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大气颗粒物中有机组分污染特征的研究，对我国城市空气质量监控与治理有重要意义。应用中流量PM2.5采样器采集2003年9月~2004年7月北京市大气颗粒物样品，建立了同时测定PM2.5中三类有机组分的实验方法。采用14%BF3/CH3OH溶液为有机酸衍生化试剂，并确定有机酸最佳衍生化反应温度和时间分别为40℃、45min；采用自填SPE硅胶柱，实现了正构烷烃、多环芳烃和有机酸酯的完全分离，三类组分回...
Na3Fe(C2O4)3 5H2O的热解过程和FAB-MS断裂规律
原位红外光谱 热解 热重-差热分析 质谱
2009/12/10
Na3Fe(C2O4)3 5H2O的热解过程和FAB-MS断裂规律。
用MS-PSR技术研究甲烷部分氧化反应的引发过程
甲烷部分氧化 合成气 流化床 Ni催化剂
2009/12/8
借助质谱程序升温表面反应(MSTPSR)技术研究了NiO/悛睞l2O3、700 ℃ H2还原 后的Ni0/悛睞l2O3和添加Pt的NiO/悛睞l2O3催化剂(分别记为NiO、Ni0和PtNiO)上甲烷 部分氧化反应(POM)的引发行为.结果表明，在CH4＋O2气氛下NiO和Ni0具有相同的引发行为 ， Ni0在反应气氛下首先被氧化为NiO.在低于760 ℃时， CH4和O2在NiO上发生深度...
采用酸性溶剂萃取卷烟主流烟气剑桥滤片捕集物,目标分析物经固相萃取小柱分离富集后,应用气质联用仪进行定量分析,从而建立卷烟主流烟气中4种杂环胺的测定方法.4种待测物的检出限在0.14～0.24ng/支之间,样品加标回收率在79.7%至86.2%之间.工作曲线的相关系数均大于0.997.应用该方法测定了国内在售的10个重点品牌卷烟样品,结果显示1-甲基-吡啶并[3,4-b]吲哚(Harman)、9H-...
中医经典名方当归芍药散(DSS)在古代用于治疗痛经等妇科疾病，现代广泛用于痛经、老年痴呆、更年期综合征和黄褐斑等40多种疾病的治疗。在筛选该方镇痛活性部位的研究中，发现DSS中的A-N-30部位具有镇痛活性，从中分离得到2个新化合物（1）和（2），并鉴定了它们的化学结构。为进一步对2个新化合物进行活性和结构修饰等研究，需确定2个新化合物的来源，然后大量制备。采用高效液相色谱-串联质谱（HPLC-M...
An high-performance liquid chromatography/tandem mass spectrometry (HPLC-MS/MS) method for the determination of vinorelbine was presented, and the pharmacokinetics of the aqueous solution and lipid mi...
HPLC-MS/MS法同时检测牛奶中17种β2-受体激动剂和β-受体阻滞剂残留
milk β2-agonists β-blockers high performance liquid chromatography tandem mass spectrometry
2010/3/30
A method for the determination of 17 β2-agonists and β-blockers in milk was developed by solid-phase extraction(SPE) and high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS). Th...
A rapid, sensitive and selective method for the determination of taxifolin in Beagle dog plasma was described by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Resveratr...
Protein tyrosine phosphatase 1B(PTP 1B) which contains a catalytic cysteine plays important role in the negative regulating of insulin signaling, and it has been investigated as a therapeutic target i...
LC-MS/MS法测定犬血浆中脂质纳米粒10-羟基喜树碱浓度
10-hydroxycamptothecin liquid chromatographic-tandem mass spectrometry lipid nanoparticl non-clinical pharmacokinetics
2010/3/30
10-hydroxycamptothecin，camptothecin analogue，is an antitumor agent that targets the nuclear enzyme topoisomerase I. 10-hydroxycamptothecin is injected by sodium salt form in clinic, and myelosuppressi...
LC-MS/MS法测定大鼠血浆中MTP-131
MTP-131 small peptide LC-MS/MS
2010/3/30
MTP-131 is a tetrapeptide under development for treating diabetes. MTP-131 contains a lysine, an arginine, a phenylalanine and a modified tyrosine in its structure. The quantification of MTP-131 in ra...
建立液相色谱质谱联用法测定人全血中环孢素A浓度，选用Kromasil-C18色谱柱（20 mm×4.6 mm×5 μm），以甲醇1 mmol•L-1甲酸铵溶液为流动相，采用梯度洗脱进行分离，样品用沉淀蛋白法处理后进样，流速1.1 mL•min-1，柱温60 ℃，进样量20 μL。选用3200 QTrap型三重四极杆串联质谱仪的多重反应监测（MRM）扫描方式进行检测。环孢素...
A sensitive liquid chromatography-electrospray ionization-tandem mass spectrometric(LC-MS/MS) method for the determination of CPRC-127 in human plasma was developed and validated. The plasma was extra...
LC-MS/MS法定量测定人血浆中TF及其代谢产物M1，M2
TF M1 M2 LC-MS/MS quantitation
2010/3/30
A sensitive liquid chromatography-electrospray ionization-tandem mass spectrometric(LC-MS/MS) method for the simultaneous determination of TF and its metabolites M1 and M2 in human plasma were develop...
A headspace-GC/MS method for the determination of dimethylcyclosiloxane in enameled wires was developed. The dimethylcyclosiloxane such as hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, dec...