查询词典 PAHs

Results PAHs were detected in both low-water and high-water period, including fluorene, phenanthrene, naphthalene, acenaphthylene and acenaphthene.

结果 丰水期和枯水期两次水样中均检测出PAHs，主要为芴和菲，其次为萘、苊、二氢苊、蒽、荧蒽、芘等。

Then,the mechanisms of PAHs accumulation,transfer and biodegradation and its effecting factors were elucidated combining field survey and laboratory simulation methods and environmental geochemistry,agrology and biology subjects.

本研究选择典型土壤/沉积物—生物系统，通过实地资料收集与室内分析与模拟相结合的方法，联合环境地球化学、土壤学、与生物学等学科，研究了典型土壤/沉积物—生物系统中PAHs的累积、迁移与降解机制与影响因素。

There exists certain relativity between the concentration of BaP and other 9 PAHs.

实验结果经统计处理发现BaP浓度与其它9种PAHs浓度存在一定的相关性，相关系数均在0.60以上。

Drying green tea; PAHs; composing; extraction rule; GC

烘青绿茶； PAHs；组成；浸出规律；气相色谱

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。

PAHs source analysis suggested that, in the Yangtze Estuary, PAHs at locations far away from cities were mainly from petrogenic sources.

上海市主要水体(长江口、黄浦江和苏州河口)表层沉积物中总PAHs浓度为107～7，177ng/g-dw。

Fat drippings create smoke that is filled with carcinogenic polycyclic aromatic hydrocarbons, or PAHs. When the smoke envelopes the food, it transfers the PAHs onto the surface of the meat. And when meat, chicken and fish are grilled at high temperatures for long periods of time, compounds inside the food react and create heterocyclic amines, or HCAs. HCAs are worrisome because in lab studies they've been shown to trigger breast, colon and prostate tumors in rats and mice.

滴下来的油脂产生的烟雾充满了致癌的多环芳烃，简称PAHs，当烟雾环绕在食物周围的时候，这些多环芳烃也附着在了食物的表面，当猪肉，鸡肉或是鱼肉在长时间的高温烧烤时，这些食物本身所含有的成分产生了化学变化生成杂环胺类物质，简称HCAs，这类物质相当的麻烦，因为实验室研究发现它们会引起大鼠和小鼠乳腺，结肠以及前列腺部位的肿瘤。

The digestion and composting could obviously reduce PAHs contents,and change the distribution pattern of PAHs in sludges.

其中消化、堆肥处理可明显降低污泥中多环芳烃的含量，并改变污泥中PAHs的分布模式。

In conclusion, the numbers of PAHs rings have great influence on PAHs degradation.

综合以上结果，PAHs的降解随环数增加而减少。

Therefore, many researchers have been focusing on the biodegradations of PAHs by various aerobic bacteria.

在自然环境中，好氧细菌对PAHs的生物降解是一种很重要的方式，凸显其在清除环境PAHs污染物中具有广阔的应用前景。

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。