使痛苦
发表于 2025-3-28 15:55:05
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自由职业者
发表于 2025-3-28 21:54:19
Recent Progress in LC/MSzation systems show considerable potential for handling more difficult molecules and in providing improved detection limits. Advances in the use of atmospheric pressure ionization in this area are also described. Finally the utility of LC/MS in the environmental area is reviewed and analysis of test
不法行为
发表于 2025-3-29 00:31:15
Characterisation of Non-Volatile Organics from Water by Pyrolysis-Gaschromatography-Mass Spectrometrm humic acids of various molecular weight fractions characteristic patterns of substituted phenols, cresols, styrenes are obtained. The detection limit is about 10 micrograms, the ratios of the most important peaks are reproducible with standard deviations of 10-–15%..The technique is generally appl
cacophony
发表于 2025-3-29 06:35:34
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modifier
发表于 2025-3-29 10:12:09
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painkillers
发表于 2025-3-29 12:24:01
Richard J. Wenning,Linda B. MartelloBefore giving the floor to the speakers of the sampling session I shall use this opportunity to describe the activities am results of working party I. This will also serve as a state-of-the-art report on sampling.
capsule
发表于 2025-3-29 18:02:57
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指耕作
发表于 2025-3-29 23:07:10
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推延
发表于 2025-3-30 01:57:40
Introductory Remarks on SamplingBefore giving the floor to the speakers of the sampling session I shall use this opportunity to describe the activities am results of working party I. This will also serve as a state-of-the-art report on sampling.
蚀刻
发表于 2025-3-30 08:06:09
New Developments in Selective Detection in Capillary Gas ChromatographyThe importance of “selectivity” in capillary gas chromatography is emphasized. Some recent developments in selective detection are discussed.