查询词典 PAHs

Through the pyrolysis of PVC in air with low flow rate and in nitrogen, small amounts of PAHs and homologue of benzenes were formed.

PVC材料在氮气环境和流速较低的合成空气环境中，有少量苯系物和PAHs产生。

This paper introduced the development of persistent organic pollutants in the world, and described the distribution of persistent organic pollutants in typic area of our country, PAHs in middle and lower reaches of huai river was higher, and DDTs and PCBs were higher in Dalian lough than that in outer areas.

介绍了国内外持久性有机物的研究进展，分析了中国典型地区中的持久性有机污染物的分布情况，其中淮河中下游的PAHs含量较高，而大连湾检测出的DDTs和PCBs含量均高于其他地区。

Soil-microorganisms system in two sites along Mosel river was chosen as typical soil-microorganisms system because the soil was highly polluted by PAHs and microorganisms were the majority of organisms.

土壤—微生物系统选择受PAHs污染严重且微生物为优势生物的Mosel河流沿岸土壤—微生物系统为例，研究结果发现，Temmels土壤添加的D_(10)-PA被很快释放，并被本土微生物迅速降解，在2周时间内降解了约92%，并在4周内降解了约99%，以后基本保持稳定。

PAHs (Polycyclic Aromatic Hydrocarbons) even of Power Tools in German; Ni Even of Wenzhou's Shoe in Italy, even a famous electronic manufacture had the pecuniary penalty of over hundred million US dollar due to the Cd, even of game boy's handle. In 2000 EU has constituted and announced ELV directive concerned with automotive industry only which strictly measures the use of some hazardous substances in vehicles. Then who will like to be the unfortunate in automotive industry?

电动工具在德国遭遇PAHs事件，温州鞋在意大利遭遇Ni事件，就连某国际著名的电器厂商也曾因游戏机手柄在荷兰遭遇Cd事件而导致过上亿美元的巨额罚款，而2000年欧盟已专门针对汽车业制定颁布了ELV指令，严格规定了汽车零部件及材料中的有害物质的限值，又有谁愿意成为汽车业的不幸儿呢？

Different laws have been passed by the Peoples Republic of China, the United States of America, the European Union and the World Health Organization to control over PAHs because of their wide-spread distribution in the environments and perniciousness to human health and the ecosystems.

对于海洋体系来说，PAHs主要来自大气干湿沉降和地表径流等外部输入，通过海水扩散和大气传输作用在整个海洋中传递，并能在生物体内富集，沿食物链放大，对生物产生极大危害。

Re-sults indicated that PAHs in indoor air of Shenzhen was mainly of vapor phase compounds with phenanthrene dominant.

结果表明，深圳市室内大气PAHs主要以气态化合物为主，尤以菲的含量为最高。

Benzopyene has a good correlation with total PAHs.

样品中，苯并芘的含量与PAHs总量有良好的线性关系。

Pot experiment was conducted with a series of treatments of soils in a greenhouse to investigate the effects of arbuscular mycorrhiza on the residual forms of PAHs in soils.

采用盆栽试验方法，以危为多环芳烃代表物，研究了丛枝菌根作用下土壤中PAHs的残留及形态。

D for spiked PAHs in sediment and benthic samples were found to be 82.8 to 102.4%, 85.3 to 97.6%, respectively.

建立了植物样品中PAHs分析的萃取和净化方法。

Based on Fluoranthene/Pyrene and Pyrene/Benzopyrene ratios, the main source of PAHs was identified from petroleum industry at Jinzhou Bay, petrolic combustion turned into the source in Qinhuangdao and part of Liaodong Bay, and coal-burning was primary in the other areas.

荧蒽/芘和芘/苯并芘两个比值参数显示锦州湾近岸沉积物的PAHs主要源于石油工业，秦皇岛近岸和莱州湾部分站点主要来自燃油产物，而其它海区的大部分站点则属于燃煤型来源。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。