pcdd 中文意思是什麼
pcdd
解釋
氯代二苯並二英-
Since 1951, the total fluxes of cdd / fs in the qingdao coastal sea have increased steadily. the total teqs ( teq ) fluxes decreased in 1980 and then increased again, exceeding all the levels before. except for the area near the river mouth, the source of pcdd / fs at other stations was believed to be the atmospheric deposition from long - range transport
Pcdd / pcdf比值和ocdd占總p4 . scdd / fs的百分比ocdd （ %藝）表明青島近海pcdd / fs的來源相對恆定，除河口處受河流輸入影響之外，其它海區的pcdd / fs來源均可認為是由大氣輸入。 -
Except for the area near the haibo river mouth, the relative contributions of individual 2, 3, 7, 8 - substituted congeners at each station were similar, the lower chlorinated congeners dominated over the higher chlorinated pcdd / fs
除河口處外， pcdd / fs同系物分佈基本上相同，即低氯代pcdd / fs佔主導。 pcdd / fs總量的垂直變化趨勢是從1951年到現在逐漸增大。 -
Polychlorinated dibenzo - p - dioxins and dibenzofurans ( pcdd / fs ) in surface sediments at 7 stations, 1 sediment core and 2 mussels from qingdao coastal sea were analyzed using hrgg - hrms. the highest level was an order of magnitude higher than at other stations. the horizontal distribution of the total 2, 3, 7, 8 - substituted pcdd / fs in the sediments formed an east - west pattern
用高解析度氣相色譜一高解析度質譜方法（ hrgc一hrms ）對表層沉積物（ 7個） 、巖心沉積物（ l個）和貽貝（ 2個）中的多氯代二苯並二惡英/吠喃（ pcdd / fs ）進行了探討。
分享友人