LC-MS/MS快速筛分样本中的甲基苯丙胺、甲氧那明

目的建立准确可靠的甲氧那明、甲基苯丙胺初筛阳性样本的确证分析方法,排除由于服用甲氧那明而产生的假阳性结果。方法采用Kinetex~?C18 (100×2.1mm,2.6μm)色谱柱,乙腈和0.1%的甲酸梯度洗脱,流速0.4 mL/min。质谱条件:选用电喷雾离子源,在正离子电离模式下,采用多反应监测(MRM)的质谱扫描方式,甲氧那明、甲基苯丙胺的母/子离子对分别为:m/z 180.2→120.8和m/z 150.1→91.1。结果甲氧那明线性范围0.2～500ng/mL,线性相关系数0.9913,最低检测浓度(LOQ, S/N=3)为0.2ng/ml,空白添加回收率85.6%～98.3%。甲基苯丙胺线性范围0.05～500ng/mL,线性相关系数0.9968,最低检测浓度(LOQ, S/N=3)为0.05ng/ml,空白添加回收率91.4%～103.1%。结论本研究建立的LC-MS/MS分析方法准确、快速、有效,可用于因甲氧那明干扰初筛为阳性的样本进一步的确证是否含有甲基苯丙胺成分。     

HPLC-MS／MS同时检测全血中佐匹克隆、唑吡坦和扎来普隆

目的建立全血中佐匹克隆、唑吡坦和扎来普隆的液相色谱一四级杆飞行时间串联质谱联用同时检测方法。方法采用液液萃取进行提取,提取物以ZorbaxEclipsePlusC18（2．1×50mm,1．8fire）色谱柱分离,以10mmol／L甲酸铵（含0．1％甲酸）一乙腈为流动相梯度洗脱,流速为0．2mL／min,四级杆一飞行时间串联质谱检测。结果全血中佐匹克隆和扎来普隆的线性范围为10ng／mL-500ng／mL,检出限为3ng／mL唑吡坦的线性范围为3ng／mL-300ng／mL,检出限为lng／mL。结论本方法准确、快速、灵敏,可用于全血中佐匹克隆、唑吡坦和扎来普隆的同时定性、定量检测。     

LC-MS/MS分析人全血中五氟利多

目的建立人体全血中五氟利多浓度的液相色谱-质谱联用法（LC-MS/MS）分析方法。方法全血中五氟利多和利培酮（内标）经正己烷液-液提取后,采用Capcell Pak C18色谱柱（250mm×2.0mm5,μm）进行分离,流动相为乙腈：20mmol/L乙酸胺和0.1%甲酸溶液（75∶25,V/V）,流速为0.2mL/min,然后以MS/MS电喷雾正电离的多反应监测扫描方式（MRM）测定。用于定量分析的离子为m/z 524→109（五氟利多）和m/z 411→191（内标）。结果五氟利多的最低检测限为0.2ng/mL,在0.4～400ng/mL浓度范围内线性良好（r=0.9994）,低、中、高浓度（1ng/mL、10ng/mL、100ng/mL）准确度分别为97%,108%和95%,日内和日间RSD均小于15%。结论该方法简便、快速、灵敏,适用于全血中五氟利多浓度的测定。     

卡西酮、甲卡西酮和4-甲基甲卡西酮的 LC-MS/MS分析方法的研究

目的 建立卡西酮、甲卡西酮、4-甲基甲卡西酮的LC-MS/MS定性定量分析方法.方法 采用Agilent 6460三重串联四极杆液质联用仪（LC/QQQ）,样品用甲醇直接提取,采用Agilent Zorbax（R）Eclipse Plus C18色谱柱（100mm×2.1mm,1.8μm）,流动相为0.1％甲酸和乙腈,梯度洗脱,流速为0.3mL/min,进样体积为3μL.质谱应用ESI源、正离子模式、多反应监测（MRM）方式检测卡西酮、甲卡西酮、4-甲基甲卡西酮.结果 卡西酮的线性范围为1ng/mL～25000ng/mL,甲卡西酮的线性范围为0.1ng/mL～～10000ng/mL,4-甲基甲卡西酮的线性范围为1ng/mL～10000ng/mL.结论 该方法简单、准确,灵敏度高,可以满足案件鉴定工作的需要.     

介质液液萃取-气相色谱/串联质谱法测定血液中4种吩噻嗪类药物

目的研究建立介质液液萃取-气相色谱/串联质谱分析血液中吩噻嗪类药物的方法。方法采用介质液液萃取技术处理血液样品,乙醚进行洗脱,然后用气相色谱/串联质谱仪测定。结果 4种吩噻嗪类药物的检测限在1.0 ng/mL~3.3 ng/mL之间,线性范围25 ng/mL或50 ng/mL~1000 ng/mL,以空白血液样品为基体进行回收试验测得回收率为73.8 ng/mL~104.1 ng/mL,测定值的相对标准偏差(n=5)在4.7%~10.2%之间。结论 SLE-GC/MS/MS检测法可用于血液中吩噻嗪类药物的检测分析且该方法具有良好的灵敏度、回收率、精密度及重现性。     

血中水合氯醛及其代谢物的GC-MS/MS和HPLC-MS/MS检测

目的建立血液中水合氯醛及其代谢物的色谱串联质谱检测方法,用于法医案件的检验。方法血液检材经乙酸乙酯萃取后气质联用选择离子扫描(SIM)检测水合氯醛和三氯乙醇,经乙腈沉淀蛋白后液质联用负离子模式下多反应监测(MRM)检测三氯乙酸。结果水合氯醛及其代谢物的线性范围分别是100ng/mL～15μg/mL、500ng/mL～20μg/mL和500ng/mL～15μg/mL,线性关系良好,R~2均大于0.998,最低检出限分别为15ng/mL、130ng/mL和30ng/mL,最低定量限分别为50ng/mL、500ng/mL和100ng/mL;日内精密度分别在2.26%～7.31%、3.09%～7.23%和2.79%～5.37%;日间精密度分别在4.14%～7.03%、2.18%～4.43%和2.75%～4.96%;提取回收率分别为92.72%～106.30%、94.22%～103.70%和89.05%～104.50%。并对水合氯醛相关案件进行检测,心血中水合氯醛浓度为411.34ng/mL,三氯乙醇浓度为9.49μg/mL,三氯乙酸浓度为8.32μg/mL。结论本文建立的水合氯醛及其代谢物的检测方法准确简单快速,可应用于水合氯醛中毒案件的法医学鉴定。     

UPLC-MS/MS测定生物样本中3种麻痹性贝类毒素

目的 建立全血和尿液中3种麻痹性贝类毒素（石房蛤毒素、脱氨甲酰基石房蛤毒素和新石房蛤毒素的超高效液相色谱—串联质谱检测方法。方法 用乙腈-0.1%乙酸甲醇（1:3,v:v）提取血液样本，用甲醇（含0.5%乙酸）提取尿液样本后过PA固相萃取柱，选用ACQUITY UPLC BEH Amide色谱柱。质谱仪采用电喷雾离子源，正离子扫描，多反应监测模式检测，外标法定量。结果 血添加样本中，石房蛤毒素、脱氨甲酰基石房蛤毒素和新石房蛤毒素分别在0.5～100 ng/mL、1～100 ng/mL范围内线性关系良好，相关系数(r)≥0.996，毒素的检出限LOD分别为0.1 ng/mL、0.5 ng/mL、0.5 ng/mL，定量限LOQ分别为0.5 ng/mL、1.0 ng/mL、1.0 ng/mL。方法的回收率为63.23%～81.77%，日内精密度为3.06%～9.58%，日间精密度为3.87%～9.96%，准确度为91.67%～102.42%。尿添加样本中，3种毒素均在1～100 ng/mL范围内线性关系良好，相关系数(r)≥0.996，毒素的检出限为0.5 ng/mL，定量限为1.0 ng...     

唾液、尿液中甲基苯丙胺浓度分布及初筛情况分析

目的获得吸毒者唾液和尿液检材中甲基苯丙胺浓度分布及胶体金试剂条初筛情况。方法液相色谱串联质谱法获得吸毒者唾液和尿液检材中甲基苯丙胺浓度,通过胶体金试剂条检测获得初筛情况。对两者结果进行比对分析。结果采用直接沉淀蛋白法和液质MRM扫描法检测,唾液线性范围是1~100ng/m L,线性相关系数0.9987,检出限是0.1ng/m L,定量限是1ng/m L;尿液线性范围是1~100ng/m L,线性相关系数0.9943,检出限是0.5ng/m L,定量限是1ng/m L。唾液和尿液检材按一定比例稀释,使浓度在线性范围内。采用唾液和尿液四种型号甲基苯丙胺胶体金试剂条初筛,直接点样,目测判断结果。结论胶体金试纸条初筛尿液检出率为79%左右;唾液检出率大概为81%,两种试剂条结合使用,检出率可以提高到93%以上。结合此次初筛结果和仪器确认浓度可以发现:灰区设置和灵敏度的设置对检出率有一定影响,建议提高灵敏度以满足筛查工作需要。     

LC-MS/MS同时分析血液中五种巴比妥类药物

目的建立血液中巴比妥类药物液相色谱-串联质谱(LC-MS/MS)检测方法。方法血液中的巴比妥类药物用有机溶剂液-液萃取,以乙酰水杨酸为内标,LC-MS/MS测定。结果检测血液中五种巴比妥类药物的最小检出限(LOD)均为10ng/mL,线性范围在0.02￣10μg/mL内良好,方法的回收率70%￣87%。结论所建方法快速、灵敏、准确,可以满足临床毒物和法庭毒物分析的需要。     

QTRAP LC-MS/MS方法分析头发中氯胺酮结构类似物

目的 建立头发中氯胺酮结构类似物的液相色谱-四极杆/线性离子阱质谱（QTRAP LC-MS/MS）的检测方法。方法 将洗净晾干的20 mg头发加入1 mL提取液冷冻研磨后冰浴超声提取,离心取上清液过滤膜后,经ACQUITY UPLC?HSS T3色谱柱分离,采用多反应监测模式同时测定10种氯胺酮结构类似物。以该方法分析20例阳性头发样本中乙基氟胺酮、去甲氟胺酮和替来他明的含量。结果 头发中10种氯胺酮结构类似物在0.01～2.00ng/mg范围内线性关系良好,相关系数> 0.99,回收率为89.1%～106.1%,基质效应为88.3%～106.0%。20例阳性头发样本中乙基氟胺酮的含量范围为0.02～8.35 ng/mg,平均值1.59 ng/mg,中位值0.40 ng/mg;去甲氟胺酮的含量范围为0.01～0.94 ng/mg,平均值0.28 ng/mg,中位值0.19 ng/mg;替来他明的含量范围为0.02～10.93 ng/mg,平均值2.69 ng/mg,中位值2.11 ng/mg。结论 本方法简便、高效、可靠,适用于头发中氯胺酮结构类似物的检验。样本数据为氯胺酮结构类...     

HS-SPME-GC/MS法检测尿液及毛发中苯丙胺类毒品

目的采用顶空固相微萃取（HS-SPME）、GC/MS分析方法,对生物样品中苯丙胺（AM）、甲基苯丙胺（MAM）、3,4-亚甲二氧基苯丙胺（MDA）和3,4-亚甲二氧基甲基苯丙胺（MDMA）4种苯丙胺类毒品进行定性定量分析。方法在碱性和饱和盐处理状态下,采用100μm聚二甲基硅氧烷（PDMS）萃取纤维,于顶空瓶中进行生物样品AM、MAM、MDA、MDMA 4种毒品萃取,以2-甲基苯乙胺为内标,经气-质联用选择离子检测（GC/MS/SIM）模式进行定性定量分析。对HS-SPME条件优化,对方法的精密度、准确度和检出限进行测定。结果 AM、MAM、MDA、MDMA 4种毒品尿液中的最低检出限为5ng/mL,毛发中的最低检出限为0.5ng/mg。尿液中线性关系范围为0.05μg/mL~5μg/mL,r〉0.991,回收率为82%~108%,RSD为2.6%~6.1%（n=5）;毛发中线性关系范围为5ng/mg~500ng/mg,r〉0.992,回收率为80%~113%,RSD（%）为1.4%~6.8%（n=5）。结论 HS-SPME-GC/MS各项定量参数符合分析要求。该方法简单、灵活、经济、快速、无溶剂,适用于生物检材中该类毒品的分析。     

生物检材中吗啡类生物碱的LC-MS／MS分析

目的针对滥用药物分析鉴定实践中亟待解决的问题,开展LC-MS/MS分析生物检材中吗啡类生物碱的应用研究。方法满足不同的鉴定需要,分别建立血液、尿液、唾液和头发等生物检材的样品前处理方法,确定同时分析海洛因、单乙酰吗啡、吗啡、可待因、乙酰可待因、二氢可待因酮和氢吗啡酮等吗啡类生物碱的LC-MS/MS方法。将方法应用于实际案例。结果所建立的方法对吗啡类生物碱分离良好。尿液稀释法、尿液提取法和头发中吗啡的最低检测限(LOD)分别为10ng/mL、0.01ng/mL和0.01ng/mg。结论所建立的方法简便、快速、特异性强、灵敏度高。目标物中加入二氢可待因酮和氢吗啡酮扩大了方法的实用范围。     

Simultaneous analysis of six amphetamines and analogues in hair, blood and urine by LC-ESI-MS/MS. Application to the determination of MDMA after low ecstasy intake

A rapid and sensitive method using LC-MS/MS triple stage quadrupole for the determination of traces of amphetamine (AP), methamphetamine (MA), 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxymethamphetamine (MDMA, "ecstasy"), 3,4-methylenedioxyethamphetamine (MDEA), and N-methyl-1-(3,4-methylenedioxyphenyl)-2-butanamine (MBDB) in hair, blood and urine has been developed and validated. Chromatography was carried out on an Uptisphere ODB C(18) 5 microm, 2.1 mm x 150 mm column (Interchim, France) with a gradient of acetonitrile and formate 2 mM pH 3.0 buffer. Urine and blood were extracted with Toxitube A (Varian, France). Segmented scalp hair was treated by incubation 15 min at 80 degrees C in NaOH 1M before liquid-liquid extraction with hexane/ethyl acetate (2/1, v/v). The limits of quantification (LOQ) in blood and urine were at 0.1 ng/mL for all analytes. In hair, LOQ was <5 pg/mg for MA, MDMA, MDEA and MBDB, at 14.7 pg/mg for AP and 15.7 pg/mg for MDA. Calibration curves were linear in the range 0.1-50 ng/mL in blood and urine; in the range 5-500 pg/mg for MA, MDMA, MDEA and MBDB, and 20-500 pg/mg for AP and MDA. Inter-day precisions were <13% for all analytes in all matrices. Accuracy was <20% in blood and urine at 1 and 50 ng/mL and <10% in hair at 20 and 250 pg/mg. This method was applied to the determination of MDMA in a forensic case of single administration of ecstasy to a 16-year-old female without her knowledge during a party. She suffered from hyperactivity, sweating and agitation. A first sample of urine was collected a few hours after (T+12h) and tested positive to amphetamines by immunoassay by a clinical laboratory. Blood and urine were sampled for forensic purposes at day 8 (D+8) and scalp hair at day 60 (D+60). No MDMA was detected in blood, but urine and hair were tested positive, respectively at 0.42 ng/mL and at 22 pg/mg in hair only in the segment corresponding to the period of the offence, while no MDA was detectable. This method allows the detection of MDMA up to 8 days in urine after single intake.     

LC-MS/MS同时分析尿液中15种安眠镇静药物及其代谢物

目的建立尿液中15种常见安眠镇静药物及代谢物的液相色谱-串联质谱分析方法。方法尿液经酶水解、固相萃取后,用C18液相柱分离,以含甲酸铵和甲酸的水、乙腈为流动相梯度洗脱,质谱采用电喷雾电离（ESI）-正负离子模式同时扫描,采用二级质谱多反应监测（MRM）模式检测目标化合物。结果以化合物的保留时间、两对母离子/子离子对定性,尿中常见安眠镇静药物的检测限为0.01～0.5ng/mL（ESI＋）和10ng/mL（ESI-）;相关系数r在0.994以上;日内及日间精密度均在18%以下;绝对回收率在64.80%～116.20%之间。结论方法快速、灵敏、简便、可靠,能同时分析尿液中的15种安眠镇静药物及其代谢物。     

GC法检测血液和尿液中甲基苯丙胺和咖啡因

目的建立同时测定血、尿中甲基苯丙胺和咖啡因含量的方法。方法应用GC／NPD技术,以4-苯基丁胺为内标,直接碱化,用氯仿提取,三氟乙酸酐衍生化,8CB熔融石英毛细管柱（30m×0．25mm×0．25μm）分析。结果生物样品中甲基苯丙胺与咖啡因在0．012—7．5μg/mL浓度范围内线性关系良好,检测限（S／N=3）依次为1．2ng／mL,0．6ng／mL（血）;1．6ng／mL,0．8ng／mL（尿）。苯丙胺在0．017—10．0μg／mL浓度范围内线性关系良好,检测限为1．6mg／mL（血）,3．2ng／mL（尿）。所有样本回收率均大于85％。结论本方法准确、灵敏,适用于血、尿中甲基苯丙胺及其代谢物苯丙胺的三氟乙酸酐衍生化物和咖啡因的同时检测,为判定滥用毒品种类、追查毒品来源以及研究生物体内甲基苯丙胺和咖啡因的交互影响提供了检测手段。     

GC-MS/MS法测定人头发中的大麻酚类及其代谢物

目的 建立同时检测头发中△9-四氢大麻酚(THC)、大麻酚(CBN)、大麻二酚(CBD)和△9-四氢大麻酸(THC-COOH)的分析方法.方法头发样品加入氘代内标△9-四氢大麻酸(THC-COOH-d3),经碱水解后,以混合溶剂[V(正己烷)∶V(乙酸乙酯=9∶1]进行提取,吹干,残留物经双(三甲基硅烷基)三氟乙酰胺(BSTFA)衍生化,用GC-MS/MS方法进行分析.结果 头发中THC-COOH、THC、CBN和CBD的最低检出限分别为4、4、10和20 pg· mg-1,各化合物在0.04～5ng· mg-1呈良好的线性关系(r＞0.999),方法精密度、准确度均符合要求.结论本方法选择性强、灵敏度高,适用于头发中CBD、CBN、THC及其代谢物THC-COOH的分析,并成功应用于实际案例中.     

SPME-GC-MS法快速检测尿液中的甲基苯丙胺

目的建立SPME-GC-MS快速检测吸毒人员尿液中的甲基苯丙胺的方法。方法以SPME法提取尿液中的甲基苯丙胺,以1-萘胺作内标,用GC-MS法检测。结果在2～2000ng/mL的范围内呈线性关系(r=0.9985,n=7),甲基苯丙胺的检测限为0.5ng/mL(信噪比3),在低、中、高(200、500、1000ng/mL)浓度的平均相对回收率为102.6%、98.5%、93.2%,日内及日间RSD分别小于8.1%、7.2%。结论用此方法检测尿液中的甲基苯丙胺,灵敏度高,简单快速,易操作,适用于吸毒人员的快速定性定量检测。     

Hair analysis for drug abuse: I. Determination of methamphetamine and amphetamine in hair by stable isotope dilution gas chromatography/mass spectrometry method

Determination of methamphetamine and amphetamine in hair was performed by gas chromatography/mass spectrometry using stable isotope-labeled internal standards, 2-methylamino-1-phenylpropane-2,3,3,3-d4 and 2-amino-1-phenylpropane-2,3,3,3-d4. Extraction of hair with methanol/5M hydrochloric acid (20:1) using ultrasonication was chosen as the standard method. The calibration curves for amphetamines in the hair were linear from 1 to 100 ng/mg (r greater than 0.99). The detection limit was 0.5 ng/mg at the 95% confidence level. The coefficients of variation (CV) (n = 8) of analysis using the spiked hair with methamphetamine were from 0.7 to 6%. The CV (n = 8) of analysis of the methamphetamine abuser's hair was 17.5%. Sectional analysis of monkey and human hair after methamphetamine ingestion suggested a good correlation between the duration of drug use and drug distribution in the hair.     

Fast LC-MS/MS method for the determination of amphetamine, methamphetamine, MDA, MDMA, MDEA, MBDB and PMA in urine

A fast method was designed for the simultaneous determination of amphetamine (A), methamphetamine (MA), PMA, MDA, MDMA, MDEA and MBDB in urine. The drugs were analysed by LC (ESI)-MS/MS, after a simple liquid-liquid extraction in the presence of the deuterated analogues. Reverse phase separation on an Atlantis dC18 Intelligent Speed column was achieved in less than 4 min under gradient conditions, and the total run time was 8 min. The method was fully validated, including linearity (1-1000 ng/mL for A, MDMA, MDEA and MBDB; 2-1000 ng/mL for MDA and PMA; 1-200 ng/mL for MA; r2>0.99 for all compounds), recovery (>80%), within-day and between-day precision and accuracy (CV and MRE<12.7% for intermediate level and ULOQ, and <17.2% for LLOQ), limit of detection (0.2 ng/mL for MDMA, MDEA and MBDB; 0.5 ng/mL for A, MA and PMA; 1 ng/mL for MDA) and quantitation (1 ng/mL for A, MA, MDMA, MDEA and MBDB; 2 ng/mL for MDA and PMA) and relative ion intensities. No matrix effect was observed. The procedure proved to be sensitive, specific and rapid, and was applied to real forensic cases.