2) pyrethroid
[英][pai'ri:θrɔid] [美][paɪ'riθrɔɪd, -'rɛθrɔɪd]
拟除虫菊酯类
1.
The Research and Development on Pyrethroids Emulsion, Oil in Water;
拟除虫菊酯类农药水乳剂的研制与开发
2.
Degradation of Pyrethroids and Carbamate Pesticides in Apple Juice by Irradiation
苹果汁中拟除虫菊酯类和氨基甲酸酯类农药辐照降解
3.
The analytical method for five pesticide residues of pyrethroid,such as Fenpropathrin,Cypermethrin.
以正己烷为萃取剂,采用毛细管气相色谱法同时测定生活饮用水及水源水中甲氰菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯和联苯菊酯五种拟除虫菊酯类农药残留量。
3) Pyrethroids
拟除虫菊酯类
1.
Determination of Pyrethroids Pesticides Multi-residues in Tea by Gas Chromatography/Mass Spectrometry;
茶叶中多种拟除虫菊酯类农药残留量的气相色谱-质谱测定
2.
By using the brain slice isotope labeled neurotransmitter release method,the present study was conducted in vitro to observe the effects of pyrethroids on the excitatory amino acid neurotransmitter gluramate release from the rat forebrain slices.
应用脑片放射性同位素标记神经递质释放实验，体外观察拟除虫菊酯类杀虫剂对大鼠额叶皮层脑片兴奋性氨基酸递质谷氨酸释放过程的影响。
4) pyrethrins/tox
除虫菊酯类/毒性
5) 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
6) 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。
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