搜索结果: 1-4 共查到“食品科学技术 MS/MS”相关记录4条 . 查询时间(0.097 秒)
基于超高效液相色谱-串联四极杆飞行时间高分辨质谱(UPLC-Triple TOF-MS/MS)结合多元统计分析技术对不同产地太子参水提物化学组成进行比较分析。通过多级串联质谱分析,对其质谱数据进行峰匹配、峰对齐、滤噪处理等进行特征峰提取;根据一级质谱精确质荷比和二级质谱碎片信息,结合软件数据库搜索及相关文献进行成分鉴别;用PCA和PLS-DA进行数据处理,找出不同产地太子参水提物的差异化学成分。结...
SPE-LC-MS/MS测定快餐纸袋中7种全氟有机物
液相色谱-串联质谱 快餐纸袋 全氟有机物 检测
2016/12/22
建立了快餐纸袋中7种全氟有机物(全氟己酸、全氟庚酸、全氟辛酸、全氟壬酸、全氟十二烷酸、全氟十四烷酸、全氟辛烷磺酸盐)残留的固相萃取-液相色谱串联质谱(SPE-LC-MS/MS)分析方法。样品以1%甲酸-甲醇溶液超声提取,经C18固相萃取小柱净化,以0.1%甲酸乙腈-2mmol/L乙酸铵水溶液为流动相,经C8反相色谱柱分离,采用多反应监测(MRM)负离子模式检测,外标法定量。阴性样品添加实验表明:方...
Phytoestrogens in bovine plasma and milk – LC-MS/MS analysis
isoflavone plasma milk LC-MS/MS
2014/2/27
Phytoestrogens belong to a group of polyphenolic plant metabolites which induce biological responses, based on their structural similarity to 17β-estradiol. In order to investigate the relationship be...
HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds
HPLC-MS/MS isoproturon method development SPE poppy seeds
2014/3/3
While several validated methods have been developed for analysis of phenylurea herbicides in staple food plants, analytical procedures suitable for their quantification in minor crops such as poppy se...