More research is needed to develop effective methods of removing volatile chemicals from waste streams without contributing to the problem of air pollution . 要注意多研究從廢水中除去揮發(fā)性化學(xué)物質(zhì)而又不引起空氣污染的有效方法。
Method b ? for non - volatile chemicals 方法b :針對不揮發(fā)的化學(xué)試劑。
Method a ? for volatile chemicals 方法a :針對揮發(fā)性化學(xué)試劑。
I volatile chemical constituents from traditional chinese medicine po chai pills i 中成藥保濟丸揮發(fā)性化學(xué)成分
Determination of volatile chemical components of radix paeoniae rubra by gc - ms and help method 聯(lián)用色譜和化學(xué)計量學(xué)方法分析赤芍揮發(fā)性成分
Of the 196 volatile chemical compounds found in yerba mate , 144 are also found in tea 在馬黛茶中已發(fā)現(xiàn)的196種揮發(fā)性的化合物中,有144種在茶葉中也可以找到。
Carton paper should not put in any working environment with volatile chemical used , such as prints or gas . . . it will easily cause self - burnt on the carton paper later on 紙箱紙不應(yīng)該和易揮發(fā)的化學(xué)品堆放在同一工作環(huán)境中,例如油漆或氣體… …這類化學(xué)品在包裝紙旁很容易引起自燃
This is because there is a trade - off between the energy that plants spend on making the complex , volatile chemicals that attract women and insects alike , and that available for making and maintaining pretty - coloured petals 這是因為,植物合成揮發(fā)性復(fù)合物(這種復(fù)合物對女人和蟲子有著同樣的吸引力) ,與形成顏色迷人的花瓣并為之提供養(yǎng)料,兩者所耗能量存有一種平衡關(guān)系。
( 7 ) analyzed volatile chemical composition of two kind of herbs with hs - spme " gc - ms . the results are satisfactory , proving that adopting self - spme apparatus can be succeed in enrichment of volatility composition and used in the microanalysis of the volatile matter ( 7 )用自制裝置spme一一gc / ms分別對山奈和新鮮的劍麻鮮花香氣成分進(jìn)行了剖析,效果令人滿意,說明采用自制的spme裝置可成功地富集揮發(fā)性成分,可用于痕量揮發(fā)物的分析。