五种多环芳烃化合物对鲤鱼肝微粒体芳烃羟化酶的诱导

以鲤鱼肝微粒体为实验体系,研究了被五种多环芳烃(PAH)化合物菲、9,10-菲醌、芘、1-羟基芘、苯并芘污染后,其芳烃羟化酶(AHH)的活性变化,发现多环芳烃对AHH的诱导具有良好的剂量效应关系.AHH活性升高的大小可以作为监测多环芳烃对水体污染程度的一种生物指标.五种多环芳烃对AHH诱导能力的大小为1-羟基芘＞苯并芘;9,10-菲醌＞芘＞菲,与其毒性大小相关.     

呼和浩特学生尿中1—羟基芘的抽样分析

用反相高压液相色谱对呼市小学生及对照点草原牧民尿中的１－羟基芘进行测定，同时测定两地区大气颗粒物及空气中多环芳烃的含量。结果表明，市区小学生尿中１－羟基芘的浓度采暖季节高于非采暧季节；且显著高于对照点的浓度；尿中１－羟基芘的浓度与空气中全态多环芳烃（ＰＡＨｓ）的代表化合物芘或ＢａＰ有很好的正相关。     

马鞍山市大气环境中苯并(a)芘分布与变化规律研究

研究了马鞍山市大气环境中苯并（a）芘的分布与变化规律，监测了马鞍山市各功能区，新老市区的居民区及交通要道大气环境中苯并（a）芘的含量，该市功能区内的工业区大气中苯并（a）芘污染严重，最高质量浓度达50．31ng/m^3，居民区内老市大气中的苯并（a）芘污染明显高于新市区，究其原因，老市区是马鞍山，市工业发源地，属居民，商业及工业混合区，研究中发现，大气中苯并（a）芘含量高低有季节性的昼夜变化现象，时空分布和迁移变化规律明显，并且大气中总悬浮颗粒物与苯并（a)芘的相关性显著。     

多环芳烃的生物监测指标——尿中1-羟基芘的测定方法

材料和方法 一、试剂与仪器:1-羟基芘为实验室合 成,经元素分析、红外光谱、GC/MS等测定证实为色谱纯:肌酐为德国Fluka A.G品:甲醇为HPLC专用试剂(上海吴泾化工厂)     

张掖地区造纸厂废水灌溉区域微型生物调查研究

通过对造纸废水流经灌区不同点进行微型生物监测 ,从微型生物的指示性角度出发 ,来说明造纸废水水质污染状况。通过监测得知 ,废水灌区微型生物共有 3 8种。其中藻类 1 0种 ,原生动物 2 8种。 3 8种微型生物均属多污性、α-中污性或 β-中污性种类 ,说明造纸废水治理效果较差且对灌区农作物及生态污染较严重。如何解决废水污染及灌区对废水的依赖性 ,应引起有关部门的重视。     

北京市水生态监测评价方法构建及应用

根据北京市多年水生态监测的经验，确立了典型地表水体水生态监测的水文地貌、理化指标和生物要素。其中，生物要素评价因子主要包括浮游植物、浮游动物和底栖动物。并依据2014年监测结果进行了分析评价，将水生态状态等级分为5级。评价结果表明：北京市典型地表水体水生态状态综合评价结果中处于"中等"级别的监测断面数量为7个，占监测总数的41.2%，生物要素对最终评价结果影响略大。     

大同市大气颗粒物浓度与水溶性离子季度分布特征

为研究大同市大气颗粒物质量浓度与水溶性离子组成特征,于2013年2、7、9、12月,分别对大同市及其对照点庞泉沟国家大气背景点进行了PM2.5及PM10的采样,通过超声萃取-IC法测定了样品中的9种水溶性离子,结果表明,大同市大气颗粒物污染1、4季度重于2、3季度,PM2.5季度均值全年均未超标,PM10仅第1季度超标1.4倍,污染状况总体良好,PM2.5与PM10相关系数R为0.75,说明大同市颗粒物污染有较为相近的来源,且不同季节均以粗颗粒物为主;大同市PM2.5中水溶性离子浓度分布为SO2-4、NO-3、NH+4Cl-、Ca2+K+、Na+F-、Mg2+,PM10中Ca2+浓度仅次于SO2-4、NO-3,控制扬尘将有效降低PM10的浓度;PM2.5及PM10中的9种水溶性离子在不同季度的浓度与颗粒物浓度分布规律类似,1、4季度较高,2、3季度较低;由阴阳离子平衡计算结果可知,相关性方程的斜率K为1.045,表明大同市大气颗粒物中阳离子相对亏损,大气细粒子组分偏酸性。NO-3与SO2-4浓度比值均小于1,大同市以硫酸型污染为主,大气中的SO2-4主要来源于人类活动排放。     

煤化工厂烟气中苯并(a)芘现状监测分析

通过试验建立了煤化工厂烟气中苯并(a)芘的液相色谱监测分析方法.通过条件优化,用配有荧光检测器的高效液相色谱仪分析烟气样品中苯并(a)芘的含量,该方法以乙腈、水梯度比例混合作为流动相;流速为1.0 ml/min;激发波长为255nm、发射波长为420nm;保留时间为27.38 min,测定检出限为2×10-3μg/m3...     

沥青烟中苯并(a)芘的等速采样与监测

新的大气污染综合排放标准对沥青及碳素制品生产和加工制定了沥青烟和苯并(a)芘的排放标准,然而空气和废气监测分析方法没有给出沥青烟气中苯并(a)芘的分析方法.为此,用色谱固定液滤筒及新设计的富集器等速采样,进行沥青烟苯并(a)芘的分析,为执行新的大气污染综合排放标准提供了实用技术.     

生物监测在跨界河流中的应用进展

综合分析了生物监测在跨界河流流经国家间的协调管理、生物类群的选择以及监测技术的选择方面所面临的问题;选择欧洲多瑙河、亚洲湄公河以及非洲尼日尔河等跨界河流作为典型案例,对比分析使用不同生物类群(例如底栖动物、浮游藻类以及鱼类)进行跨界河流生物监测的技术方法,阐述了跨界生物监测项目中的资金来源、管理办法和运行机制等;并对未来的跨界河流生物监测提出建议,以期为中国的跨界河流生物监测提供实践依据。     

微塑料及卤代有机污染物在洞庭湖的赋存研究进展

洞庭湖是中国第二大淡水湖,其生态价值十分重要。目前洞庭湖新污染物相关研究比较缺乏,也没有系统的综述进行归纳总结。微塑料和卤代有机污染物是近年来备受关注的新污染物,搜集历年研究成果,对这2类污染物在洞庭湖的污染水平、分布方式、污染来源进行归纳总结：洞庭湖微塑料污染水平在世界范围内处于中等,其主要来源包括上游输入、居民日常生活、农业生产及工业生产,湖泊各区域微塑料污染水平差异明显。卤代有机污染物在洞庭湖的浓度呈现随时间推移而降低的趋势,目前整体生态风险较低,但生物累积效应仍然值得警惕。在未来研究中应当关注河流与湖泊之间的相互影响,探究微塑料和卤代有机污染物对洞庭湖区生物造成的生物毒性,建立科学完善的监测方法并结合湖区具体情况对污染防治措施及污染物处理技术开展研究。     

大同市地表水及工业废水中氯苯和酚类化合物的监测

对流经大同市的主要河流和重点工业污染源所排放废水中的氯苯和酚类化合物做了分析测定.对酚类化合物的测定方法进行了改进.研究表明,大同市污染源对御河氯苯类污染物贡献较小,焦化厂酚类化合物排放量较高.     

运用灰色系统的GM（1，1）模型对城市噪声的综合预测

应用GM（1，1）模型，对大同市各功能区环境噪声进行综合预测，得出了大同市未来几年城市噪声的变化趋势。     

The influence of the methods of measuring odours nuisance on the quality of life

Quality of life in urban space has become an increasingly common problem arising from cooperation between various stakeholders, especially in the context of increasing odour nuisance. That is why it is extremely important to know and shape the expectations and perceptions of residents regarding quality of life by accepting the place of residence, especially in the context of the development of cities and urban areas.The analysis of the previous research has revealed a research gap that results from the imperfections of existing odour measurement methods and the lack of an objective measurement methodology that would allow for objectification of the subjective feelings of people to the extent of perception of unpleasant odours.The purpose of this article is to verify the hypothesis about the possibility of objectifying the assessment of odour nuisance based on the comparison of quantitative research results based on the opinions of residents and sensory tests. The specific objective is to verify residents' assessments of odour nuisance by an expert team and identify a gap in those assessments.The analysis of discrepancies gives the opportunity to identify the imperfections of various research methods and look for ways to improve them. The analysis of compliance of results, on the other hand, gives the opportunity to objectify measurements and build a methodology that may be used for the purpose of assessing odour nuisance by various stakeholders.Systematic measurement of odours in a public space may serve the basis for resolving local conflicts, creating maps of odour nuisance, assessing the attractiveness of places to live, work, spending free time and tourist value, as well as conscious actions of public authorities in shaping local policies in a specific area.     

The application of HPLC-F and GC-MS to the analysis of selected hydroxy polycyclic hydrocarbons in two certified fish bile reference materials

Four selected hydroxy polycyclic aromatic hydrocarbons (OH-PAHs), 2-hydroxy-naphthalene (2-OH-NPH), 1-hydroxy-phenanthrene (1-OH-PHE), 1-hydroxy-pyrene (1-OH-PYR) and 3-hydroxy-benzo[a]pyrene (3-OH-BaP) have been analysed in two certified fish bile reference materials (CRMs) for exposure monitoring of PAHs in the aquatic environment. The two materials, BCR 720 and BCR 721, consist of bile from fish exposed to contaminated sediment and dispersed crude oil, respectively. Both bile samples have been analysed by two different analytical techniques, gas chromatography-mass spectrometry (GC-MS) and high performance liquid chromatography-fluorescence detection (HPLC-F), and the separation performance, detection limits, recoveries and reproducibility for the four target compounds were evaluated. HPLC-F requires a simple sample preparation and the separation capacity is adequate for quantification of 1-OH-PYR and 3-OH-BaP. Detection limits are excellent for 1-OH-PYR (6 pg injected) and 3-OH-BaP (3 pg injected) and generally improved with increasing molecular size. Recoveries ranged from 48 to 99% for the four selected compounds, depending on compound and concentration. Sample preparation prior to GC-MS analysis was more demanding, as reflected by the obtained recoveries for 2-OH-NPH, 1-OH-PHE and 1-OH-PYR (35 to 61%). The sensitivity improved with decreasing molecular size, 2-OH-NPH (1.2 pg injected), 1-OH-PHE (2.4 pg injected) and 1-OH-PYR (6 pg injected). Because of the superior separation power of GC and the extra selectivity of MS detection, GC-MS was the method of choice for the determination of 2-OH-NPH and 1-OH-PHE in both CRMs. In fish bile samples these two compounds are more likely to suffer from chromatographic overlap, and HPLC-F was not sufficiently selective. Determination of 1-OH-PYR was performed with success by both methods, but HPLC-F would be preferred because of the simpler and less time-consuming sample preparation. Detectable concentrations of 3-OH-BaP were present in BCR 720 and could only be determined by HPLC-F. The present work aims to present HPLC-F and GC-MS as complementary methods for the quantitative analysis of OH-PAHs in fish bile.     

Urinary 8-hydroxy-2'-deoxyguanosine in inhabitants chronically exposed to arsenic in groundwater in Cambodia

Arsenic concentrations in hair and urine, and urinary levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG), a marker of oxidative DNA damage, were examined for inhabitants of the Mekong Basin in Kratie Province, Cambodia. Also, the arsenic levels of tube-well water were determined. Total arsenic concentrations in tube-well water ranged from <1 to 886 microg L(-1), and 44.8% of these exceeded the WHO drinking water guideline of 10 microg L(-1). Elevated levels of arsenic were observed in the human hair and urine, and also a significant positive correlation was observed between the concentrations in hair and urine. These results suggest that the inhabitants are chronically exposed to arsenic through drinking the tube-well water. Levels of urinary 8-OHdG were higher for the subjects with higher arsenic levels in hair and urine, suggesting that induction of oxidative DNA damage was caused by chronic exposure to arsenic in tube-well water for the inhabitants in Kratie Province. To our knowledge, this is the first report on the oxidative DNA damage caused by chronic exposure to arsenic in groundwater for the inhabitants in Cambodia.     

Air pollution exposure monitoring and estimation. Part II. Model evaluation and population exposure

The air pollution dispersion model EPISODE has been developed at the Norwegian Institute for Air Research (NILU) over the past several years in order to meet the needs of modern air quality management work in urban areas. The model has recently been used as a basis for exposure calculations of NOx and NO2 in order to assess the effects of different traffic diversion measures on health and well being for the residents in the V?lerenga-Ekeberg-Gamlebyen area in Oslo. Here we describe some results from the most recent evaluations of the model for NOx and NO2 at station Nordahl Brunsgate in Oslo for the period 1 October 1996-19 November 1996. In addition examples of population exposure calculations for Oslo performed during the winter period of 1995-96, are also presented.     

Assessment of flood adaptive capacity of urban areas in Thailand

Urban floods have a significant impact on the economy, livelihoods, and daily activities. Despite extensive research on flood adaptation, there is a lack of consensus on ways to assess flood adaptive capacity. This research thus proposes an assessment framework of flood adaptive capacity of urban residents in flood-prone areas. The indicators are based on six components: economic resources, social capital, awareness and training, technology, infrastructure, and institutions and policies. The relevancy of the indicators was evaluated by experts in related fields, and a questionnaire was developed to collect data from a random sample of 230 households in 10 flood-prone municipalities in Thailand. Statistical analysis and structural equation modeling were subsequently performed to validate the components and indicators, and a flood-adaptability questionnaire was constructed. As a trial implementation, the questionnaire was applied to a target flood-prone municipality, Phetchaburi, to assess its adaptive capacity to flooding, expressed as flood adaptive capacity index. The adaptive capacity of Phetchaburi municipality to flooding was found to be high indicating the improvement in economic resources and infrastructure components. These findings reveal that the proposed framework is suitable for assessing the flood adaptive capacity of urban residents and useful for integrated flood risk assessment and management.     

Residents’ concerns and attitudes toward a municipal solid waste landfill: integrating a questionnaire survey and GIS techniques

The ever-growing industry of municipal solid waste (MSW) disposal appeals to the growing need for disposal facilities, and MSW treatment facilities are increasingly an environmental and public health concern. Residents living near MSW management facilities are confronted with various risk perceptions, especially odour. In this study, in an effort to assist responsible decision-makers in better planning and managing such a project, a structured questionnaire was designed and distributed to assess the nearby residents’ concerns and attitudes surrounding the Laogang Landfill in Shanghai. Geographic information system techniques and relevance analysis were employed to conduct the spatial analysis of physical perceptions, especially odour annoyance. The findings of the research indicate that a significant percentage of the responding sample was aware of the negative impacts of landfills on the environment and public health, and residents in close proximity preferred to live farther from the landfill. The results from the spatial analysis demonstrated a definite degree of correlation between odour annoyance and distance to the facility and proved that the benefits of the socially disadvantaged have been neglected. The research findings also direct attention to the important role of public participation, information disclosure, transparency in management, and mutual communication to avoid conflicts and build social trust.