Mawkish
发表于 2025-3-23 09:52:11
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引起
发表于 2025-3-23 14:44:56
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共和国
发表于 2025-3-23 18:13:09
Determination of Elements and Functional Groups,e. Even contact with traces of oxygen will alter the composition of the sample during analysis and vitiate the analytical results obtained. A sampling procedure for organoaluminium compounds is illustrated in Figure 1.
愚蠢人
发表于 2025-3-24 02:13:46
Spectroscopic Techniques: Visible and Ultraviolet Spectroscopy,shown in Figure 42. In Figure 43 are shown the spectra of isoquinoline alone (curve 1), mixtures of isoquinoline and diethylaluminium ethoxide (curve 2), and isoquinoline and triethylaluminium (curve 3). Comparison of curves 1 and 2 shows that the spectrum of diethylaluminium ethoxide remains unchan
流眼泪
发表于 2025-3-24 05:47:44
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多骨
发表于 2025-3-24 08:45:39
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吹牛大王
发表于 2025-3-24 14:01:21
Gas Chromatography,ecial sample injector. They purge the sample with helium carrier gas on a 1 metre column of Chromosorb W containing 7.5% of paraffin wax mixed with triphenylamine (17:3) at a column temperature of 73 – 165°C. A thermistor detector was used by these workers.
Limpid
发表于 2025-3-24 17:19:51
Chromatography of Metal Chelates,omatographic separations. For gas chromatographic separation it would be necessary for the derivatives to be sufficiently volatile to Chromatograph and yet be stable enough not to undergo thermal decomposition during the separation. For liquid chromatographic methods derivative volatility would not
jealousy
发表于 2025-3-24 22:49:27
Organometallic Compounds in the Environment,r supplies, the oceans and also sedimentary matter, vegetation and animal life in inland waterways and the oceans. Some of the more volatile organometallic compounds are found in air. Organometallic compounds are also found in plant material, crops and biological materials such as fish, animal and h
Lament
发表于 2025-3-25 01:25:27
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