查询词典 PAHs

In comparison to those at 700℃, smaller PAHs and less degree of alkylation of PAHs were formed at 800℃.

与700℃时相比，800℃时各样品裂变产物中大分子PAHs的生成量减少，烷基化程度也随之降低。

The PAH constituents indicated that high molecular weight PAHs were dominant in Luqiao soils.

PAHs组成特征表明，路桥土壤中以高环PAHs为主。

Light molecular weight PAHs were dominant in selected PAHs, and the two plus three ring PAH were responsible for 86% of 16PAHs.

主流烟气中轻组分PAH，为主，其中(2+3)环PAHs占总量的86%。

A complete set of thermodynamically consistent property data (vapor pressure, aqueous solubility, octanol solubility, octanol-water partition coefficient, octanol-air partition coefficient, and air-water partition coefficient) for sixteen PAHs naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzoanthracene, benzofluoranthene, benzofluoranthene, benzopyrene, indeno[1,2,3-c,d]pyrene, dibenzo(a,hanthracene and benzoperylene was derived from measured data reported in the literature.

然而，由于存在实验室内、实验室间和不同仪器、不同方法间的误差等因素，已发表的物化性质数据存在小分子量PAHs物化性质参数多但存在差异、大分子量PAHs相关参数较少甚至缺乏的问题。

In single system, the degradation rate of benzo fluoranthene and benzo fluoranthene increased, while the other PAHs were in adverse.

结果表明：接种处理30 d，该菌株对混合体系中5种PAHs的降解率为16.1%~24.6%，而对单一体系中的降解率为10.4%~33.3%；同时，对单一与混合体系中PAHs的降解作用存在一定差异，苯并荧蒽和苯并荧蒽在单一体系中降解率增大，而其他种类的则减小。

We find Cuscuta sp. have the most significant PAHs degrading activity.

在本研究中，以五种PAHs作为分解的基质，发现菟丝子分解PAHs的活性最显著。

Additionally,relative enrichment factors had no significant correlation with 1g K_ in both soil profiles,indicating that PAHs behaviors in soil profile were not influenced by their physicochemical characteristics but other factors(such as eluviate and organism disturbing).

另外，水稻种植前后土壤剖面PAHs相对富集系数与1g k_相关性均不明显，表明PAHs自身理化性质对其迁移特征影响较弱，其他作用机制影响较强。

Further analysis on the pyrogenic PAHs of the Huangpu River sediments discovered two major sources of vehicular exhaust and coal combustion, the contributions of which were quantified as 30% and 27%, respectively.

黄浦江流经上海市区，以燃烧源PAHs污染为主，在不同河段具有不同类型的燃烧源，上游河段PAHs污染主要源于草本植物、木材和煤的不完全燃烧，中下游河段PAHs污染主要来源于油类的燃烧。

During remediation experiment, the addition of benzene acid and Tween 80 gave higher CO2 evolution. The result of Microtox assay showed good correlation between aromatic rings of PAHs at low concentration. The Medaka embryo toxicity test had presented that while eggs were exposed to the soil extracts from fluoranthene and pyrene at high concentration (3mg PAHs/g soil), the embryo showed low hatch ratio、bleeding, high abnormal ratio and delayed mature period. The addition of composting materials for remediation study showed strong embryo toxicity to Medaka embryo at all test concentration.

青鱂鱼鱼卵试验部分，受单一与混合PAHs污染土壤之萃取物对青鱂鱼鱼卵孵化影响，当暴露在浓度3 mg PAHs /g soil时，及四环的Fluoranthene与Pyrene之下，皆有高未孵化率、高出血率、高畸形率及孵化天数的延迟现象产生；而在复育实验之土壤萃取物对青鱂鱼鱼卵孵化之影响，以添加酸性界面活性剂与中性界面活性剂实验组其鱼卵之未孵化率皆为零，与Microtox毒性测试结果有良好的关连；加入不同复育添加剂中，则以添加菜肥之实验组，对於青鱂鱼鱼卵孵化之影响为最大。

3 Ring and 5 ring PAHs accounting for 19%、10%、13%, respectively for total PAHs. Vehicle of longer mileages discharged more toxic PAHs.

香烟烟雾中PAHs总量与煤焦油含量有较好的相关性，与尼古丁无明显相关性。

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。