搜索结果: 1-15 共查到“分析化学 LC/MS”相关记录27条 . 查询时间(0.342 秒)
建立液相色谱-串联质谱(LC-MS/MS)法同时测定半夏厚朴汤中厚朴酚与和厚朴酚在大鼠血浆中的浓度。采用Waters XTerra C18色谱柱，以V(乙腈)∶V(0.1 mmol/L乙酸铵)=75∶25的溶液为流动相，流速为0.2 mL/min，进样量5 μL，等度洗脱方式进行分离，检测模式为负离子条件下的选择性反应监测。厚朴酚与和厚朴酚在1~1 000 μg/L浓度范围内线性关系良好，定量下限...
Semi-LC/MS技术快速定量分析黄芪样品中黄芪甲苷含量
黄芪甲苷 半高效液相色谱-质谱串联技术 多反应监测 定量分析
2013/9/23
为了测定黄芪中的黄芪甲苷含量，应用半高效液相色谱-质谱串联技术（Semi-LC/MS），以薯蓣皂苷为内标化合物，仅用一段色谱保护柱分离掉大部分干扰性成分，同时使目标化合物富集，采用Waters公司的多反应监测（MRM）扫描模式检测。结果表明：黄芪甲苷在2.85~57.0 mg/L的范围内线性关系良好，稳定性和重复性实验RSD<3%，样品回收率达98.9%。Semi-LC/MS方法可以对黄芪样品中黄...
LC-MS/MS法测定人血浆中氨氯地平的浓度
高效液相色谱-质谱联用法 氨氯地平 人血浆 药代动力学
2013/9/23
为了快速、准确地检测人血浆中氨氯地平的浓度，建立了高效液相色谱-质谱联用检测方法。选用Eclipse XDB-C18色谱柱，以甲醇-1 mM乙酸铵溶液-0.1%甲酸溶液为流动相，采用梯度洗脱方法进行分离，样品经乙腈沉淀后进样，选用3200Q-trap型质谱仪的多重反应监测（MRM）扫描方式进行检测。氨氯地平线性范围为0.100~20.000 μg/L，定量下限为0.100 μg/L 。准确度与精密...
LC-MS/MS法测定人血浆中辛伐他汀浓度
高效液相色谱-质谱联用法 人血浆 辛伐他汀 药代动力学
2013/9/24
为了建立高效液相色谱-质谱联用法测定人血浆中辛伐他汀浓度的方法，选用Ultimate XB-C18柱（2.1 m×100 mm，3 μm），以V（甲醇）：V（乙腈）∶V（2.5 mmol/L乙酸铵）=45∶50∶5的溶液为流动相，样品用沉淀蛋白法处理后进样，流速为0.3 mL/min。选用Finnigan TSQ Quantum Access液质联用（LC-MS/MS）分析仪的选择反应监测（SR...
建立液相色谱-质谱（LC-MS/MS）监测环孢素A(CsA)血药浓度的方法，并与荧光偏振法（TDx）监测结果比较，进行统计学分析，考察2种方法的相关性。LC-MS/MS方法测定CsA血药浓度平均为（99.9±62.7） μg/L，小于TDx法测定的浓度平均值（199.7±129.1） μg/L，2种监测方法测定结果相关系数r平均为0.929，相关性较好，LC-MS/MS法和TDx法自身配对比值平均...
吸毒者尿样中3-β-D-葡萄糖醛酸吗啡、吗啡、O6-单乙酰吗啡和可待因的LC-MS/MS分析
液相色谱-串联质谱法 3-β-D-葡萄糖醛酸吗啡 吗啡 O6-单乙酰吗啡 可待因 固相萃取 尿样
2010/9/16
建立吸毒者尿样中3-β-D-葡萄糖醛酸吗啡、吗啡、O6-单乙酰吗啡、可待因的液相色谱-串联质谱分析方法。尿样经固相萃取后，用C18液相柱分离，以含甲酸铵和甲酸的水、乙腈为流动相等度洗脱，采用电喷雾电离（ESI+），多反应监测（MRM）模式检测目标化合物。以化合物的保留时间、2对母离子/子离子对定性，尿样中3-β-D-葡萄糖醛酸吗啡的检测限为0.5μg•L-1，吗啡、O6-单乙酰吗啡、可...
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...
鸡蛋中三聚氰胺的磁性强阳离子交换树脂吸附—LC-MS/MS快速分析
magnetic strong cation exchange resin melamine egg sample liquid chromatography-tandem mass spectrometry
2010/3/30
In the work, magnetic strong cation exchange(MSCX) resins were successfully prepared and applied to the extraction of melamine(MEL) from egg samples. The extraction procedure was carried out in a sing...
A simple and rapid method for the analysis of 12 bile acids was developed based on LC/MS. Quantification was finished in 7 min. For different bile acids, the detection limits ranged from 0.006 1 to 0....
酸枣仁化学成分的LC/MS分析
LC/MS Spinosa Ziziphphus Jujuba
2010/3/30
Study on Chemical Constituents of ammonia saturated with n-butanol from Spinosa Ziziphphus Jujuba by LC/MS, spinosin and 6’’’-feruloylspinosin was identified.with information of mass spectrometry frag...