上海市在用车监测与维修制度探讨

根据上海市机动车辆的管理现状，提出上海市在用车I/M制度体系网络、监测方法、数据收集网络与“通过/不通过”排放限值方面的基本设想，为建立一个真正有效的在用车监测与维修制度提供依据。     

蚕豆根尖微核技术监测工业废水遗传毒性

用蚕豆根尖微核技术监测淮阴市冶金、化工、印染及制药行业废水的遗传毒性，结果表明淮明市部分工厂废水存在不同程度的遗传毒性。     

人工湿地污水处理技术及其发展现状

人工湿地与传统的污水处理法相比具有基建、运行费用低，操作与维护简单等优点。总结了人工湿地系统的研究现状和目前存在的问题，并指出了其未来的发展方向。     

用X射线光电子能谱(ESCA)和加热释气分析法(EGA)初步探讨北京大气飘尘中硫和氮等的化学状态

用X射线光电子能谱和加热释气分析法测定了三种北京大气飘尘中硫和氮等的主要化学状态,并结合两种不同配料蜂窝煤所得烟尘和个别煤样的电子能谱进行了初步探讨。     

经济增长的生态环境代价及思考

以可持续发展理论为指导，分析了重庆市经济增长的生态环境代价，对目前的经济增长方式作了深刻反思、据测算、重庆市仅生态破坏、大气污染、水污染造成的经济损失就占全市ＧＤＰ的１６．１％。要改变不合理的发展方式，必须落实可持续发展的发展战略、转变经济增长方式，增加生态环境保护投入，加强资源与环境核算和环境法制工作。     

污水处理的改良型SBR工艺

简要介绍了一种新型污水处理工艺———改良型序批式活性污泥法。主要介绍了它的结构组成、流程控制、生物脱氮除磷基本原理、自动化管理。     

九黄公路水土保持方案的探讨

通过对九黄公路沿线水土流失的原因和特点的分析，对工程沿线的水土流失进行了预测，并对具体的防治措施进行了探讨。     

Vertical and horizontal movements of striped marlin (Tetrapturus audax) near the Hawaiian Islands,determined by ultrasonic telemetry,with simultaneous measurement of oceanic currents

We measured the vertical and horizontal movements of striped marlin (Tetrapturus audax) off the leeward coast of the Island of Hawaii between 20 November and 18 December 1992 while simultaneously gathering data on water temperature and oceanic currents. Fish movements were monitored by ultrasonic depth-sensitive transmitters, depth-temperature profiles by an expendable bathythermograph system, and oceanic current patterns by an acoustic Doppler current profiler. Like Indo-Pacific blue marlin (Makaira mazara), striped marlin near Hawaii spend >85% of their time in the mixed layer (i.e., above 90 m depth). The maximum depth for striped marlin appears to be limited by water temperatures 8 C° colder than the mixed layer, rather than by an absolute lower temperature. We also found that the horizontal displacements of some striped marlin can be strongly influenced by currents.     

Enhanced degradation of chlorinated ethylenes in groundwater from a paint contaminated site by two-stage fluidized-bed reactor

Groundwater, used in this study, contaminated predominantly with aromatic compounds, was biologically treated in a fluidized-bed reactor (FBR) with immobilized cells. The aromatics were completely decomposed, while cis-1,2-dichloroethylene (cis-DCE) and trichloroethylene (TCE) were decomposed only approximately 20% and 5%, respectively. In these studies a significant improvement of the decomposition efficiency for chlorinated ethylenes was achieved by utilizing cometabolism. Methanol (MeOH) and toluene were used as the substrate in the case of one-stage reactor (Single Reactor). MeOH (187 mg l(-1)) increased the decomposition efficiency up to 40% and 60% for cis-DCE and TCE, respectively, while toluene (20 mg l(-1)) increased the decomposition efficiency of cis-DCE to 92% and the decomposition efficiency of TCE to 76%. In the case of two-stage reactor system (Reactor 1 and Reactor 2), MeOH and methane (CH4) were used as the substrate. In this system, cells grown on MeOH or CH4 in the Reactor 1 were continuously fed into Reactor 2 and groundwater was fed into Reactor 2 only. When MeOH (384 mg l(-1) d(-1)) was used as substrate the decomposition efficiency of cis-DCE and TCE were 60% and 70%, respectively. Similar decomposition efficiency was observed for a small amount of CH4 (19.3 mg l(-1) d(-1)).     

Estimation of PAHs dry deposition and BaP toxic equivalency factors (TEFs) study at Urban, Industry Park and rural sampling sites in central Taiwan, Taichung

The concentrations of polycyclic aromatic hydrocarbons (PAHs) in gas phase and particle bound were measured simultaneously at industrial (INDUSTRY), urban (URBAN), and rural areas (RURAL) in Taichung, Taiwan. And the PAH concentrations, size distributions, estimated PAHs dry deposition fluxes and health risk study of PAHs in the ambient air of central Taiwan were discussed in this study. Total PAH concentrations at INDUSTRY, URBAN, and RURAL sampling sites were found to be 1650 +/- 1240, 1220 +/- 520, and 831 +/- 427 ng/m3, respectively. The results indicated that PAH concentrations were higher at INDUSTRY and URBAN sampling sites than the RURAL sampling sites because of the more industrial processes, traffic exhausts and human activities. The estimation dry deposition and size distribution of PAHs were also studied. The results indicated that the estimated dry deposition fluxes of total PAHs were 58.5, 48.8, and 38.6 microg/m2/day at INDUSTRY, URBAN, and RURAL, respectively. The BaP equivalency results indicated that the health risk of gas phase PAHs were higher than the particle phase at three sampling sites of central Taiwan. However, compared with the BaP equivalency results to other studies conducted in factory, this study indicated the health risk of PAHs was acceptable in the ambient air of central Taiwan.