多环芳烃

The sorption of Acenaphthene and Phenanthrene was characterized by linear isotherm, indicating solute partition between water and the organic phase in soil.

静态实验结果表明，土壤对焦化废水中以UV_(254)为代表的具不饱和键有机物去除主要是分配作用的结果，其吸附速度非常快，且温度的影响很小；土壤对多环芳烃的吸附去除效果明显，其中苊和菲的吸附等温线呈线性。

In this study, the CPE processes of four different kinds of polyaromatic hydrocarbons, acenaphthene, anthracene, phenanthrene and pyrene, with two kinds of silicone surfactants, DC-193 and DC-190, were studied separately, and four different assisting methods for the phase separation of the CPE process including heating at a higher temperature, adding salts, centrifugation and stirring were introduced, respectively.

今利用两种聚醚型有机硅表面活性剂DC-193和DC-190，对蒽、菲、芘和苊四种多环芳烃进行浊点萃取研究，分别使用加热、加盐、离心和搅拌等辅助方法改变相分离过程的速度。通过测定表面活性剂富集相的体积百分率Vs/随时间的变化和最终的萃取率，研究上述四种不同辅助方法对相分离行为和萃取性能的影响。

In this study, the CPE processes of four different kinds of polyaromatic hydrocarbons, acenaphthene, anthracene, phenanthrene a...

今利用两种聚醚型有机硅表面活性剂DC-193和DC-190，对蒽、菲、芘和苊四种多环芳烃进行浊点萃取研究，分别使用加热、加盐、离心和搅拌等辅助方法改变相分离过程的速度。

Humic acid in soil plays an important role in transfer of hydrophobic organic compounds such as polycyclic aromatic hydrocarbons.

土壤腐殖酸的吸附作用对多环芳烃等疏水性有机污染物的迁移产生影响。

The addition of alkyl groups to PAHs enhances the carcinogenic potential of these compounds.

烷烃加在多环芳烃上的系列会提高这些化合物的致癌作用。

In chapter 3, a method for simultaneous resolution and determination of three components ( pyrene, chrysene and anthracene) in complex coal tar system has been introduced.

论文的第三章，阐述了利用激发-发射荧光法对组分复杂的煤焦油实际样品中的三种多环芳烃：蒽、芘和的同时分辨和定量测定方法。

It is suggested that the metabolism of heterocyclic amines generated from fried fish may be altered by genetic variability of NAT2. The rapid acetylator would increase the heterocyclic amines from pre-carcinogen to active formation.

NAT2多态性与吸烟有交互作用，特别是野生纯合型与吸烟交互作用可使直肠腺瘤复发危险度上升到22.75(95％CI 2.11-244.86，P＝0.007)，其机制可能为NAT2酶可能参与了烟草中产生的多环芳烃致癌物，从而涉及直肠腺瘤发生。

The results indicated biogenic conversion, petrogenic and pyrogenic were three important sources of PAHs and their contributions were 19%, 24% and 57%, respectively.

由于长江口距离燃烧源较远，与周边的城镇相距甚远，所以长江口表层沉积物中高环多环芳烃含量相对较低，以石油源PAHs污染为主。

A novel method was deveolped for the simultaneous determination of polycyclic aromatic hydrocarbons in interfering multicomponents system in water.

建立了一种同时测定水体中多组分溶解态多环芳烃的新方法。

Rather they are found as mixtures of two or more PAHs

它们往往是两个或更多的多环芳烃的混合物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。