天王星对棉株叶组织超微结构的影响

施用不同浓度的农药于棉花生育期,通过电镜试验观察农药对棉株叶肉组织超微结构的影响。结果首次发现,棉株的叶肉细胞对病虫害危害和高浓度药剂处理的反应都很敏感,而低浓度药剂处理后的叶肉细胞趋于正常,表明了在本地区的农业环境条件下,农药可能会影响植物的超微结构并破坏其正常的生理代谢过程。图版２参１２     

确定工业企业卫生防护距离技术方法研究

卫生防护距离的确定对于新建工业企业的选址和现有工业企业的环境管理起着至关重要的作用。文章通过对确定工业企业卫生防护距离技术方法和技术要点的研究总结,开发出卫生防护距离计算系统,建立一套系统、准确的实用技术方案,并举实例进行实证分析。     

安阳市大型工业区和周围社区土壤中重金属污染特征及健康风险评价

为了解安阳市大型工业区和周围社区表层土壤中重金属元素的分布特征和健康风险,用ICP-OES测定了样品中9种重金属元素的含量.结果 表明:Zn、Cu、Pb、Mn、As、Cd、Cr、Co和Ni在社区表层土壤中的平均浓度为71.0、25.6、43.2、548、118.4、0.71、59.5、18.8、24.5 mg/kg;在...     

全新型生态工业园区的工业共生链网结构研究--新疆石河子国家生态工业(造纸)园区的设计分析

本文以新疆石河子国家生态工业(造纸)园区的设计为例．运用产业生态学理论，深入系统地分析了生态工业园区的系统构成、工业共生关系以及生态工业链网结构．为全新型生态工业园区的设计及其运行提出了切实可行的建议。     

Characterization and distribution of polycyclic aromatic hydrocarbon in sediments of Haihe River, Tianjin, China

In this study sediment samples were collected from 13 sites of Haihe River in Tianjin City, China, sixteen of priority polycyclic aromatic hydrocarbons （PAHs） listed in USEPA were analyzed by means of GC-MS. The total concentrations of PAH ranged from 774.81 to 255371.91 ng/g dw, and two to four rings of PAHs were dominant in sediment samples. Molecular ratios, such as phenanthrene/anthracene, fluoranthene/pyrene and low-molecular-weight PAH/high-molecular-weight PAH, were used to study the possible sources of pollution. It indicated a mixed pattern of parolytic and petrogenic inputs of PAHs in sediments in Haihe River. The petrogenic PAHs may be mainly derived from the leakage of refined products, e.g., gasoline, diesel fuel and fuel oil vehicle traffics or gas stations from urban area. The pyrolytic PAHs might be from the discharge of industrial wastewater and the emission of atmospheric particles from petrochemical factories. In addition, the levels of PAHs in the urban and industrial areas are far beyond the values reported from other rivers and marine systems reported. This situation may be due to polluted discharging from some petrochemical industrial manufactories and worse traffic conditions in Tianjin.     

Supercritical water oxidation for the destruction of toxic organic wastewaters： A review

The destruction of toxic organic wastewaters from munitions demilitarization and complex industrial chemical clearly becomes an overwhelming problem if left to conventional treatment processes. Two options, incineration and supercritical water oxidation （SCWO）, exist for the complete destruction of toxic organic wastewaters. Incinerator has associated problems such as very high cost and public resentment; on the other hand, SCWO has proved to be a very promising method for the treatment of many different wastewaters with extremely efficient organic waste destruction 99.99% with none of the emissions associated with incineration. In this review, the concepts of SCWO, result and present perspectives of application, and industrial status of SCWO are critically examined and discussed.     

Distribution patterns of octylphenol and nonylphenol in the aquatic system at Mai Po Marshes Nature Reserve, a subtropical estuarine wetland in Hong Kong

Spatial and temporal distribution of octylphenol （OP） and nonylphenol （NP） in Mai Po Marshes, a subtropical estuarine wetland in Hong Kong, were investigated. Surface water samples were collected every month from 11 sites during the period of September- December 2004. Concentrations of OP and NP ranged from 11.3 to 348 ng/L and from 29 to 2591 ng/L, respectively. The high levels of NP and OP were found in November and December than in September and October. The levels of OP and NP have no significant spatial differences except September. Total organic matter in the sediments appeared to be an important factor in controlling the fate of these compounds in the aquatic environment.     

Laboratory-scale study of the suppression of PCDD/F emission during coal and MSW co-incineration

The experimental test of co-incinerating Chinese raw municipal solid waste （MSW） and coal in a laboratory-scale tubular reactor was first reported in present study, and the emission of normal gas components and the effects of the S/Cl molar ratio or coal mixing percentages on polychlorinated dibenzo-p-dioxins and dibenzofurans （PCDDs/Fs） emission were investigated and discussed. The results indicated that OCDD was the only PCDD homologues since others like TCDD-HpCDD was hardly detected, while as the categories of PCDF homologues were comparatively much more general. The amount of PCDD was much larger than that of PCDF in all operating conditions. Since ZPCDF/∑PCDD〈〈1, the dominant role of the precursor formation was proven in our experimental conductions. With increasing the coal addition to MSW （from 0 to 16%）, PCDD and PCDF were reduced considerably. Coal and MSW may suppress the PCDD/F emissions efficiently （over 95%） during the MSW incineration process. The PCDD/F suppression results of the present study could be helpful guidance to the industrial application of Chinese MSW and auxiliary coal co-incineration processes. The PCDD/F stack emission data of two industrial incinerators using co-incineration technology in China seem to have a great positive reduction of PCDDs/Fs.     

碱渣在公路工程应用中Cl-对环境的影响研究

在我国氨碱法生产纯碱的企业,每年都会排放大量的废碱渣,如把这些碱渣用于公路工程建设,其中所合的游离氯离子可能会对周围环境造成影响。通过对碱渣的化学成分,以及碱渣中游离Cl-与碱渣-石灰稳定土、外加固结剂之间的物理-化学作用机理的分析,并结合公路建设的工程实际,研究了游离氯离子对周围土壤和地下水质的影响。研究结果表明,工业碱渣作为公路路基的替代石灰的材料,符合国家公路建设标准和环保要求。     

Way for sustainable development of energy in China

The report of Chinese Communist Party's 18th National Congress clearly stated that the construction of ecological civilization needs to join hands with the overall layout of the construction of socialism with Chinese characteristics,and the greatest obstacle to achieving ecological civilization is the energy structure in China.Currently,the third industrial revolution—marked by green technology and cloud computing technology—is happening,and it will have a huge impact on future energy development.The fundamental way to solve the problem of energy resource constraints is developing the renewable energy,and the fundamental approach for renewable energy is developing distributed energy and services.The important factors to achieving China's energy production and consumption revolution are accelerating the construction of distributed energy system and overall energy structure adjustment in China.