acetylcholine
发表于 2025-3-23 12:19:09
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ITCH
发表于 2025-3-23 16:14:25
Characterisation of Non-Volatile Organics from Water by Pyrolysis-Gaschromatography-Mass Spectrometrhe most important classes in the river Rhine. The combination of pyrolysis gas chromatography mass spectrometry is applied to the characterisation of these non-volatile compounds. The material is isolated from water and pyrolysed in a special inlet system for 10 sec. at 600/800°C. The pyrolysis prod
Lymphocyte
发表于 2025-3-23 20:16:38
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影响深远
发表于 2025-3-23 22:41:53
Analysis of Sulphonic Acids and Other Ionic Organic Compounds Using Reversed-Phase HPLColar organic compounds eg polynuclear aromatic hydrocarbons. The ionisation of sulphonated organic compounds must be suppressed either by the use of an ion-pairing reagent, by rendering the eluted solvent acidic, or by the use of more polar reversed-phase packings. The techniques employed for ionic
无孔
发表于 2025-3-24 06:17:40
https://doi.org/10.1057/9780230379275-ion reagents are used only when other techniques fail. Satisfactory separations have been achieved using a styrene-divinylbenzene copolymer reversed-phase medium in the absence of either paired-ion reagents or buffer solutions.
intellect
发表于 2025-3-24 07:14:34
Analysis of Sulphonic Acids and Other Ionic Organic Compounds Using Reversed-Phase HPLC-ion reagents are used only when other techniques fail. Satisfactory separations have been achieved using a styrene-divinylbenzene copolymer reversed-phase medium in the absence of either paired-ion reagents or buffer solutions.
Limited
发表于 2025-3-24 12:01:17
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inventory
发表于 2025-3-24 17:51:04
Ellen K. Silbergeld,Peter L. deFur contactor on macroporous resins or other adsorbents for subsequent elution followed by GC-MS analysis or biological assays. These devices enable composite samples of average concentration to be obtained over one or several days.
卡死偷电
发表于 2025-3-24 21:03:43
‘Around-the-Table’ Negotiationshniques are combined with the method of collisionally activated decomposition (CAD) in a tandem mass spectrometer a direct mixture analysis is possible. It will be demonstrated that this approach can be used to identify surfactants in surface water.
有常识
发表于 2025-3-25 01:38:42
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