1) ultrasonic extraction circularly
超声循环萃取
2) extraction cycle
萃取循环
3) Ultrasonic extraction
超声萃取
1.
Research on ultrasonic extraction of ginkgolic acids in the testa of Ginkgo Biloba L.;
超声萃取银杏外种皮中白果酸工艺研究
2.
After the tobacco was simply treated by ultrasonic extraction using methanol/water(4∶1,V/V) and filtration,the obtained liquid sample was analyzed by HPLC(using) hypersil ODS column(4.
烟草样品用甲醇/水(4∶1,V/V)超声萃取,过滤,上样。
3.
Ultrasonic extraction of hexachlorobenzene(HCB) from sediments was studied in this paper.
研究了沉积物中六氯苯的超声萃取条件,并采用气相色谱进行定量分析。
4) ultrasonic and circulated extraction
循环超声提取
5) supersonic extraction
超声波萃取
1.
Determination of polycyclic aromatic hydrocarbons in tyre using supersonic extraction coupled with gas chromatography/mass spectrometry;
超声波萃取—GC/MS法测定橡胶轮胎中的多环芳烃
2.
, traditional Soxhletextraction, microwave-assisted extraction and supersonic extraction.
用索氏萃取法、微波萃取法、超声波萃取法三种方法对比研究了影响提取高粱红色素的各种因素:即溶液的酸碱性、提取温度、时间、功率、液固比。
3.
Compared with conventional extraction(CE)using vibration,the time for supersonic extraction(SE)of first four speciation fractions for heavy metals was shorter than that taken for CE;and the extraction efficiency was104%～1120%higher than the CE.
结果表明,用超声波萃取重金属的前4步形态所需时间比Tessier法的常规振荡萃取短,且萃取效率高,Cu、Ni和Mn的第1和2形态部分的萃取效率是常规振荡萃取的104%～1120%。
6) ultrasonic wave extraction
超声波萃取
1.
A method for the determination of hydrocarbon in soils by combining different extractant solvents,hexane,petroleum ether and dichloromethane : hexane (1∶2,V/V) with spectrofluorimetry is described,and to get the validity of the method,Hydro-carbon pollutant in 93 soil samples of typical coal mine was determined quickly by ultrasonic wave extraction and fluorescence spec-trum.
探讨了正己烷、石油醚及二氯甲烷∶正己烷(1∶2,体积比)混和液三种溶剂浸泡或超声波萃取与荧光光谱相结合测定土壤中荧光烃类污染物的方法,并为了验证方法有效性,对典型煤矿区93个土壤样品中的荧光烃类进行了快速检测。
2.
The result of quantitative analysis of chlorophyll in the extract with spectrophometric method indicates that compared to the common method of maceration extraction using organic solvent ultrasonic wave extraction not only provides higher production and faster extraction but also has the advantage of needless heating.
结果表明,与常用的有机溶剂提取法相比,超声波萃取法不仅萃取率高、速度快、效率好,而且是室温提取,无需加热,节约能源。
补充资料：超声
超声
UltrasofliCS
是指超出人耳听力范围的高频声(频率超过20000Hz）。超声具有与一般声音共同的物理性质，还具有一些其他重要的物理特性，如能够成束发射，直线传导，方向性好。传导过程中遇有声阻抗不同的反射界面时产生反射、折射、聚焦和散焦等现象。用于临床诊断的超声频率一般为2～7.5MHz。频率越高，对组织结构的分辨力越强，但远场声能容易被组织吸收、衰减，不易穿透较深的层次。
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