南京市硫酸盐化速率地方标准的制定

研究ＳＯ＿２与硫酸盐化速率的相关关系，以ＧＢ３０９５－８２（大气环境质量标准）中的ＳＯ２标准为基础，并借鉴国外先进国家的标准和硫酸盐化速率植物试验的成果，结合南京市大气环境质量现状，制定适合于南京地区的大气硫酸盐化速率建议标准．     

大气SO2硫酸盐化速率与环境因子的相关关系

建立了大气中ＳＯ_２的硫酸盐化速率与大气环境因子的相关关系，并对硫酸盐化速率标准进行探讨。     

阿克苏市大气硫酸盐化速率与SO2浓度非显著性相关原因的探讨

计算了阿克苏市大气环境中硫酸盐化速率和ＳＯ２浓度之间的相关系数，同时探讨了在部分监测点的大所环境中，由于硫酸盐化速率和ＳＯ２浓度较低等原因，两者之间未形成具有规律性的正相关性。     

乐山市大气中二氧化硫与硫酸盐化速率、降水硫酸盐的相关性分析

乐山市大气中二氧化硫与硫酸盐化速率、降水硫酸盐的相关性分析赵志坚（乐山市环保科研监测所６１４０００）大气中的硫化物主要是ＳＯ２、ＳＯ３、Ｈ２Ｓ、Ｈ２ＳＯ４及硫酸盐，ＳＯ存在大气中大多被氧化成硫酸雾和硫酸盐气溶胶，降水能将大气中的可溶性成分以及颗粒物清...     

离子色谱法同时测定水中的SeO_3~（2－）和SeO_4~（2－）

用抑制型离子色谱法探讨了ＳｅＯ３（２）和ＳｅＯ４（２－）等七种阴离子的洗脱行为，讨论了共存阴离子的干扰及其消除，建立了测定水中ｓｅＯ３（２－）和ＳｅＯ４（２－）等阴离子的方法．ＳｅＯ３（２－）和ＳｅＯ４（２－）的检测限分别为４０μｇ／Ｌ和５０μｇ／Ｌ．     

甲醛法在测定固定污染源排放SO2浓度中的应用

对用注射器采样甲醛法测定高浓度ＳＯ２样气精密度、准确度，采样效率，样品的稳定性进行了研究，并应用于燃煤，燃油锅炉排气中ＳＯ２浓度的测定，同时与碘量法结果进行比较和评价，表明注射器采样甲醛法测定了ＳＯ２基本可行。     

用甲醛法测定SO2的影响因素及质量保证措施

探讨了甲醛法测定ＳＯ_２浓度时ＰＲＡ浓度和实验温度对ＳＯ_２曲线斜率的影响。根据实验结果，提出测定ＳＯ_２方法１的实验室质量保证措施，得出不同显色温度的显色时间；ＲＳＤ小于４％，系统误差小、精密度好、准确度高。     

浙江省环保重点城市CO2排放的控制模式

通过分析城市ＳＯ２地面浓度来源，运用高、中、低架源对地面污染物浓度贡献的理论及高斯烟羽模式推出ＳＯ２空气质量管理模式，确定了城市ＳＯ２地面环境质量的控制目标。     

武汉市城区大气监测优化布点研究

对武汉市城区网格布点实测ＴＳＰ、ＳＯ２获取了城区大气污染总体水平的数据，运用Ｆｉｓｈｅｒ最优分割方法，求出城区５个优化测点数，运用模糊聚类方法对武汉城区４８个网格测点的ＴＳＰ、ＳＯ２污染强度置信水平进行聚类；运用日均值和百分位数逼近方法检验；结合优化布点原则等，最终确定的ＴＳＰ、ＳＯ２的５个优化测点能集中反映城区大气环境中ＴＳＰ、ＳＯ２的总体污染水平。     

唐山市大气中硫酸盐化速率与SO2相关性分析

通过对唐山市１９９２－１９９４年大气硫酸盐化速率与ＳＯ２的监测数据进行分析，结果表明，两者之间显著的正相关关系，利用１０８对数据建立了线性回归分析方程，ｒ值大于０．６。     

乌鲁木齐市大气硫酸盐化速率与二氧化硫浓度的相关性

对全市１９８９年至１９９１年中大气硫酸盐化速率与二氧化硫的监测数据进行了相关性研究，结果表明：除七道湾化工厂外，两项目间存在着非常显著的正相关关系．对建成区７个测点三年中８３对监测数据进行了一无线性回归分析，建立了合理可行的回归方程式     

石家庄市大气颗粒物中水溶性无机离子污染特征研究

用超声萃取－离子色谱法分析了石家庄市大气颗粒物中8种水溶性无机离子。结果表明，NO3－、SO2－4、NH4＋及 Ca2＋为主要组分；各个离子的质量浓度均有季节及空间变化差异；不同粒径颗粒物中 SO2－4和 NO3－相关性均很好，NH4＋与 SO2－4、NO3－在细颗粒物中具有良好的相关性，Ca2＋在粗粒子中与 NO3－和 SO2－4的相关性也较好。SO2－4／NO3－质量比季节变化表明，春、夏季固定源与流动源对大气颗粒物贡献相当，秋季流动源贡献较大，冬季固定源贡献较大。PM2．5中SO2与SO2－4、NO2与 NO3－转化率表明，SO2－4、NO3－主要是由二次转化而来。     

Peak exposures in aluminium potrooms: instrument development and field calibration

Aluminium smelter potrooms are unique in that workplace exposures to hydrogen fluoride (HF), sulfur dioxide (SO2), and particulate matter occur simultaneously for some tasks. The peak exposures to these contaminants are of increasing interest in discovering the etiology of respiratory health effects. While a variety of direct-reading instruments are available for sulfur dioxide and particulate matter, only a few exist for hydrogen fluoride. The sensors in these HF instruments have a cross-sensitivity to sulfur dioxide making it difficult to monitor HF in an environment that also contains SO2. To overcome this problem, we assessed the simultaneous use of two electrochemical instruments: one with a SO2 sensor that does not respond to HF and the second with a hydrogen fluoride sensor that responds to both HF and SO2 in a 1 : 1 ratio, termed 'total acid gas'. The difference in the response between the two instruments should indicate the HF concentration: [HF + SO2] minus SO2 equals HF. The performance characteristics of this sampling train were evaluated in the laboratory through the generation of both HF and SO2 with permeation tubes. The response and recovery times for the SO2 only instrument were acceptable (6 and 15 s, respectively), but the "total acid gas" instrument exhibited both slow response and slow recovery approaching three and six min. The association between the traditional integrated filter sampling method and the direct-reading instrument for SO2 is 0.80 (Spearman's rho). The use of the digital filter strengthens the association between the HF direct-reading instrument and the integrated samples from 0.41 to 0.68.     

CO对定电位电解法测定SO2的影响及对策探讨

采用定电位电解法测定固定污染源废气中SO2,根据CO标准气体干扰SO2 测定的规律建立数学模型,并在实验室用CO标气对数学模型进行验证.用该数学模型对5家企业固定污染源废气中SO2 监测,将测定结果与碘量法的测定结果比对,绝对误差与相对误差在允许范围内.     

建德市大气SO2浓度与气象条件关系初探

利用实测资料分析了建德市大气ＳＯ２与风向、风速、气温、湿度、降水量、逆温气象因子间的关系，认为，冬季污染源下风向混合区ＳＯ２浓度出现最高值，在静风和微风情况下，城市污染水平基本上可代表城市的总体污染水平。     

Long-term relationships between SO2 and NOx emissions and SO4(2-) and NO3- concentration in bulk deposition at the Hubbard Brook Experimental Forest, NH

A highly significant second-order polynomial relation between SO(2) emissions and SO(4)(2-) concentrations during 1970-2000 (r(2)= 0.80, p= <0.001), and a linear relation between NO(x) and NO(3)(-) concentrations during 1991-2000 (r(2)= 0.67, p= 0.004) in bulk precipitation were found for the Hubbard Brook Experimental Forest, NH based on emissions from a 24 h, back-trajectory determined source area. Earlier periods (1965-1980) for SO(2)ratio SO(4)(2-) and longer periods (1965-2000) for NO(x)ratio NO(3)(-) had poorer linear relations, r(2)= 0.03, p= 0.51 and r(2)= 0.22, p= 0.004, respectively. Methodology by the US Environmental Protection Agency for calculating emissions data during this period has changed significantly and frequently, making trend analysis difficult. Given the large potential for errors in estimating emissions and to a lesser extent, deposition, the robust relations between SO(2) emissions and SO(4)(2-) concentrations in bulk precipitation at the Hubbard Brook Experimental Forest show that careful, long-term measurements from a single monitoring site can provide sound and reasonable data on trends in air pollution.     

浙江省环保重点城市SO 2 排放的控制模式

通过分析城市SO2 地面浓度来源 ,运用高、中、低架源对地面污染物浓度贡献的理论及高斯烟羽模式推出SO2空气质量管理模式 ,确定了城市SO2 地面环境质量的控制目标。     

Feasibility study of preparation and certification of reference materials for nitrogen dioxide and sulfur dioxide in diffusive samplers

This paper presents the results of a feasability study for the preparation and certification of reference materials (RMs) for nitrogen dioxide (NO(2)) and sulfur dioxide (SO(2)) in diffusive samplers. RMs for NO(2) were prepared by exposure to gas mixtures in a chamber while the RMs for SO(2) were prepared by liquid spiking. Certification of RMs for NO(2) was found feasible with a certified uncertainty of 5.8% and a proposed shelf life of 5 years. The uncertainty was calculated with contribution from the homogeneity of preparation, stability and transport of the CRMs and from an external verification of the certified value. To reach 5.8% of uncertainty, the contribution of the differences between the results of analysis by ion chromatography and colorimetry must be eliminated. It is proposed to solve this by pre-extracting the samplers with water before analysis. The results of this study indicate that the samplers are stable for at least two years before and after exposure when stored in a refrigerator. By contrast, the certification of RMs for SO(2) was found to not be feasible due to instability problems. This instability was attributed to reaction of sulfate on the walls of the samplers. Alternatively, the preparation of RMs by simultaneous exposure to SO(2) and NO(2) has been tested. Satisfying homogeneities has been reached both for NO(2) and SO(2).