ZC－1000G大流量总悬浮颗粒物采样器停电计时电路的改进

ＺＣ－１０００Ｇ大流量总悬浮颗粒物采样器停电计时电路的改进姜绍辉，印旭蓓（南通市环境监测站２２６００６）ＺＣ－１０００Ｇ大流量总悬浮颗粒物（ＴＳＰ）采样器主要有气路系统和电路系统两部份。电路系统中，有流量传感器，采样电机和稳流控制电路组成的稳流系统，...     

金昌市环境空气中二氧化硫与总悬浮颗粒物污染规律及特征分析

通过对金昌市环境空气中二氧化硫和总悬浮颗粒物污染趋势分析，说明其污染变化规律。     

用校正空白称量法测定总悬浮颗粒物的总结

总悬浮颗粒物,又称总悬浮微粒(简称TSP),粒径为0.1～100微米,是监测环境大气质量的主要项目之一。其测定方法常用重量法。即:使一定体积的空气,通过已恒重过的滤膜,根据采样前后滤膜重量之差及采样体积,即可计算总悬浮颗粒物的浓度。目前称量滤膜的方法有三种: 1.恒温恒湿称量: 要求在具备恒温恒湿条件的天平室称量。     

莱芜市颗粒物源解析

通过受体模型对莱芜市大气中总悬浮颗粒物的来源进行了定性识别和定量分析。确定了排放源的种类和排放源的贡献，就可以将有限的资金投入到重点污染源的治理．     

总悬浮颗粒物（TSP）与可吸入颗粒物（PM10）的污染状况比较

通过对比实验找出福州市总悬浮颗粒物与可吸入颗粒物之间存在的关系，摸清城市空气中两者的分布规律，使自动监测系统在获取数据时具有准确性，在监测结果上具有一致性和连续性。     

高等级公路施工期进行环境监测的必要性

提出了通过对高速公路施工期环境空气中总悬浮颗粒物、噪声的监测，了解其污染程度和范围，同时为环境保护管理部门建立公路施工期环境监测工作并纳入建设工程竣工验收检查提供重要依据．     

环境空气中颗粒物组成成份分析

本文通过对环境空气中可吸入颗粒物与总悬浮颗粒物的监测分析，得出了二者在春、夏、秋、冬季的分布及所占比例，为进一步研究环境空气中污染源奠定了基础．     

苏州市大气污染状况及其变化规律分析

根据１９９０￣１９９４年苏州市大气二氧化硫及总悬浮颗粒物（ＴＳＰ）等监测结果，评价苏州市大气污染状况，揭示了污染变化规律，分析大气污染的原因，为该市环境管理提供了科学依据。     

连续监测中影响总悬浮颗粒物监测质量的因素

在空气环境质量监测中,采用滤膜采样-重量法监测总悬浮颗粒物,监测结果受客观及主观因素的影响较大。因此,在采样和分析过程中必须严格控制各种条件,以提高测量结果的准确性。1　采样1 1　采样流量的影响采样时,采样器的准确度取决于采样流量保持恒定的程度。光化学烟雾、油状颗粒物等均可阻塞滤膜并造成空气流速不匀,使流量迅速下降;浓雾或高湿度空气使滤膜变得太潮,也会使流量明显下降[1]。因此,在能见度低或高湿度天气,可采用分段采样,集中累加,以降低因流量变化对总悬浮颗粒物测量的影响。1 2　气象条件的影响在采样体积与标准体积…     

重庆市主城区大气环境质量变化分析及对策研究

对重庆市主城区大气污染因子二氧化硫、氮氧化物、总悬浮颗粒物近年来的变化进行了分析,并对大气环境质量变化的影响及原因进行了研讨,提出了综合控制及治理的对策和措施,以期对重庆市经济大力发展和造就良好的人居环境提供有价值的依据和理论指导。     

校园空气微生物和悬浮物污染评价及相关性分析

在对广西师范大学育才校区教学区、宿舍区、运动场和交通区大气微生物和总悬浮颗粒物(TSP)进行监测的基础上,评价与分析了育才校区大气污染状况。依照中国科学院生态中心推荐使用的空气微生物评价标准,育才校区大气微生物污染轻微,其中交通区和运动场大气微生物含量相对较高,但都能达到清洁空气的标准;大气总悬浮颗粒物污染下午较严重,多数测定值超过了国家环境空气质量标准中的二级标准限值,而上午的测定值相对较低;四个功能区中TSP浓度值为交通区>运动场>教学区>宿舍区。上午空气中TSP浓度与细菌总数具有显著相关性,与霉菌总数相关关系不显著;下午TSP测定值与空气中细菌总数和霉菌总数的相关关系均不显著;校园空气中细菌总数和霉菌总数为极显著相关。     

灰色系统模型在总悬浮物预测中的应用

以１９８６－１９９４年东北某城市总悬浮物统计资料为依据，应用灰色系统理论ＧＭ（１，１）模型对总量浮物数值进行预测分析。     

Distribution and partition of polycyclic aromatic hydrocarbon in surface water of the Pearl River Estuary, South China

Water samples were collected in the Pearl River Estuary in July 2002 and April 2003. The particulate and dissolved phase polycyclic aromatic hydrocarbons (PAHs) were determined. Total PAH concentrations in water samples were higher in April of 2003 (C (p): 4.0-39.1 ng/L or 445.1-1,089.9 ng/g; C (w): 15.9-184.2 ng/L) than in July of 2002 (C (p): 2.6-26.6 ng/L or 297.7-1,336.6 ng/g; C (w): 12.9-28.3 ng/L). It was found that 5, 6-ring PAHs enrich in the inner estuary samples and so did 3-ring PAHs in the July samples. Compositional differences in the suspended particulate matter (SPM) might be responsible for this observation. The partition coefficient (K (p)) increased with the increasing of the particular organic carbon content of suspended particles as well as the salinity of water, decreased with the increase of the total suspended particles content of samples. A linear correlation between logK (OC) and logK (OW) was found in two sampling periods. The observed values of logK (OC) exceed their predicted values derived form linear free energy relationship between logK (oc) and logK (ow), which could be attributed to the nonlinear sorption of soot-like carbons in suspended particles.     

新疆三地区总悬浮颗粒(TSP)中单颗粒的微观形貌特征

用扫描电镜/X射线衍射能谱(SEM/EDX)对喀什地区、乌鲁木齐市米东区、和田地区的总悬浮颗粒(TSP)的单个颗粒进行了形貌观察。经分析得出:喀什地区颗粒物无规则形为34%,片状为54%;和田地区的颗粒物片状为80%,球形为12%;乌鲁木齐市米东区的颗粒物均匀球形蜂窝聚集态为90%。对此作来源解析可以认为:乌鲁木齐市米东区的TSP主要来源是燃烧排放的飞灰及在大气中形成的二次粒子居多,而喀什地区及和田地区的TSP主要来源为土壤及矿物颗粒灰尘。     

超声波萃取-高效液相色谱法测定总悬浮颗粒物中的多环芳烃

研究了一种用中流量采样器采样,超声波萃取,硅镁型吸附剂柱层析预分离.高效液谱测定总悬浮颗粒物的实验方法,在16分内可分高萘、蒽、芘、苯并(a)芘、苯并(ghi)苝等15种多环芳烃.已在大气环境的实际监测中得到应用.     

空气中总悬浮颗粒物的X射线衍射定性分析研究

以天津市环境监测中心采集的空气中总悬浮颗粒物（ＴＳＰ）膜（９７１０１２号）为样品,使用日本理学Ｄ／ｍａｘＲＡＸ射线衍射仪对其进行化合物定性分析,并介绍样品的采集与制样方法、仪器测试条件。最后通过ＪＣＰＤＳＩＣＤＤ（国际粉末衍射数据中心）标准数据库检索出该样品所含的全部化合物     

The importance of small urbanized watersheds to pollutant loading in a large oligotrophic subalpine lake of the western USA

Urban land use has been implicated as a major contributor of nonpoint source pollution in aquatic systems. Through increased nonpoint delivery of pollutants, including constituents found in stormwater, Lake Tahoe is undergoing a marked decline in its transparency, primarily due to increasing production of algae from enhanced nutrient loading and delivery of fine particles to the lake from the watershed. In response to these findings, a regional restoration effort is underway to improve basin watersheds and the water quality in Lake Tahoe. In this study, stormwater autosamplers were used to collect flow-weighted composite samples that characterized event mean concentrations for event and nonevent conditions within a small, urbanized watershed in the Tahoe basin. An event-specified constant-concentration water quality model was then applied to the event mean concentration and continuous streamflow data to estimate pollutant loads for nitrate, nitrite, ammonia, orthophosphate, and suspended sediment. These data were compared with previously reported load estimates from 10 primary monitored streams in larger watersheds of the Tahoe basin. Results from a linear regression analysis demonstrate strong and significant relationships between watershed impervious area and pollutant loadings from Lake Tahoe watersheds. These small, urbanized watersheds and intervening zones, which only comprise 10 % of the total Lake Tahoe drainage area, include a significant portion of the total Lake Tahoe impervious area. The findings of this study suggest that small, urbanized watersheds and intervening zones are disproportionately important contributors of nonpoint source pollution, including nutrients and suspended particles.     

Chemical and micromorphological properties of TSP and PM10 particles: case study in Bucharest urban area

The purpose of this work was to determine some aspects of micromorphology of total suspended particles (TSP) and particulate matter with aerodynamic diameter ≤10 μm (PM(10)) and their major elemental components in order to highlight the main characteristics of the atmospheric particles from an urban environment, having a case study in the urban area of Bucharest. The sampling of PM(10) and TSP were conducted in the close vicinity of a high traffic road for 72 h per sample and also priority pollutants in air: Pb and Cd were quantified and correlations between their concentrations and local wind directions were also found. The parameters characterizing the micromorphology of particle-roughness of the particle surface and area of particle-were correlated with wind direction.     

Particle size distribution of aerosols and associated heavy metals in kitchen environments

Mass size distributions of total suspended particulate matter (TSPM) was measured from Sep 2002 to April 2003 in indoor kitchen environments of five locations in Jawaharlal Nehru University (JNU), New Delhi, with the help of a high volume cascade impactor. Particulate matters were separated in five different size ranges, i.e. >10.9 microm, 10.9-5.4 microm, 5.4-1.6 microm, 1.6-0.7 microm and <0.7 microm. The particle size distribution at various sites appears to follow uni-modal trend corresponding to fine particles i.e. size range <0.7 microm. The contributions of fine particles are estimated to be approximately 50% of TSPM and PM10.9, while PM10.9 comprises 80% of TSPM. Good correlations were observed between various size fractions. Regression results reveal that TSPM can adequately act as a surrogate for PM10.9 and fine particles, while PM10.9 can also act as surrogate for fine particles. The concentrations of heavy metals are found to be dominantly associated with fine particles. However, the concentration of some metals and their size distribution, to some extent is also site specific (fuel type used).     

Estimation of bacteriological levels in surface water samples to evaluate their contamination profile

The present work deals with the assessment of bacteriological contamination along with some physico-chemical parameters of water samples from Lahore canal. ANOVA showed that the observed p values of log-transformed viable plate counts, total suspended solids, turbidity, and biological oxygen demand are 0.000, 0.000, 0.000, and 0.000, respectively, which are <0.05, while the p value of total coliforms, total fecal coliforms, and Escherichia coli are 0.728, 0.827, and 0.081, respectively which are >0.05. Significant correlation was observed between log-transformed viable plate counts (CFU), biological oxygen demand, total suspended solids, and turbidity. Further regression analysis revealed that simple line regression model is fit for log-transformed viable plate counts and total suspended solids, log-transformed viable plate counts and turbidity, turbidity and total suspended solids, biological oxygen demand and total suspended solids, biological oxygen demand and log-transformed viable plate counts, and biological oxygen demand and turbidity.