查询词典 PAHs

The samples'concentration level is ng/L, meanwhile, which doesn't go beyond the national standard "Environmental quantity standards for surface water-GB 3838—2002"and "Drinking water quality criteria standard GB5746-85". The study shows that the water purification palnts in The Three Gorges Reservoir Area especially those raw water from Yangtze River and Jialingjia River is safe enough for drinking and its level is low. After having tested and analyzed the raw water samples of 6 water purification plants in Three Gorges Reservoir Area, I have found several variety of PAHs and PAEs. Of which, naphthalene, fluoranthene and DEHP are priority pollutants firstly listed by SEPA..

按照《地面水环境质量标准GB 3838—2002》和《生活饮用水水质标准GB5746-85》对有机氯农药的规定，上述6 个水厂均未超标，表明三峡库区城市给水厂特别是以长江、嘉陵江为水源的水厂，其有机氯农药污染较轻，饮用水水质安全。6 个给水厂的原水均检出含有多种PAHs 和PAEs，其中包括有我国国家环境保护总局首批公布的水中优先检测污染物萘、荧蒽、DEHP。

The aim of this paper is to remove the polycyclic aromatic hydrocarbons from hot gas during coal combustion. The adsorption for PAHs including Napthalenene, Fluorene and Phenanthrene with six sorbents was investigared.

针对热电厂烟气中排放的多环芳烃污染物，在实验室规模上研究了六种吸附剂对烟气中典型的PAHs，如萘、芴、菲的吸附脱除行为。

Naphthaline is one of the 16 kind PAHs in 129 kinds precedence control pollutants recommended by US EPA.

在美国环保局1977年筛选出的129种优先污染物中，PAHs就有16种，且全部都属于具有长效性、积累作用和不可挥发的Ⅰ级污染物。

The results indicated biogenic conversion, petrogenic and pyrogenic were three important sources of PAHs and their contributions were 19%, 24% and 57%, respectively.

由于长江口距离燃烧源较远，与周边的城镇相距甚远，所以长江口表层沉积物中高环多环芳烃含量相对较低，以石油源PAHs污染为主。

PAHs in tobacco smoke were in good relation to tar content, having nothing to do with nicotin content.

4建立了污染源相似度参数，解析河流底泥中PAHs来源。

Based on the division of spatial scale and regionalized component analysis of topsoil PAHs in Tianjin area, the spatial distribution of regionalized components at different scales was studied in this paper.

在空间尺度划分和区域化分量研究的基础上，进一步分析了天津地区表层土壤PAHs不同空间尺度上区域化分量的空间分布特征，并分析了形成分布特征的原因。

Based on household activity questionnaires and actual analytical concentrations, the main influencing factors accounted for gaseous PAHs in indoor air, identified by multifactor analysis of variance, include cigarette smoking, use of moth ball, intensity of draft, cuisine frequency and built age.

根据家庭调查问卷和实测的浓度水平，多因子方差分析的结果显示，北京城、近郊区民居室内气态PAHs的浓度和组分谱的主要影响因素包括吸烟、卫生球使用、居室通风强度、日烹调次数和民居建成时间。

Most of them are mutagens and carcinogens,and can induce malformation of embryo.Therefore, special attention has been focused on the environmental chemical behaviors of PAHs.

由于PAHs在环境中普遍存在、难降解、持久性强和具有较强的&三致&作用，而使其在环境中的环境化学行为备受关注。

Harmful substances, heavy metals, and ROHS testing, PAHS, more than POHS, SVHC, halogen, plasticizer, formaldehyde, azo, volatile organic compounds, asbestos, etc.

有害物质检测：重金属、 ROHS 、 PAHS、 POHS 、 SVHC 、卤素、增塑剂、甲醛、偶氮、 VOC、石棉等。

Inspection and Testing of Harmful substances: Heavy metal, ROHS, PAHS (polycyclic aromatic hydrocarbons), POHS, SVHC, halogens, plasticizers, formaldehyde, AZO, VOC and asbestos etc.

有害物质检测：重金属、 ROHS 、 PAHS、 POHS 、 SVHC 、卤素、增塑剂、甲醛、偶氮、 VOC、石棉等。

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。