(含0.12%三乙胺和0.12%乙酸)和乙腈的混合溶剂梯度洗脱,流速1 mL/min,检测波长254nm.结果 4种头孢菌素分离完全,工作曲线相关性均良好(r>0.9990),检出限为0.01μg/mL,回收率均不低于81.2%.结论 所建立的方法对血液和尿液中以上4种头孢菌素的检测快速、简便、准确,适用于实际检案中头孢菌素类药物的分析. 相似文献
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GC/MS法测定人体血液和肾、肝组织中的丙泊酚 总被引:1,自引:1,他引:0
目的 采用气相色谱/质谱法检测人体血液和肾、肝组织中的丙泊酚.方法 心血和肾、肝组织中的丙泊酚经环己烷提取,采用气相色谱/质谱法,丙泊酚选择m/z 163、178,内标百里香酚选择m/z 150、135进行测定;并考察方法专属性、线性范围、定量线与检出限、回收率与精密度.结果 丙泊酚的保留时间为8.17min,与内标百里香酚分离良好;其在心血和肾、肝组织中的检测浓度线性关系良好,r值均大于0.992,最低检测质量浓度分别为0.05 μg/mL、0.10μg/g及0.05 μg/g,方法回收率90% ~ 110%,日内、日间RSD均小于7%.结论 本文方法简便、灵敏、快速,其准确度、精密度和回收率均可满足生物检材中丙泊酚浓度的测定,可在相关研究及实践中选用. 相似文献
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目的建立血液、尿液以及肝中河豚毒素(tetrodotoxin,TTX)的液相色谱-串联质谱分析方法,并进行方法学验证。方法血液、尿液和肝用1%乙酸甲醇溶液去蛋白后,上清液用固相萃取法净化,LC-MS/MS检测。结果血液、尿液和肝中TTX检出限分别为2ng/mL、2ng/mL和4ng/g。血液和尿液在4~100ng/mL、肝在5~100ng/g的范围内线性关系良好,相关系数r≥0.9973;日内精密度和日间精密度均在12.80%以内;回收率大于47.2%。结论所建方法高效、灵敏、准确,可以为河豚毒素中毒的法医学鉴定、临床诊治以及食品安全的监控提供技术保障。 相似文献
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目的建立血、肝组织中芬太尼和舒芬太尼的HPLC-MS/MS分析方法。方法采用Oasis(MCX固相萃取柱进行提取,以XTerraTMRP18柱(2.1mm×100mm,3.5μm)色谱柱分离,以乙腈∶5mmol/L醋酸铵水溶液(氨水调pH=9.5)(65∶35)为流动相,流速为0.2mL/min。结果血及肝组织添加样品的线性范围为10ng/mL~500ng/mL,最小检出限为0.1ng/mL。结论本方法准确、快速,可用于生物检材血、肝组织中芬太尼和舒芬太尼的定性定量分析。 相似文献
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A simple method for analyzing nitrite in urine has been developed to confirm and quantify the amount of nitrite in potentially adulterated urine samples. The method involved separation of nitrite by capillary electrophoresis and direct UV detection at 214 nm. Separation was performed using a bare fused silica capillary and a 25 mM phosphate run buffer at a pH of 7.5. Sample preparation consisted of diluting the urine samples 1:20 with run buffer and internal standard, and centrifuging for 5 min at 2500 rpm. The sample was hydrodynamically injected, then separated using -25 kV with the column maintained at 35 degrees C. The method had upper and lower limits of linearity of 1500 and 80 microg/mL nitrite, respectively, and a limit of detection of 20 microg/mL. The method was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) protocol (Document EP10-A2), and validated using controls, standards, and authentic urine samples. Ten anions, ClO-, CrO4(-2), NO3-, HCO3-, I-, CH3COO-, F-, SO4-, S2O8(-2), and Cl-, were tested for potential interference with the assay. Interferences with quantitation were noted for only CrO4(-2) and S2O8(-2). High concentrations of Cl- interfered with the chromatography. The method had acceptable accuracy, precision, and specificity. 相似文献
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GC/NPD、GC/FID分析生物样品中的氟乙酰胺 总被引:2,自引:1,他引:1
报道了用GC/NPD、GC/FID分析生物试样中的氟乙酰胺的方法。在1g肝组织中加入5.0μg氟乙酰胺,回收率为85.1%,RSD为5.39(n=7);1ml血中加5μg,回收率为85.1%,RSD为7.11%;在1g胃组织中加入10μg,回收率为81.6%,RSD为10.1%(n=7)。研究的方法经动物实验和中毒案件的应用,效果较好 相似文献
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Weinmann W Vogt S Goerke R Müller C Bromberger A 《Forensic science international》2000,113(1-3):381-387
A fast method using liquid-liquid extraction and HPLC/tandem-mass spectrometry (LC/MS/MS) was developed for the simultaneous detection of 11-Nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid beta-glucuronide (THC-COOH-glucuronide) and 11-Nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid (THC-COOH) in urine samples. This highly specific method, which combines chromatographic separation and MS/MS analysis, can be used for the confirmation of positive immunoassay results even without hydrolysis of the sample or derivatisation of extracts. Liquid-liquid extraction was optimised: with ethylacetate/diethylether (1:1, v/v) THC-COOH-glucuronide and THC-COOH could be extracted in one step. Molecular ions of the glucuronide (MH(+), m/z 521) and THC-COOH (MH(+), m/z 345) were generated using a PE/SCIEX turboionspray source in positive ionisation mode; specific fragmentation was performed in the collision cell of an API 365 triple-quadrupole mass spectrometer and yielded major fragments at m/z 345 (for THC-COOH-glucuronide) and m/z 327 as well as m/z 299 for both cannabinoids. Chromatographic separation was performed using a reversed-phase C8 column and gradient elution with 0.1% formic acid/1 mM ammonium formate and acetonitrile/0.1% formic acid. Retention times were 22.2 min for the glucuronide and 26.8 min for THC-COOH. After enzymatic hydrolysis of urine samples with beta-glucuronidase/arylsulfatase (37 degrees C, 5 h), THC-COOH-glucuronide was no longer detectable by LC/MS/MS in urine samples. However, the THC-COOH concentration was increased. For quantitation of THC-COOH, THC-COOH-D(3) was added to the urine samples as internal standard prior to analysis. From the difference of THC-COOH in the native urine and urine after enzymatic hydrolysis, molar concentration ratios of THC-COOH-glucuronide/THC-COOH in urine samples of cannabis users were determined and found to be between 1.3 and 4.5. 相似文献
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目的建立血液中硫化氢的气相色谱质谱联用分析方法。方法取心血3mL-5mL,置于20mL顶空瓶中,加入1g氯化钠,加3mL-5mL蒸馏水,加入2mol/L盐酸1mL,加盖密封,混匀后于80℃水浴中加热20min。取液上气体0.5mL进样分析。结果在中毒死亡者的心血中检出硫化氢,保留时间参考值为3.6min。结论该方法可用于刑事案件中硫化氢的快速分析。 相似文献
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《法医学杂志》2015,(6):445-449 and 453
Objective: To determinate triptolide and wilforlide A in biological samples by liquid chromatography-tandem mass spectrometry (LC-MS/MS) method and to verify the method. Methods: After 0.4 mL blood, urine or 0.4 g hepatic tissues with internal standard were extracted by ethyl acetate, they were separated on a Allure PFP Propyl (100 mm × 2.1 mm, 5 μm) with a mobile phase of methanol-20 mmol/L ammonium acetate using gradient elution. For mass spectrometric detection, electrospray ionization (ESP) in positive mode was elected and the data was collected using multiple-reaction monitoring (MRM). Results: The linearity was good (r>0.9950) and the limit of detection was 2 ng/mL or 2 ng/g for triptolide and wilforlide A. The recovery was 61.08%-102.98%. The intra-day and inter-day precision was less than 12.58% for each biological sample, and the accuracy was 90.61%-105.80%. Conclusion: This method is simple, convenient and good selective, and could be applied to analysis of triptolide and wilforlide A in different biological samples. And the method may provide technical support for forensic medicine identification, clinical diagnosis and treatment of tripterygium wilfordii Hook. f. poisoning. © 2015 by the Editorial Department of Journal of Forensic Medicine. 相似文献
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生物检材中阿维菌素的HPLC—MS/MS分析 总被引:1,自引:1,他引:0
目的建立生物检材包括血、肝组织、胃组织中阿维菌素(Avermectins)的HPLC—MS/MS分析方法。方法采用Oasis HLB固相萃取柱进行提取,以XTerra^TM RP18柱(2.1mm×100mm,3.5μm)色谱柱分离,以甲醇-0.1%冰醋酸水溶液(75:25)为流动相,流速为0.2mL/min。结果线性范围10ng/mL~3μg/mL,最小检出限为0.1ng/mL。结论本方法准确、快速,可用于生物检材血中阿维菌素的定性定量分析,肝及胃组织中阿维菌素的定性分析。 相似文献
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目的建立一种检验生物检材中无机氰化物的GCMS/MS方法。方法首先将生物检材中的无机氰化物在酸性条件下蒸馏出,用碱性溶液吸收后,氰离子在相转移催化剂作用下被五氟苄基溴(PFB-Br)衍生化,最后用GC-MS/MS法分析衍生化产物。结果衍生化产物PFB-CN的MS/MS质谱图特征性强,定性准确;在20-1500ng/g浓度范围内呈良好的线性关系(r=0.998),最低检测限为5ng/g,回收率为82.3%-98.6%。结论本方法简单实用,灵敏度高,准确可靠,适用于生物检材中无机氰化物的检验。 相似文献
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