1) pyrethrins
除虫菊酯
1.
Influence of supercritical carbon dioxide extraction of pyrethrins by using ultrasound;
超声场对超临界CO_2萃取除虫菊酯的影响
2.
Preliminary study on the effect of ultrasound on supercritical carbon dioxide extraction of pyrethrins;
超声场强化超临界CO_2萃取除虫菊酯的初步研究
3.
Separation and Purification of Natural Pyrethrins by Reversed Phase High Performance Liquid Chromatography;
反相高效液相色谱分离纯化天然除虫菊酯
2) pyrethrin
[英][pai'ri:θrin] [美][paɪ'riθrɪn, -'rɛθrɪn]
除虫菊酯
1.
Study on extraction of pyrethrin by compressed CO_2;
压缩态CO_2萃取除虫菊酯的初步研究
2.
Supercritical carbon dioxide was used to extract pyrethrin from pyrethrum flowers.
采用超临界二氧化碳萃取除虫菊花中的有效成分除虫菊酯,设计了一个突然降压的过程,使除虫菊花的细胞壁破碎,减少过程的传质阻力。
3.
Compared with Soxhlet method and supercritical carbon dioxide extraction, microwave extraction of pyrethrins is a rapid method (about 200 s) with less solvent consumption (about 240 mL), higher yield and better product with light color.
对微波萃取、索氏提取和超临界二氧化碳萃取除虫菊酯的效果进行了比较 ,结果表明微波萃取法具有萃取时间短 (约 2 0 0 s) ,提取率高 ,溶剂用量少 (约 2 4 0 m L) ,产物品质好 ,色泽浅等优点。
3) pyrethroids
拟除虫菊酯
1.
Determination of Pyrethroids Residues in Tea by High Performance Liquid Chromatography with Ultrasonic Extraction;
超声波提取-高效液相色谱测定茶叶中拟除虫菊酯农药残留
2.
Study of Three Kinds of Pyrethroids in Poisonous Fish Sample with Gas Chromatography;
气相色谱法测定中毒样品鱼体中三种拟除虫菊酯农药的方法研究
3.
Progress of Pyrethroids Insecticides;
拟除虫菊酯类杀虫剂的研究进展
4) pyrethroid
[英][pai'ri:θrɔid] [美][paɪ'riθrɔɪd, -'rɛθrɔɪd]
拟除虫菊酯
1.
Application of purification with gel permeation chromatography (GPC) to determination of pyrethroid pesticide residues;
GPC净化处理在测定拟除虫菊酯残留量中的应用
2.
Multiresidue Determination of 17 Organochlorine and Pyrethroid Pesticides in Tea by Gas Chromatography-Negative Chemical Ionization-Mass Spectrometry;
GC-NCI-MS分析茶叶中17种有机氯和拟除虫菊酯农药残留
3.
Analysis of chlorothalonil and pyrethroid pesticides in water using a solid phase extraction technique;
固相萃取法测定水中百菌清和拟除虫菊酯
5) pyrethroid pesticides
拟除虫菊酯
1.
Study on quantitative structure-retention relationships for pyrethroid pesticides compounds;
拟除虫菊酯类化合物QSRR研究
2.
A solid phase extraction(SPE)-gas chromatography(GC)-negative chemical ionization mass spectrometry(NCI/MS) method was proposed for analyzing 11 kinds of pyrethroid pesticides in tea.
通过固相萃取-气相色谱-负化学离子源质谱技术建立了11种拟除虫菊酯类农药残留的检测方法,并应用于茶叶农残检测。
3.
The results showed that control efficacy of pyrethroid pesticides to insect pests of rice was good.
试验结果表明,拟除虫菊酯农药对水稻害虫具有较好的防治效果,在参试的4种药剂中,以氯氟氰菊酯效果最佳。
补充资料：除虫菊酯
分子式：
分子量：
CAS号：
性质：植物白花除虫菊中有杀虫药用价值的有效成分。其主要成分有除虫菊酯Ⅰ(pyrethrinⅠ)C21H28O3，除虫菊酯Ⅱ(pyethrinⅡ)C22H28O5，瓜叶除虫菊酯Ⅰ(简称瓜菊酯Ⅰ，cinerinⅠ)C20H28O3和瓜叶除虫菊酯(简称瓜菊酯Ⅱ，cinerinⅡ)C21H28O5。都是精油。除虫菊酯Ⅰ的R为CH3—，R'为—CH2—CH=CH—CH=CH2；除虫菊酯Ⅱ的R为CH3O—CO—，R'为—CH2—CH=CH—CH=CH2；瓜叶除虫菊酯Ⅰ的R为CH3—，R'为—CH2—CH=CH—CH3；瓜叶除虫菊酯Ⅱ的R为CH3O—CO—，R'为—CH2—CH=CH—CH3。无色粘稠的高沸点液体。溶于石油等有有机溶剂。在日光、空气、高温和碱性物作用下会引起分解而失效。是制备蚊虫香的主要原料。对人畜毒性低，使用安全。对昆虫的毒力强度，以除虫菊酯Ⅰ最强，瓜叶除虫菊酯Ⅰ次之，除虫菊酯Ⅱ再次之，瓜叶除虫菊酯Ⅱ最弱。农业上常配成溶液或乳剂使用。
分子量：
CAS号：
性质：植物白花除虫菊中有杀虫药用价值的有效成分。其主要成分有除虫菊酯Ⅰ(pyrethrinⅠ)C21H28O3，除虫菊酯Ⅱ(pyethrinⅡ)C22H28O5，瓜叶除虫菊酯Ⅰ(简称瓜菊酯Ⅰ，cinerinⅠ)C20H28O3和瓜叶除虫菊酯(简称瓜菊酯Ⅱ，cinerinⅡ)C21H28O5。都是精油。除虫菊酯Ⅰ的R为CH3—，R'为—CH2—CH=CH—CH=CH2；除虫菊酯Ⅱ的R为CH3O—CO—，R'为—CH2—CH=CH—CH=CH2；瓜叶除虫菊酯Ⅰ的R为CH3—，R'为—CH2—CH=CH—CH3；瓜叶除虫菊酯Ⅱ的R为CH3O—CO—，R'为—CH2—CH=CH—CH3。无色粘稠的高沸点液体。溶于石油等有有机溶剂。在日光、空气、高温和碱性物作用下会引起分解而失效。是制备蚊虫香的主要原料。对人畜毒性低，使用安全。对昆虫的毒力强度，以除虫菊酯Ⅰ最强，瓜叶除虫菊酯Ⅰ次之，除虫菊酯Ⅱ再次之，瓜叶除虫菊酯Ⅱ最弱。农业上常配成溶液或乳剂使用。
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