多环芳烃

Polycyclic aromatic hydrocarbon in aerosols is one of the most harmful pollution to people's health.

大气气溶胶中的多环芳烃是对人体健康危害最大的环境污染物之一。

This paper describes a method for the determination of polycyclic aromatic hydrocarbons in soil of green food producing area .

对绿色食品产地土壤中多环芳烃的气相色谱质谱联用分析法进行了研究。

Asenic, PAHs, asbestus, coal tar and tobacoo smoke, vehicle emissions, cooking oil fumes and so on were all regarded to be important reasons for lung cancer.

无机砷、多环芳烃、石棉、煤焦油及香烟烟雾、汽车尾气、烹调油烟等环境混合物都被认为是肺癌发生的重要因素。

Through comparing with BaP content in coal smoke and traffic tunnels, it indicates that coking work is one of important sources of PAHs pollution.

通过与燃煤烟尘和交通隧道中BaP含量的比较，说明焦化作业是造成多环芳烃污染的重要污染源之一。

The results showed that: the concentrations of PAHs were in the range of 84.5ng/g to 167.6ng/g, and the average value was 138.62ng/g in surface sediments.

结果表明，表层沉积物中PAHs的浓度范围为85.4~167.7ng/g，平均值为138.62ng/g，总多环芳烃的最大值是椒江码头。

On the other hand, the effect of magnetic field on fluorescence polarization spectra of PAHs were examined in glycerol.

研究了磁场对多环芳烃分子在丙三醇介质中荧光偏振光谱的影响。

Especially the much ring fragrant hydrocarbon in them, because of having carcinogenic, mutant, aberrant and can pursue level enrichment through food-chain in the body of animals and plants, they accumulate in soil is harmer.

特别是其中的多环芳烃，因有致癌、致变、致畸等活性和能通过食物链在动植物体内逐级富集，它在土壤中的累积更具危害。

This is a second, but indirect, way in which PAHs can cause cancer.

" "这是第二次，但间接的方式多环芳烃可以导致癌症。

In this study, six surfactants with different ionic type, molecular structure, and phenanthrene (3-rings PAHs) were used to test the effects of surfactant to the degradation of phenanthrene, and to the combined toxicity with the phenanthrene.

本篇论文以六种不同离子类型、分子结构的表面活性剂和以菲为多环芳烃的代表，研究了表面活性剂对菲降解的影响，和与菲共存时的复合毒性，以及表面活性剂对菲在模拟生态系统中的迁移转化规律的影响。

The qualitative analysis of N polyaromatics in heavy oil was made by a double adsorption separation followed by the application of low voltage ionization and high resolution MS direct sampling.

通过两次吸附分离，然后采用低压电离，高分辨质谱直接进样技术对重馏份油中的含氮多环芳烃进行定性测定。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。