Results 111 to 120 of about 93,957 (171)
[Determination of 40 carbonyl compounds in ambient air by high performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]
Li GH +8 more
europepmc +1 more source
[Safety study of resin-based dental materials using gas chromatography-mass spectrometry techniques]. [PDF]
Li Y, Zeng Y, Du Z, Ren G.
europepmc +1 more source
本发明公开了一种微型质谱中样品直接进样在线富集的膜进样装置,采用无孔致密聚二甲基硅氧烷片状膜,能够有效限制进入质谱的气体量,同时可以做为质谱和大气的中间接口。装置中采用了单层超薄膜对样品进行快速富集,膜后具有一真空差分腔体,该腔体用来进行富集样品的缓冲和存储。该腔体处于低真空条件下,所以允许加大膜的面积,从而加大样品与膜的接触面积,富集效率提高。差分口处安装有电磁阀,当要进行气体富集时关闭抽气口,气体经过膜进入缓冲腔体进行富集。样品分析完毕后开通电磁阀门进行差分抽气,把富集后的样品迅速抽出防止记忆效应 ...
侯可勇, 李海洋
core
[Determination of 65 synthetic cannabinoids in whole blood by QuEChERS-ultra performance liquid chromatography- mass spectrometry]. [PDF]
Xi Z +6 more
europepmc +1 more source
Transtext(e)s Transcultures è,è - Journal of Global Cultural Studies
openaire +1 more source
[Native mass spectrometry and ultraviolet photodissociation reveal conformation-selectivity of zinc ion to α-synuclein]. [PDF]
Qin H +5 more
europepmc +1 more source
采用高效液相色谱 质谱联用方法分析了甘草 (Glycyrrhizauralensis)中的化学成分。通过高效液相色谱可将三萜、黄酮及香豆素等 5 0余种化学成分较好的分离。根据紫外光谱可大致判断其化合物类型 ,由电喷雾质谱得到各成分的分子量 ,再由串联质谱获得进一步的结构信息 ,进而推测出其中 2 2个主要成分的可能结构。它们分别是 :葡糖基甘草甙、异光果甘草甙、夏拂托甙、甘草素 4′ 芹糖甙 ,甘草甙 ,6′ 乙酰甘草甙 ,异佛来心甙 ,异甘草素葡萄糖芹菜甙 ,甘草糖甙A ,甘草糖甙B ,甘草素 ,3
彭树林 +5 more
core
[Rapid determination of venetoclax in plasma by ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]
Zhu Y, Ma XL, Yu SL, Qiu L.
europepmc +1 more source

