多环芳烃

On Earth, polycyclic aromatic hydrocarbons are found on burnt toast and in automobile exhaust.

在地球上，可以在烤土司和汽车尾气中找到多环芳烃。

Recently, more and more attentions are paid on the behaviors and fates of polycyclic aromatic hydrocarbons because of their potential hazard and risks to environment and humans.

中文摘要：多环芳烃是环境中较为常见的持久性有机污染物，它们在环境中的行为、归趋及可能造成的危害和环境风险越来越引起人们的关注。

Determination of Polycyclic Aromatic Hydrocarbons in Drinking Water By b Liquid-Liquid Extraction and HPLC with Coupled Ultraviolet and Fluorescence Detection.

测定多环芳烃的饮用水中的B液液萃取和高效液相色谱耦合紫外线和荧光检测。

The contents of 10 species of polycyclic aromatic hydrocarbons and the routine indexes of COD, BOD5, etc.

用HPLC和化学分析法，监测了1999~2002年丰水期和枯水期杭州市地面水中10种多环芳烃的含量和COD、BOD5等常规指标。

Recently, Shelnutt and co-workers obtained discrete porphyrin nanosheets reprecipitated from their solutions;[3] Sathish and co-workers constructed hexagonal C60 nanosheets using a liquid–liquid interfacial precipitation method;[4] the groups of Yao[5] and Hu[6] prepared singlecrystalline nanosheets of polycyclic aromatics using a surfactant- assisted reprecipitation and a physical vapor transporting method, respectively; and Zhang and co-workers suggested that molecules with intramolecular charge-transfer dipole moments could be grown into quasi-2D nanostructures.

近年来，Shelnutt及其同事由他们的溶液再沉淀获得了离散的卟啉纳米片[3]； Sathish和他的同事用液－液界面沉淀法构建了六边形的C60纳米片[4]； Yao[5]和Hu[6]分别用表面活性剂辅助的再沉淀和物理气相输运法制备了多环芳烃的单晶纳米片；而Zhang和他的同事提出，具有分子内电荷转移偶极矩的分子可以生长成准二维的纳米结构[7]。

As two most important contaminants, heavy metal that can't be biodegraded and PAHs that typify carcinogenicity have not only brought severe ecocatastrophes in many developed countries, but also caused an ecocrisis in most developing countries.

不能降解的重金属和具有致癌性的多环芳烃是水体和沉积环境中尤为重要的两类污染物，不仅在发达国家已经引起过严重的生态学灾难，在发展中国家也日益成为环境危机。

As two most important contaminants, heavy metal that cant be biodegraded and PAHs that typify carcinogenicity have not only brought severe ecocatastrophes in many developed countries, but also caused an ecocrisis in most developing countries.

不能降解的重金属和具有致癌性的多环芳烃是水体和沉积环境中尤为重要的两类污染物，不仅在发达国家已经引起过严重的生态学灾难，在发展中国家也日益成为环境危机。

The transformation of microorganism plays an important role in the degradation and fating of PAHs.

本文就微生物降解多环芳烃代谢途径的多样性和分子遗传学机制的研究进展进行了综述

To investigate the distribution and content of polycyclic aromatic hydrocarbons in raw coal and gasified products during coal gasification, the air and steam gasification of coal was tested in an atmospheric fluidized bed gasifier.

为了研究煤及其气化产物中多环芳烃的分布特徵，在一台小型常压流化床气化炉上进行了以空气和水蒸气为气化剂的煤气化试验。

S. EPA priority pollutants and are powerful carcinogenic substances. Various alkyls PAHs as well as heterocyclic hydrocarbons were also detected.

未取代的多环芳烃含量为主，其中大部分属于美国环保局提出的优先控制污染物，属强致癌和可能致癌物质。

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。