废水中含磷表面活性剂的测定

应用非水电位滴定法测定了废水中各种烷基磷酸酯钾盐及其单、双酯盐。方法的变异系数分别为２．３％和７．８％（ｎ＝１２）。本法可有效地消除非离子表面活性剂的干扰，适用于化纤油剂的质量检验和上油槽中油剂浓度的测定。     

A fetus with a parvovirus B19 infection and congenital anomalies

A fetus with multiple structural defects was seen at prenatal ultrasound examination. After termination of the pregnancy a bilateral cleft lip, alveolus, and palate; micrognathia; and webbed joints were seen. Fetal tissues showed indications of infection, intranuclear inclusion bodies, chronic stress, haemolysis, arterial wall damage, and profuse haemorrhage. Parvovirus B19 DNA was detected in fetal tissues by dot hybridization after polymerase chain reaction. The possibility of parvovirus B19 infection leading to congenital malformations is discussed.     

城郊道路交通污染个例分析

为建立和研究适合地面道路的宽路幅、高等级、支路多等特点的大城市城郊道路交通大气污染扩散模式,选取了受环境外来源影响较小的上海市沪青平公路的徐泾段,作交通大气污染实测和相关气象因子项目的观测。在获得详细实测结果的基础上,以NOx为例分析了大气稳定度、风向、风速、交通量对城郊地面道路交通污染扩散的影响。     

选矿尾砂综合利用的探讨

对选矿尾砂采用再磨再选工艺回收尾矿砂中的金、银、铜、铁 ,再选尾砂采用全尾砂水淬渣膏体充填技术充填井下采场 ,实现微渣排放 ,再选产生的废水经净化处理后回用于选矿作业     

降低油品储运损耗 改善大气环境

从石油开采到成品油进入清费的过程中，损耗量约占原油量的3％－5％，其中储运过程中的损耗占总耗的40％－50％，着重论述了油品储运过程中降低损耗的措施，以减少经济损失和对环境的破坏。     

First-trimester diagnosis of duodenal stenosis associated with oesophageal atresia

Duodenal stenosis associated with oesophageal atresia was diagnosed by ultrasound at 12 weeks' gestation. The diagnosis was made by recognition of a double bubble sign which was more pronounced when a vaginal transducer was used. Post-abortion autopsy confirmed the diagnosis. Oesophageal and duodenal obstruction in this case had no effect on the amount of amniotic fluid or the alpha-fetoprotein concentration since swallowing and subsequent utilization of amniotic fluid do not occur before 12 weeks of gestation.     

Effects of atmospheric gases on terrestrial plants and critical levels of air pollution

An integrated approach was developed to determine the critical levels of air pollution for ecological standard setting based on the unified index of biological response, by taking into account the effects of all pollution components simultaneously. An empirical model of plant productivity was taken as the dose response model for gaseous pollutant effect on the productivity of trees and the annual productivity of plants was used as the above mentioned index. The CO2 increase in the lower atmosphere was considered to potentially increase plant productivity and NO2 was estimated as neutral while being dangerous for plants as a chemical precursor of ozone or as a source of acidification. The maximum permissible chronic O3 and SO2 levels for trees were estimated and it was found that O3 is much more phytotoxic, as compared to SO2 , with a rather narrow range of permissible levels (27-33 ppb) which complicates its monitoring and control.     

上海市机动车排污状况与污染控制战略

通过对上海市中心城区机动车行驶工史现状的主要特点及发展趋势的分析，计算出中心城区１９９５年机动车尾气排放的ＣＯ、ＮＭＨＣ和ＮＯｘ负荷，分别占区域内机动车和固定源产排放总量的７６％、９３％和４４％，据预测，到２０１０年，中心城区内机动车排出的ＣＯ、ＮＭＨＣ和ＮＯｘ负荷，将分别占区域中机动车和固定源排放总量的９４％、９８％和７５％，因此，针对机动车排污所面临的严峻挑战，需要采取加强机动车检查与维修（Ｉ     

关于农业污染纠纷综合处理的思考

揭示了农业污染纠纷的内涵,提出了处理农业污染纠纷的４个“支撑点”,即运用农业技术先行界定,运用监测数据科学鉴证;运用因果关系逻辑推定,强化环境管理,疏通综合处理渠道等。     

2019年西安首场雾霾PM2.5关键特征的综合诊断

通过对WRF-Chem（Weather Research and Forecasting Model Coupled to Chemistry）环境模式模拟资料、HYSPLIT（HYbrid Single Particle Lagrangian Integrated Trajectory Model）前/后向气团轨迹资料、环境站监测资料，以及西安理工大学（Xi''an University of Technology，简称XUT）多波长激光雷达、米散射激光雷达、能见度仪、粒谱仪等观测资料的综合诊断，探讨了2019年1月初发生在西安的雾霾过程（记为首场雾霾）PM_2.5组分、分布及传输特征，旨在为雾霾气溶胶研究提供有益的个例积累.定性、定量双重检验表明，Chem模式较成功复制了此次雾霾气溶胶过程.利用这些可靠的模式数据分析表明，PM_2.5中碳气溶胶的主要组分为有机碳，约占85%，强盛期气溶胶各组分随高度增加均呈递减趋势，各组分近地面浓度最高.通过对两类不同方法获取的消光系数对比分析表明，相比于模式数据，激光雷达数据具有更高的垂直分辨率，因此，更善于描述消光廓线的细节特征.通过对多源资料的综合诊断最终揭示出，"北风涌"是雾霾消散的关键影响因子，沿铜川-西安-山阳一带存在着污染物传输的重要路径，雾霾由此体现出自北向南依次消散的特征.