液相色谱-串联质谱技术在食品中抗菌药物残留分析中的应用

对液相色谱-串联质谱技术在食品中常用抗菌药物残留分析中的应用进展进行了综述,重点论述了近年来该技术在几种常用抗菌药物如β-内酰胺类、四环素类、大环内脂类、氨基糖苷类、酰胺醇类、磺胺类、喹诺酮类和硝基呋喃类的残留分析中的应用。同时,介绍了食品中多种类别抗菌药物残留同时检测的液相色谱-串联质谱方法,提出四极杆串联飞行时间质谱在多类别抗菌药物残留同时分析中具有广阔的应用前景,并对液相色谱-串联质谱技术在食品中抗菌药物残留分析领域未来的发展趋势进行了展望。     

高效液相色谱-三重四极杆-离子阱串联质谱法在食品分析中的应用

三重四极杆-离子阱串联质谱(quadruple/linear ion trap mass spectrometry, Q-Trap MS)不仅具有一般三重四极杆质谱的特征离子提取功能,而且具有线性离子阱的离子捕获、富集等功能,可以大大提高复杂基质中的检测选择性和灵敏度; Q-Trap MS技术独特的多反应监测-信息依赖性采集-增强子离子扫描模式可以同时获得多反应监测数据以及感兴趣的二级全扫描质谱图,通过自建谱库比对可进行未知物的筛查确证及化合物结构分析。因此Q-Trap MS技术在食品科学领域发挥着越来越重要的作用。本文主要对高效液相色谱-三重四极杆-离子阱串联质谱法在食品痕量分析、高通量快速筛查、化合物确证、降低基质效应及化合物结构分析方面的应用进行了概述,以期为Q-Trap MS技术在食品中的进一步发展应用提供参考。     

液相色谱-串联质谱技术在食品药品安全分析领域的应用

液相色谱(liquid chromatogram,LC)在分离能力、灵敏度和专属性等方面有着巨大优势,与质谱(mass spectrometry,MS)联用后可以展现出强大的定性、定量分析能力,并已经在农兽药残留、非法添加、有毒物质研究等各领域得到广泛应用。本文对液相色谱-串联质谱(liquid chromatography-tandem mass spectrometry,LC-MS/MS)技术在食品相关国家标准,如农残、兽残、食品接触类材料,及《中华人民共和国药典(2015版)》中的应用进行了简单介绍,并介绍了本部门在食品安全、药品安全、食品接触类塑料制品残留物分析等领域取得的工作进展。     

液相色谱-串联质谱法测定调味品中污染物的研究进展

随着人们对调味品健康、营养、安全需求的提高，调味品中的污染物问题受到越来越多的关注。液相色谱-串联质谱(LC-MS/MS)技术具有灵敏度高、准确性好、选择性强等优点，在调味品安全检测方面发挥着重要作用。文章对近5年来LC-MS/MS技术在调味品中污染物检测方面的研究进展进行了综述，重点讨论了液相色谱-低分辨串联质谱及液相色谱-高分辨串联质谱在测定调味品中真菌毒素、发酵副产物、非法添加物方面的应用，并对其未来发展趋势进行了展望，提出将具有定量优势的低分辨串联质谱与具有定性优势的高分辨串联质谱相结合的必要性。     

QuEChERS结合气相色谱-三重四级杆串联质谱法测定动植物混合型食品中多种农药残留

建立了气相色谱串联质谱(GC-MS/MS)定量和定性检测动植物混合型食品中7种农药残留量的方法。样品中的待测农药组分经乙腈-乙酸乙酯混合溶剂(85∶15,v/v)提取,采用改进的Qu ECh ERS法为净化方法,以外标法进行定量,以气相色谱-三重四级杆串联质谱(GC-MS/MS)多反应监测模式(MRM)检测。在动植物混合性食品基质中,以该方法检测的大部分农药的线性范围为0.01μg/L~0.50μg/L,检测低限最低可以达到1.0μg/kg,添加回收率为67.2%~118.6%,相对标准偏差(RSD)为5.2%~16.3%(n=6)。该方法的准确性高、重复性好、操作简便,适用于动植物混合型食品中多种农药残留同时测定。     

LC-MS/MS方法分析烟草中的38种农药残留

利用高效液相色谱串联质谱(LC-MS/MS)技术快速分析烟草中的38种有机磷、杂环和酰胺类农药残留.采用乙腈振荡提取烟叶中的各农药残留,用PSA吸附剂净化.此前处理方法简便快速、成本低、环保.38种农药在0.25μg/g、0.5 μg/g和1.0μg/g三个加标水平的平均回收率为60.15％-116.21％,相对标准偏差为0.57％-19.25％,可为当前烟草中农药多残留检测的试验研究提供参考.     

基于QuEChERS与UPLC-Triple-TOF-MS相结合的水稻中溴氰菊酯的检测

对Qu ECh ERS前处理与超高效液相色谱-三重四级杆飞行时间串联质谱(UPLC-Triple-TOFMS)相结合的方法检测水稻中溴氰菊酯残留的应用进行了探索。检测发现溴氰菊酯在(0.01~5.0)mg/L浓度范围内呈良好的线性关系,线性相关系数为0.9999,回收率在90.14%~99.86%范围之间,方法的相对标准偏差(RSD)小于5%。该前处理方法具有回收率高、分析范围广、精确度和准确度高、操作简便且分析速度快、污染小等优点。并比较了该法与气相色谱-质谱法(GC-MS)检测溴氰菊酯残留结果,结果显示超高效液相色谱-三重四级杆飞行时间串联质谱联法在检测分析水稻中溴氰菊酯农药残留具有一定的优势。     

QuEChERs-超高效液相色谱-串联质谱检测甘蔗中15种有机磷农药残留量的方法研究

建立了QuEChERs-超高效液相色谱-串联质谱(QuEChERs-UPLC-MS/MS)同时测定甘蔗中15种有机磷农药残留方法.甘蔗样品经乙腈提取,采用QuEChERs方法净化,采用LC-MS/MS进行分析检测,在多反应检测反应模式下(MRM)下,用外标法进行定量,线性良好(r2>0.999),检出限为0.01～0....     

通过式固相萃取与液相色谱串联质谱和气相色谱串联质谱结合测定加热卷烟中多种农药残留

[目的]实现加热卷烟中多种农药残留的测定.[方法]样品经乙腈提取,以PRiME HLB通过式固相萃取柱净化后,分别以液相色谱-串联质谱(LC-MS/MS)和气相色谱-串联质谱(GC-MS/MS)分析.[结果]①PRiME HLB通过式固相萃取净化效率高,操作简便.②在高、中、低三个不同添加浓度水平下,所有分析物的回收率...     

气质质联用法测定水产品中50种农药残留量

建立气相色谱/串联三重四级杆质谱同时测定鲑鱼、对虾中50种农药残留的方法。对三重四级杆质谱(MS/MS)检测参数及样品前处理方式进行优化。样品经乙腈提取后,冷冻、离心,Qu ECh ERS方法净化,采用气相色谱/串联三重四级杆质谱仪检测,50种农药在线性范围内均呈现良好的线性关系,线性系数大于0.99。本检测方法的检出限(LOD)为0.001 mg/kg~0.005 mg/kg,方法验证试验结果表明,该类化合物的平均回收率在65%~118%之间,相对标准偏差(RSD)在0.74%~12.3%之间。本方法重现性好,精密度高,操作简单,适用于鲑鱼、对虾等水产品中多种农药残留的检测。     

液质联用技术在兽药多类别、多组分残留 分析中的应用研究进展

兽药残留分析是食品安全实验室最广泛开展的分析项目之一,液质联用技术已成为兽药残留分析的关键技术和研究手段。除进行少数目标组分的定量测定外,多类别、多组分兽药的同时同步分析成为近年来兽药残留分析的发展趋势。液相色谱串联三级四极杆质谱和液相色谱串联高分辨质谱在兽药多残留分析中各有其特点和优势,各国研究者在牛奶、动物组织等动物源性食品中开展了抗生素等多残留的检测研究与应用工作。本文就目前液质联用技术及其在兽药多残留分析中的应用做一概述。     

低温下采用快速液相色谱-质谱联用法分析包装食品中UV油墨光引发剂的迁移

A fast method of liquid chromatography coupled to tandem mass spectrometry(LC-MS/MS) was developed for the analysis of eleven UV ink photoinitiators in packaged food.Chromatographic separation was achieved in a pentafluorophenylpropyl (PFPP) column at 5X2 and acetonitrile:25mM formic acid-ammonium formate(pH 2.7) in gradient elution. To reduce sample treatment,a QuEChERS(quick,easy,cheap,effective,rugged and safe) method for the extraction and clean-up of UV photoinitiators in packaged foods was evaluated.Triple quadrupole working in H-SRM on Ql mode was used for both quantitation and confirmation purposes and the most intense and selective transitions were chosen.Quality parameters of the developed QuEChERS LC-MS/MS method were established and applied for the analysis of photoinitiators in food packaged at ng/kg levels.     

应用液相色谱―串联质谱仪和四极杆―轨道阱高分辨质谱仪检测饲料中克伦普罗干扰的原因分析与确证技术研究

目的 探究液相色谱―串联质谱仪(liquid chromatography-tandem mass spectrometer, LC-MS/MS)检测饲料中克伦普罗时, 环天冬氨酰苯丙氨酸对试验干扰的原因, 在此基础上探究出应用LC-MS/MS分析的确证技术与方法。方法 应用四极杆―轨道阱高分辨质谱仪和LC-MS/MS对环天冬氨酰苯丙氨酸、克伦普罗对照品以及含有环天冬氨酰苯丙氨酸的饲料样品进行分析。结果 饲料中含有环天冬氨酰苯丙氨酸对克伦普罗的检测干扰的原因为二者母离子及2个子离子的质荷比很接近, 且二者离子丰度比也很接近。应用LC-MS/MS分析的确证技术与方法为梯度碎裂离子片段依次匹配比较法。结论 应用LC-MS/MS检测会遇到假阳性的问题, 这是串联质谱结构与方法原理决定的; 建议调整克伦普罗的2个子离子为263.07>168.04, 263.07>132.06; 用LC-MS的梯度碎裂离子片段依次匹配比较法准确、实用。     

高效液相色谱-Q-Exactive四极杆/静电场轨道阱高分辨质谱在食品药品安全分析中的应用概述

食品药品基质复杂,食药安全分析需要更加准确可靠和方便快捷的检测方法和技术。Q-Exactive-四极杆/静电场轨道阱高分辨质谱的出现,使得液相色谱-质谱联用技术拥有更高的分辨率和质量精度,分析速度更快,适用于各种基质的食品药品的安全分析。本文介绍了高效液相色谱-Q-Exactive-四极杆/静电场轨道阱高分辨质谱技术的特点,根据样品的基质进行分类,对近年来高效液相色谱-Q-Exactive-四极杆/静电场轨道阱高分辨质谱技术在食品药品安全分析中的应用进行了概述。     

UHPLC–MS/MS highly sensitive determination of aflatoxins,the aflatoxin metabolite M1 and ochratoxin A in baby food and milk

In this work, a method has been developed for the ultrasensitive and selective determination of various regulated mycotoxins (aflatoxins G1, G2, B1, B2, M1, and ochratoxin A) in baby food commodities and milk, using ultra high pressure liquid chromatography (UHPLC) coupled to tandem mass spectrometry (MS/MS). The high sensitivity required for these compounds made necessary the application of a pre-concentration step based on solid phase extraction with immunoaffinity columns, after sample extraction with acetonitrile:water (80:20). Thanks to the fast high-resolution of UHPLC and the enhanced selectivity obtained with the triple quadrupole mass analyser in SRM mode, the chromatographic separation was achieved in only 4 min.     

Determination of fungicide residues in baby food by liquid chromatography-ion trap tandem mass spectrometry

Current European Commission Directives on foods for infants and young children places emphasis on the control of pesticide residues at levels below 10 μg kg(-1). In the present work, a liquid chromatography electrospray ionisation ion trap tandem mass spectrometry (LC-Ion Trap-MS/MS) has been developed for the multiresidue of 10 multiclass fungicides (carbendazim, thiabendazole, imazalil, tridemorph, triadimefon, bitertanol, prochloraz, flutriafol, myclobutanil and diphenylamine) in fruit-based baby food. The developed method is based on a simple sample treatment (QuEChERS), which consists of a liquid-liquid extraction using acetonitrile, followed by a clean-up step based on dispersive solid-phase extraction with primary secondary amine (PSA). Subsequent identification and quantitation was accomplished by liquid chromatography/electrospray tandem mass spectrometry using an ion-trap mass spectrometer in the product ion scan MS/MS mode. Matrix effects were evaluated in LC-MS and LC-MS/MS mode experiments, obtaining a reduction of these effects when working in MS/MS mode for most of the analytes. Limits of detection (LOD) were between 0.5 and 3.0 μg kg(-1) depending on the pesticide studied, all being within European Union regulations for baby food. Finally, the proposed method was applied to 25 baby food samples obtained from local supermarkets. Imazalil, thiabendazole and carbendazim were detected in the studied samples. However, none of the samples tested were found to be upper the EU standard.     

Comparative study of low- versus high-resolution liquid chromatography-mass spectrometric strategies for measuring perfluorinated contaminants in fish

Perfluorinated compounds (PFCs) are usually monitored by high-performance liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) on triple quadrupole instruments. Although not yet widely implemented in the field, high-resolution mass spectrometry (HRMS) today appears as a valuable alternative for these halogenated chemicals due to their significant mass defect. Indeed, this second approach offers a way to cope with particular matrix effects caused by co-eluting and isobaric interferences affecting the measurement of some PFCs in fish. The present study compares three different LC-MS-related instruments and various signal acquisition modes, from low-resolution full-scan and selected ion-monitoring (SIM) mode on a triple quadrupole (QqQ) instrument to high-resolution full-scan or product ion-scan mode on orbital trap (LTQ-Orbitrap) or quadrupole-time-of-flight (Q-TOF) devices. Performances are compared for seven model compounds belonging to seven PFCs subclasses: perfluoralkylsulfonate, perfluoroalkylcarboxylate, perfluoroalkylsulfinate, perfluoroalkyl-sulfonamide, fluorotelomer saturated acid, fluorotelomer unsaturated acid and perfluoroalkylphosphonic acid. Low-resolution MS/MS was found to be unsurprisingly reliable for extended multi-residue monitoring. However, the high stability of PFCs leads to a relatively poor and non-specific fragmentation pathway in MS/MS. In addition, biliary acid-interfering compounds (e.g. taurochenodeoxycholic acid), which where encountered in the present case in fish samples but that may be present in other biological samples, were found particularly disturbing in low-resolution MS/MS. Indeed, these interferences presented the same retention time and diagnostic signals as PFOS, leading to a possible overestimation of the PFOS quantification in LC-MS/MS. On the other hand, high-resolution MS and MS/MS (LTQ-Orbitrap and Q-TOF) provided better results in terms of signal specificity and sensitivity. For instance, the estimated limits of detection (LOD) reached for PFOS on QqQ, Q-TOF and LTQ-Orbitrap instruments were 3.8, 0.7 and 0.5 pg injected, respectively.     

辛辣食物中农药残留检测方法研究- 第1部分: 研究进展

辛辣类食物作为显著味道特色的食物和调味品,普遍为世界各国人们所喜爱。这类作物在种植过程中难免使用农药,其特殊的化学成分会对农药残留检测产生严重干扰。本文对国内外辛辣食物中农药残留检测的净化方法和检测手段进行综述,提取与净化方法主要有固相萃取法、分散固相萃取法、分子印迹固相萃取法、凝胶净化法、微波热处理法、顶空固相微萃取法、搅拌棒萃取法等,分析方法有气相色谱法、气相色谱-质谱法、液相色谱法、液相色谱-质谱法、激光拉曼光谱法等。本文为今后辛辣食物中农药残留分析研究提供参考。     

液相色谱-串联质谱基质效应及其消除方法

综合近年来国内外进行液相色谱-串联质谱方法开发中关于基质效应的相关报道,重点介绍了液相色谱-串联质谱基质效应的消除方法,主要包括:选择合适的样品前处理方法;选择最佳的色谱分离条件;优化的质谱分析参数;使用恰当的内标;采用基质标准溶液校正。这些方法的应用,可有效改善基质效应的影响,优化液相色谱-串联质谱检测方法。