若多肽药物的序列中含有组氨酸(His),则需要通过增加第三步操作使氯甲酸异丁酯(Isobutyl Chloroformate, IBCF)与His侧链上的咪唑环衍生化, 减弱其极性而得以分析(图3)。随后,结合同样衍生化处理后的标准品氨基酸在GC-MS上的定位信息以及不同氨基酸特有的碎片离子峰信息[8](表1),通过对比可以准确判断样品肽中相应氨基...
SureQuant 磷酸肽适用性标准品含有疏水特性增加的20种同位素标记磷酸肽的优化混合物,以优化 LC 和监测 LC-MS/MS 系统性能。共同使用时,该等标准品有助于确保良好的仪器性能和对磷酸化事件进行样品评估。 Pricing & Availability Pierce™ LC-MS/MS 系统适用性标准品(7 x 5 混合物) Pierce LC-MS/MS 系统...
Gas chromatography-mass spectrometry (GC-MS) is the most widespread tandem technique in the analytical instrumentation industry. In fact, these systems account for the largest installed base of mass spectrometry instruments. Gas chromatography–mass spectrometry (GC–MS) is the most widespread tandem te...
GC-MS is the analytical technique of choice for nitrosamine determination and, in particular the use of triple quadrupole GC-MS/MS instrumentation has recently become popular for this application due to its high selectivity and sensitivity provided through selective reaction monit...
本应用文章报告了使用珀金埃尔默GCMS 2400™系统以及珀金埃尔默Elite 5MS毛细管柱对76种有机氯、有机氮、有机磷农药和相关异构体进行分析的结果。应用文章中报告的方法是一种GC/MS优化方法,最大限度地减少了问题化合物的共洗脱,符合EPA方法525.23和525.34的要求,并缩短了分析时间。
Advances in Field-Portable Mobile GC/MS Instrumentation. Field Anal. Chem. Tech. 2000, 4, 3-13.Meuzelaar H L C, Dworzanski J P, Arnold N S, McClennen W H, Wager D J, 2000. Advances in field-portable mobile GC/MS instrumentation. Field Analytical Chemistry and Technology, 4: 3-13...
With the addition of the GCMS-TQ8050 NX triple quadrupole GC-MS/MS, Shimadzu offers a comprehensive series of GC-MS and GC-MS/MS instruments for every application. GC Columns GuidebookChromatography GC / GCMS Chemicals Gas Filters Injection Port Septa Liners/O-Rings GC/GCMS ...
instruments (GC-MS, LC-MS, Flash... 环境,动手能力强。具有定性和定量分析经验。会使用分析仪器(GC-MS、LC-MS、快速色谱、制备液相色谱等)和样品制备技术(溶剂萃取...更多…… Senior Firmware Engineer FPGA PerkinElmer 上海市 next generation AAS, UV-Vis, GC, LC, FT-IR instruments... 5 years, ...
标准操作说明书手册规程PyGC-MS.pdf,文件编号:WU-ISCMS-QM 20214641 版本号:V2.0 受控状态: 分发号: 分子科学公共实验平台 质量管理文件 台平验实共公学 热裂解气相色谱质谱联用ThermoFisher 科 Py GC-MS 标准操作规程 子分 2020 年 05 月11 日发布 年月 日实施
However, in this mass range, ions formed by other compounds could appear as isobaric interferences, leading to false positive identifications. At a a mass accuracy setting of 500 mmu (typically achieved in single quadrupole GC-MS instrumentation), isobaric interference from th...