Quantification of psilocin in human whole blood using liquid chromatography–tandem mass spectrometry (LC–MS/MS)

There has been burgeoning interest in psilocybin-use for the treatment of various neurological and neurodegenerative diseases. Psilocybin is mistakenly perceived as the principal pharmacologically active compound due to its high concentrations found in magic mushrooms; however, it is the prodrug of psilocin. Despite the expanding body of clinical research seeking to understand the pharmacodynamic/pharmacokinetic properties of psilocin, and its role in inducing dramatic changes to cognitive function, there has not been a corresponding increase in the development of sensitive analytical methods that can quantify psilocin in different biological fluids. Existing analytical methods have been developed using plasma, serum, and urine as the matrix of choice, but with the unknown blood-to-plasma ratio of psilocin, any pharmacokinetic conclusions drawn solely on plasma data may be misleading. Thus, the main objective of this study is to develop the first analytical method that utilizes SPE and LC–MS/MS to quantify psilocin in human whole blood. The SPE procedure yielded a high recovery efficiency (≥89%) with minimal matrix effects. The method was validated according to ANSI/ASB 036 guidelines. Linearity was between 0.7–200 ng/mL and encompassed previously reported ranges found in plasma/serum. Bias, within- and between-run precision for all quality controls met ANSI/ASB 036 acceptability criteria. Endogenous/exogenous interferences and carryover were negligible. Psilocin stability was assessed at 4°C over 48 h and was considered stable. Although a proof-of-concept study will need to be performed to characterize the method, this analytical workflow was able to detect and quantify psilocin in human whole blood at low limits of quantification.     

HPLC-ESI/MS/MS检测奥克托金的方法研究

目的建立HPLC-ESI-MS/MS检测奥克托金的方法。方法在负离子模式下,引入CH3COO-,形成加合离子[M＋CH3COO]-,通过电喷雾电离和多反应监测模式,找出离子对,进行定性分析。结果确定奥克托金的检测离子对为354.9/46.0,354.9/147,354.9/174.2和354.9/100,最低检出限达5×10-2ng/mL。结论本方法可以有效的检出微量奥克托金。     

GC/MS,MS/MS在毒物及其代谢物分析中的应用

当今,制药工业的飞速发展,大批新药,特别是止痛药、麻醉药、新型农药和加工剂型的问世、发展与广泛应用,加之管理不善,控制不严,使中毒案件有逐年增多之势.法庭科学要求毒物工作者提供快速、准确的毒物及其代谢物的鉴定方法.常用的TLC、UV、HPLC、IR、GC等分析方法,固然有许多优点,但就应用范围,检测灵敏度和对未知物结构定性、定量分析均不如MS法.GC/MS仪作为复杂有机混合物快速、灵敏、可靠的鉴定技术在法庭科学鉴定中已获得越来越广泛的应用.早在70年代初,美国法医毒物学家首先将它用于毒物分析.经过二十几年的发展,已形成有机质谱应用的重要分支——法庭科学质谱.这期间,高效毛细管色/质(HRGC/MS)技术、电离技术、离子传输技     

LC/MS/MS法测定婴儿肾结石中三聚氰胺

三聚氰胺,又称蜜胺、2,4,6－三氨基－1,3,5－三嗪,白色单斜棱晶,微溶于水,可溶于甲醇、甲醛、乙酸、热乙二醇、甘油、吡啶等;遇强酸或强碱水溶液水解,氨基逐步被羟基取代,先生成三聚氰胺二酰胺,进一步水解生成三聚氰酸一酰胺,     

Development and validation of a LC–MS/MS method for analysis of vortioxetine in postmortem specimens. First data from an authentic case

Vortioxetine is an antidepressant recently licensed in USA and EU for the treatment of major depressive disorder. Neither fatal case due to overdose nor data about postmortem concentrations on blood or other specimens have been reported. The aims of this study were the development and validation of a method for vortioxetine analysis by Liquid Chromatography Tandem Mass Spectrometry (LC–MS/MS) in postmortem samples and its application in an authentic case. The method was validated and applied on blood, vitreous humor, bile, brain, liver, kidney, and gastric content. After protein precipitation, the supernatant was directly injected into LC–MS/MS. Analysis was carried out by Multiple Reaction Monitoring (MRM) mode. The authentic case concerned a 38 years-old woman, affected by depression, who was found hanged at home. The method determined an acceptable sensitivity, selectivity, linearity, precision, and accuracy for all matrices. No interference was shown for all matrices. The matrices do not significantly reduce the peak intensity of vortioxetine. No carryover was shown. Toxicological analysis of the authentic case showed vortioxetine in blood (234 ng/ml), vitreous humor (10.5 ng/ml), brain (490 ng/g), lung (479 ng/g), liver (3751 ng/g), kidney (798 ng/g), bile (2267 ng/ml) and gastric content (253 ng/ml). Our case suggests that even at blood concentrations of vortioxetine equal to 234 ng/ml, the subject was able to stage and carry out the hanging. Vortioxetine concentrations found in the other cadaveric samples (biological fluids, organs, and gastric content) may be helpful to evaluate further similar comparable cases.     

血中汽油成分的SPME-GC/MS/MS法分析

<正> 汽油的主要成分是低分子量高挥发性的低碳烃和甲苯、二甲苯等烷基苯,以及一些芳香族化合物。在以汽油为助燃剂的火灾现场,往往能从烧死尸体的血液中检测到汽油和其在燃烧分解过程中产生的碳氢化     

GC/MS及UPLC/MS/MS法检验新精神活性物质5-MeO-AMT 1例

正1案例资料某公安局刑警大队查获网络贩毒案件检材1支,为外包装标有"human body lubricant"字样的注射器包装,管内封装有淡绿色凝胶状液体约2m L。要求进行色胺类分析检测。2检验方法2.1仪器和试剂安捷伦7890GC/5975MS型气相色谱-质谱联用仪,岛津LC-20ADXR/AB4500Q TRAP液相色谱-质谱仪。试剂:5-Me O-AMT盐酸盐标准溶液(1.0mg/m L,购自Cerilliant公司),甲醇等试剂均为色谱纯,     

SPE-LC/MS/MS法检验血尿中的茚地普隆

建立了新型非苯二氮唑类镇静催眠药茚地普隆的LC/MS/MS定性定量检测及血、尿等生物检材的自动固相萃取提取方法.实验结果表明,本方法准确、快速、高效,可以满足新型镇静药物茚地普隆的日常检验工作需要.     

SPE-HPLC/MS/MS检验体液中赛拉嗪及DMA

目的建立了一种高效液相色谱串联三重四极杆质谱同时测定体液中赛拉嗪及2,6-二甲基苯胺的分析方法。方法样品经HLB固相萃取柱提取净化,Waters Atlantis d C18色谱柱分离,正电离条件下进行选择监视扫描模式检测。结果方法的回收率为70.5%~79.8%,RSD为8.2%~10.5%。赛拉嗪及2,6-二甲基苯胺在血液和尿液中的检出限分别为0.4 ng/mL和0.3 ng/mL,定量限分别为1.2 ng/mL和1.0 ng/mL。结论本方法灵敏度高、特异性好、重现性好,适用于赛拉嗪中毒的血液和尿液检测。     

SPE-HPLC/MS/MS法检测人唾液中地西泮及其代谢物

目的采用固相萃取-高效液相色谱-串联质谱法(SPE-HPLC/MS/MS)检测人唾液中地西泮及其代谢物。方法采用固相萃取法(SPE)处理唾液,HPLC/MS/MS法检测,MRM记录方式,保留时间和定性离子对定性,内标法和标准曲线法定量。结果地西泮及其代谢物去甲地西泮、去甲羟基西泮、去甲羟基地西泮葡萄糖醛酸苷(OG)、羟基地西泮葡萄糖醛酸苷(TG)的检测限在0.01ng/m L~0.5ng/m L之间,线性范围0.1ng/m L或0.5ng/m L~100ng/m L,回收率为84.9%~106%。口服5mg地西泮后15d内唾液中可检出地西泮及去甲西泮,但检出时间有个体差异,但去甲羟基西泮、TG和OG则不能检出。结论 SPE-HPLC/MS/MS检测法可应用于人唾液中地西泮及其代谢物的检测。人口服常量地西泮后唾液中可检出地西泮和去甲西泮,且检测窗口期较宽,但存在个体差异。     

GC/MS/MS时间编程在火灾现场助燃剂检测中的应用

运用Varian SATURN2000气质联用仪通过GC/MS、GC/MS/MS、时间编程 GC/MS/MS对汽油样品进行分析比对,发现利用时间编程GC/MS/MS,对检测火灾现场残留汽油效果很好,可彻底排除样品中基体的背景干扰,大大提高检测灵敏度;同时对混合助燃剂（汽油+煤油、汽油+柴油）进行了实验探索。     

舒必利中毒的GC/MS和LC/MS联用检验1例

舒必利（Sulpiride）,N-[甲基-（1-乙基-2-吡咯烷基）]-2-甲氧基-5-氨基磺酰基-苯甲酰胺,分子式C15H23N3O4S,分子量341.42,属苯甲酰胺类抗精神病药,自胃肠道吸收,由尿液和粪便中排泄,2h可达血药浓度峰值,血浆半衰期（t1/2）为8～9h。     

Simple and simultaneous quantification of cyanide,ethanol, and 1-propanol in blood by headspace GC–MS/NPD with Deans switch dual detector system

Cyanide is a powerful and rapidly acting poison. In Japan, cyanide poisoning is rare, and regular cyanide testing can be costly and time consuming. In contrast, alcohol analysis is routinely performed in most forensic laboratories. In this study, we attempted to develop a method for the simultaneous quantification of cyanide and alcohols in blood using headspace gas chromatography (HS–GC). As nitrogen-phosphorus detection (NPD) is more sensitive to hydrogen cyanide than mass spectrometry (MS), a Deans switch was used to switch the detectors during a single run. The separation provided by three analytical columns, PoraBOND Q, CP-Sil 5 CB, and HP-INNOWax, was investigated, and PoraBOND Q was selected. The use of HS–GC–MS/NPD with a Deans switch enabled the simple and simultaneous quantification of cyanide, ethanol, and 1-propanol. Eighteen other volatile compounds were detected in the SIM/scan mode of the MS.     

GC/MS法检验罂粟壳

罂粟是提取毒品鸦片、海洛因的毒品原植物,在我国除药用科研外,一律禁止种植[1]。罂粟壳是毒品罂粟的果壳,含30多种生物碱,是国家管制的麻醉药品。若在火锅汤料中加入罂粟壳,或将罂粟壳磨成粉     

氯化汞的GC/MS检验

氯化汞（HgCl2,Mercuric chloride,分子量271.5）俗称升汞,为无色结晶或白色结晶性粉末,熔点277℃,在常温下有轻微挥发性,易溶于水、醇、甘油、乙醚、丙酮、乙酸乙酯等极性溶剂。氯化汞不仅是常用的分析试剂,还可以做消毒防腐剂,但是其毒性大,易于获得,因此在日常生活中自杀、误服和他杀均有案例报道。氯化汞通常被人认为是无机盐,是离子晶体,其实氯化汞为正交晶系,容易升华,     

氯硝柳胺的GC/MS检验

氯硝柳胺名为4′-硝基-2,5-二氯水杨酰苯胺,英文名Niclosamide,文别名灭绦灵,防-67,分子结构见图1。相对分子量327.12,熔点228-232℃,CAS：50-65-7,本品为淡黄色粉末,无味,微溶于乙醇、三氯甲烷或乙醚,在水中几乎不溶[1]。     

微波衍生化和GC/MS/MS技术分析血、尿中的吗啡

目的建立了血、尿等生物检材中海洛因代谢产物吗啡的定性分析方法。方法以丙酸酐为衍生化剂,采用微波衍生化技术结合GC/MS/MS进行分析。结果当CID电压为0.9V时,衍生化物的母离子与子离子碎片信息丰富,碎片为m/e268、324、342。结论此方法科学、准确,灵敏度高,能满足吸食海洛因类、吗啡类毒品人员的生物检材的检验要求。     

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。