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273943638銀蟲 (初入文壇)
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[求助]
Analysis of aromatic caramel
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High performance liquid chromatography (HPLC) of sugars was performed with a /~-Bondapak-NH 2 PE radial column, fitted to a Waters 6000A instrument, and connected to a differential refractometer Waters R400. 5HMF analysis was achieved also by HPLC with a #-Bondapak C18 PE radial column. Capillary gas chromatography (Hewlett-Packard 5890) was performed in a column (0.25 mm x 50 m) coated with Carbowax 20M (film thickness 0.20/~m). The identification was achieved by mass spectroscopy (Hewlett- Packard MSD 5970--240°C, 70eV). 求大神翻譯 |
鐵蟲 (正式寫手)
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高效液相色譜法用Waters6000A型高效液相色譜儀連接差示折光檢測器(Waters R400),并用μ-Bondapak -NH 2 PE(徑向加壓分段柱)分析糖,5-羥甲基糠醛也可用μ-Bondapak- C18 PE(徑向加壓分段柱)分析, 毛細(xì)管氣相色譜法用毛細(xì)管氣相色譜儀(惠普5890),毛細(xì)管柱Carbowax 20M(膜厚0.2um) (0.25 mm x 50 m)進(jìn)行分析,鑒定用質(zhì)譜儀(惠普MSD5970--240℃,70 eV)進(jìn)行 |
銀蟲 (初入文壇)
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