1) Circumfluence extraction method of petroleum ether
石油醚回流提取
2) 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。
3) PEE
[英][pi:] [美][pi]
石油醚提取物
1.
Correlation models of Fourier transform near-infrared(FT-NIR) spectrum and four chemical components of Ash,Nicotine,Petroleum ether extracts(PEE),Petroleum ether extracts neutral(PEEN) of representative tobacco samples from 2003-2005 and 2005 were established by using FT-NIR spectrograph.
应用傅立叶变换近红外光谱仪,分别对具代表性的2003~2005年的烤烟样品和2005年烤烟样品建立了近红外光谱与灰分、尼古丁、石油醚提取物、石油醚提取物中性成分4种成分含量间的关系模型,经57个代表性样品预测精度的分析,F检验结果显示:灰分为1。
2.
Content of petroleum ether extract(PEE) in flue-cured tobacco leaves of K326 and Yun 85 varieties,from eight growing areas,three stalk positions,and two kinds of color intensity respectively,were determined and effects of the latter three factors and their interactions on the content of PEE were analyzed.
对K326和云852个品种各8个产地、3个部位和2种颜色的初烤烟叶进行了石油醚提取物含量测定并分析了产地、部位和颜色3个因素及其互作对其含量的影响,结果表明:3个因素均对初烤烟叶石油醚提取物含量有极显著影响;因素间互作因品种而异,K326品种的部位和颜色互作(即等级)、云85品种的产地和部位互作对初烤烟叶石油醚提取物含量有极显著影响;初烤烟叶石油醚提取物含量与纬度极显著或显著正相关;上部烟叶石油醚提取物含量极显著高于中下部位烟叶,中下部位间差异不显著;橘黄色烟的石油醚提取物含量极显著高于柠檬黄色烟。
4) Petroleum ether extract
石油醚提取物
1.
Chemical compositions and antimicrobial activity of petroleum ether extract from Tricholma giganteum Massee;
野生大白口蘑石油醚提取物化学成分分析
2.
Establishment of rapid determination model of petroleum ether extract on tobacco by using near infrared reflectance spectroscopy;
烟草石油醚提取物近红外光谱检测模型的建立
3.
Insecticidal activity of petroleum ether extract and essential oil of Chenopodium ambrosioides L.(Chenopodiaceae) against Anopheles gambiae(Diptera:Culicidae)
土荆芥的石油醚提取物及精油对冈比亚按蚊的杀虫活性(英文)
5) petroleum ether extracts
石油醚提取物
1.
Effects of plant density and the remained leaves number on contents of polyphenols and petroleum ether extracts in flue-cured tobacco leaves;
种植密度及留叶数对延边烤烟多酚及石油醚提取物含量的影响
2.
During 2005~2006,a field experiment was employed to study the relationship between the contents of polyphenols and petroleum ether extracts and adding different organic substances under common measure(CK) using a tobacco(Nicotiana tobacum L.
)品种云烟87为试材,于2005~2006年在河南南阳研究了常规措施(CK)下增施不同的有机物质对烤烟多酚类和石油醚提取物含量的影响。
3.
During 2005-2006,a field experiment was employed to study the relationship between the contents of polyphenols and petroleum ether extracts and different ridging mode and method of applying potassium fertilizer using a tobacco(Nicotiana tobacum L.
)品种云烟87为试材,于2005年～2006年在河南南阳研究了不同成垄方式与分次施钾对烤烟多酚和石油醚提取物含量的影响。
6) PEEN
[英][pi:n] [美][pin]
石油醚提取物中性成分
1.
Correlation models of Fourier transform near-infrared(FT-NIR) spectrum and four chemical components of Ash,Nicotine,Petroleum ether extracts(PEE),Petroleum ether extracts neutral(PEEN) of representative tobacco samples from 2003-2005 and 2005 were established by using FT-NIR spectrograph.
应用傅立叶变换近红外光谱仪,分别对具代表性的2003~2005年的烤烟样品和2005年烤烟样品建立了近红外光谱与灰分、尼古丁、石油醚提取物、石油醚提取物中性成分4种成分含量间的关系模型,经57个代表性样品预测精度的分析,F检验结果显示:灰分为1。
补充资料：石油醚
石油醚是石油的低沸点馏分，为低级烷烃混合物。按沸点不同分为30-60 ℃、 60-90℃、90-120 ℃ 3类。无色透明易挥发液体，有类似乙醚气味．相对密度0.669，沸点60-90 ℃。溶于丙酮、醋酸乙酯、苯、氯仿、乙醚等，不溶于水。易燃。无毒。空气中最高容许浓度为0.03％。
用作快干溶剂和稀释剂。贮存于阴凉、通风、干燥的库房内，远离火种、热源。
用作快干溶剂和稀释剂。贮存于阴凉、通风、干燥的库房内，远离火种、热源。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条