污染物

It is found that the power spectra are continuous spectra, on which some spikes indicating periodic characteristics are superposed.

在第一部分中，研究了大气污染物浓度变化的非线性动力学特征，详细考察了污染物浓度的功。。。

In addition, different organisms have different ranges of tol erance and threshold levels for various pollutants.

空气中的污染物可以分为两大类，一类主要的污染物是直接混入空气中并且其浓度达到有害程度的化学物质。

SPMDs filled with triolein, and goldfish were simultaneously exposed to nine moderately hydrophobic hydrophobic chlorophenols and nine weakly hydrophobic nitroaromatics respectively, from water in laboratory continuous-flow experiments.

针对氯酚和硝基芳烃两类、各九种有毒有机污染物，在实验室内分别进行了流动体系下SPMD模拟采样动力学研究，并和鱼体富集进行平行比较，探讨了半渗透膜采样技术对中、低等疏水性污染物进行监测的可行性和机理。

Based on long-term data from operation of a new-style oxidation ditch process at Zhuji Feida-hongyu wastewater treatment plant in Zhejiang Province, we propose a new principle for the interaction of Tubificidae and microorganisms and obtained a mathematical description of pollutant input and output over time in this system. Then a transmission function for interaction system of Tubificidae was constructed to simultaneously simulate the pollutant removal by Tubificidae during wastewater treatment and sludge degradation.

基于浙江省诸暨市菲达宏宇污水处理厂新型氧化沟工艺的现场长期观察和试验研究，提出&水蚯蚓-微生物共生系统&的新技术原理，获得了&水蚯蚓-微生物共生系统&中污染物输入量与输出量随时间的动态变化规律，并建立了水蚯蚓作用的传递函数，从而实现水蚯蚓在污水处理和污泥降解过程中对污染物去除作用的模拟。

According to the pilot researches,the effects of Typha wetland and hydraulic retention time in the purification efficiency for highly salty reused water treatment in TEDA Landscape River were studied in this paper,while different kinds of contamination is evaluated.

通过香蒲湿地对天津泰达景观河道水体污染物去除的室内试验，研究了香蒲湿地对泰达高含盐再生水的净化效果以及水力停留时间对水质净化效果的影响，考察了不同污染物的去除情况。

On the base of reviewing the development of NSP models, some deficiencies of existent models are analysed and listed as follows: most models can be applied only to very small watershed; mechanism models involve too many parameters which can not be calibrated properly by limited data; amoung practical models, empirical models are much more common than mechanism models; most models are focus on the conservative soluble pollutants rather than non-conservative and particulate pollutants; almost all models rely highly on the measured data, and there are fewer studies about the load estimation for ungauged areas.

本文在评述非点源污染模型研究进展的基础上，分析了现有模型的不足，主要有：大多数模型只能适应于很小的流域面积；机理类模型参数过多，率定困难，应用效果不理想；实用模型中，经验类模型多，机理类模型少；对保守性的液态污染物研究得较多，对非保守性和固态污染物研究得较少；各类模型均高度依赖于实测资料，无资料地区的模型或预测方法研究得很少。

Some pollutants with deadly toxicity and complex form, such as HC1, heavy metals and dioxins were very harmful to peopel health and environment. It is very nessary to research formation and control mechanism of these harmful pollutants during the MSW incineration. In this thesis, the behaviors of sulfur and chlorin and their influence factors were discussed.

其中一些如HCl、重金属污染物以及Dioxins有机污染物等，毒性大，形态复杂，对人身安全和环境造成了极大危害，因此对其形成机理和控制机理进行深入的探索和研究十分必要。

Some pollutants with deadly toxicity and complex form, such as HC1, heavy metals and dioxins were very harmful to peopel health and environment. It is very nessary to research formation and control mechanism of these harmful pollutants during the MSW incineration.In this thesis, the behaviors of sulfur and chlorin and their influence factorswere discussed.

其中一些如HCl、重金属污染物以及Dioxins有机污染物等，毒性大，形态复杂，对人身安全和环境造成了极大危害，因此对其形成机理和控制机理进行深入的探索和研究十分必要。

This kind of highly concentrated organic industrial wastewater is hard to be biodegraded due to its complex component and high chroma.

焦化废水含有大量有机污染物和有毒无机物，成分复杂，污染物色度高，属较难生化降解的高浓度有机工业废水。

Taking Guixin highway as a case, the pollution state and its change regularity in vertical direction are analyzed, which proves that the heavy mental pollutant enriches within 5m under the ground and decreases towards ground surface but increases near the surface slightly that may have something to do with the convoluting and accumulating effects of tail gas.

文章以贵新路为例，分析了公路边坡土壤重金属污染物的垂向污染状况和变化规律，得出了路坡重金属污染的富集带约分布在距地面5m处，随着高度的增加污染物含量减少，但到了路坡坡顶又出现小幅增高现象，这有可能与汽车尾气卷扬和淀积效应有关。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。