benzene residue

基本解釋

Normally the by-product. benzene residue. in benzene refining in coking plant is put into tar or sold and so the benzene product in the residue cant be recovered.
焦化廠苯精制的副產品-苯殘渣，一般采用配入焦油中或外賣的處理方法．其中的苯類產品得不到有效回收。
There were not n-hexane, benzene, toluene and xylene, o-xylene, styrene and other organic solvent residue in the purification of apple polyphenol by the headspace gas chromatograph.
再采用頂空氣相色譜法檢測所得蘋果多酚純化物中正己烷、苯、甲苯、對二甲苯、鄰二甲苯、苯乙烯等有機溶劑殘留均低于檢測限。