1) petroleum ether extraction
石油醚萃取
1.
The volatile oils were obtained with supercritical CO 2,stream distillation and petroleum ether extraction.
采取超临界CO2 萃取、水蒸气蒸馏和有机溶剂石油醚萃取这三种方法提取石香薷挥发油。
2) petroleum ether portion
石油醚萃取部分
1.
Column chromatographic techniques were used for the isolation and purification of the chemical constituents of petroleum ether portion and n-butanol portion from methanol extract of the branches and leaves of hemp, and the structures were elucidated by means of MS and NMR spectroscopies.
从工业大麻甲醇提取物的石油醚萃取部分分离鉴定了14个化合物,分别为β-谷甾醇(1)、豆甾醇(2)、二十二烷酸甲酯(3)、?5,22-豆甾醇乙酸酯(4)、α-菠菜甾醇(5)、表无羁萜醇(6)、无羁萜酮(7)、四氢大麻酚(8)、大麻二酚(9)、大麻二酚酸(10)、cannabielsoic acidA(11)、大麻酚(12)、催叶萝芙叶醇(13)和去氢催叶萝芙叶醇(14)。
3) LYQPE
六月青石油醚萃取物
4) Naphtha extraction
石脑油萃取
5) Petroleum Ether Extraction
石油醚提取
1.
Determination of Arsenic in Edible Oil by Digestion-Petroleum Ether Extraction and Hydride Generation Atomic Fluorescence Spectrometry;
消化-石油醚提取氢化物-原子荧光光谱法测定食用油中砷
2.
)Pok,in this paper the methods of water extraction,ethanol extraction and petroleum ether extraction were used.
采用水提取法、醇提取法和石油醚提取法对小甘菊花的化学成分进行了比较全面的定性实验。
3.
In this research, chemical constituents from the Clematis songarica Bge were obtained were obtained with the method of water extraction, ethanol extraction and petroleum ether extraction.
本实验采用水提取法、醇提取法和石油醚提取法对准噶尔铁线莲的化学成分进行了定性研究。
补充资料:醚萃取物
分子式:
CAS号:
性质:废水或污泥中可用石油醚萃取法测得的油、脂和焦油。醚萃取物对生物处理有害,在吸水井中会沾污电极或浮标系统,还会使水泵发生错误操作。污泥中含有醚萃取物过多,将影响利用污泥作为农肥。通常,初次沉淀池浮渣中的醚萃取物可达45%(质量)。
CAS号:
性质:废水或污泥中可用石油醚萃取法测得的油、脂和焦油。醚萃取物对生物处理有害,在吸水井中会沾污电极或浮标系统,还会使水泵发生错误操作。污泥中含有醚萃取物过多,将影响利用污泥作为农肥。通常,初次沉淀池浮渣中的醚萃取物可达45%(质量)。
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参考词条