搜索结果: 1-15 共查到“化学 LC-MS”相关记录27条 . 查询时间(0.218 秒)
LC-MS/MS法研究厚朴酚与和厚朴酚在大鼠体内的药动学行为
半夏厚朴汤 厚朴酚 和厚朴酚 液相色谱-串联质谱 药代动力学
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2013/9/22
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
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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
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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
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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...
LC-MS/MS和荧光偏振法监测环孢素A血药浓度的相关性研究
环孢素A 高效液相色谱-质谱联用法 荧光偏振分析法 日常血药浓度监测
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2013/9/24
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
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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...
LC/MS研究有机金属钌抗肿瘤化合物与蛋白酪氨酸磷酸酶模型化合物的相互作用
PTP1B chemical mimic ruthenium LC/MS
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2010/3/30
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
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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
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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...
LC-MS/MS法测定人全血中环孢素A浓度及环孢素眼用乳剂健康人体药代动力学研究
液相色谱-质谱联用法 环孢素A 药代动力学
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2010/3/30
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...
LC-MS/MS法定量测定人血浆中CPRC-127血药浓度
CPRC-127 LC-MS/MS quantitation
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2010/3/30
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
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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
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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...
基于LC/MS的血清胆汁酸代谢轮廓快速定量方法及其在宫颈癌研究中的应用
LC/MS metabolites profiling bile acids quantification
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2010/3/30
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
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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...