丰满人妻一区二区三区视频53_久久久97人妻无码精品蜜桃_精品人妻无码专区在中文字幕_蜜臀久久99精品久久久久久小说
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國產(chǎn)Alumina-A固相萃取小柱
Alumina-A是表面呈酸性(pH=4.5)的氧化鋁固相萃取吸附劑,粒度為50-200 ?m??勺鳛閺姌O性吸附劑和中等陽(yáng)離子交換劑。
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產(chǎn)品特點(diǎn)
1.
酸性、中等極性、極性目標化合物。
基質(zhì)
氧化鋁
作用基團
鋁羥基
平均粒徑
50-200 ?m
保留機理
正相
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丰满人妻一区二区三区视频53_久久久97人妻无码精品蜜桃_精品人妻无码专区在中文字幕_蜜臀久久99精品久久久久久小说