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91.
Turalioğlu FS 《Environmental monitoring and assessment》2005,104(1-3):119-130
Sulphur dioxide and PM10 levels are investigated in Erzurum during the periods of 1990–2000 heating season to assess air pollution level. For that reason, emissions of sulphur dioxide and particulate matter were calculated by using consumption of fuels and Turkish emission factors. These emission values were evaluated together with air pollution levels, which were measured at six stations in Erzurum atmosphere during 1990–2000 winter periods. Results reveal that in 1990–1994 heating period, there is an increasing trend in the emissions and air pollution levels over Erzurum, and the air quality limits were not met. The daily 24 h limit (short-term limit) was exceeded 127 days in 1992–1993 winter period. The reason for this increase was found to be the switching to use of low-quality fossil fuels instead of cleaner ones. Results also indicated that there was a considerable decrease in emissions of air pollutants and air pollution levels after 1995. This can be explained by the consumption of more high-quality fossil fuels. The correlation coefficient of SO2 with PM10 is obtained as r2 = 0.85, which is a high value supporting the idea that both pollutants are emitted from the same source. 相似文献
92.
Sánchez-Camazano M Lorenzo LF Sánchez-Martín MJ 《Environmental monitoring and assessment》2005,105(1-3):11-24
The inputs of atrazine and alachlor herbicides to surface and ground waters from irrigated areas dedicated to corn cultivation in the Castilla-León (C-L) region (Spain) as related to the application of both herbicides were studied. Enzyme-linked immunosorbent assays (ELISA) were used for monitoring the atrazine and alachlor concentrations in 98 water samples taken from these areas. Seventy-nine of the samples were of ground waters and 19 were of surface waters. The concentration ranges of the herbicides detected in the study period (October 1997–October 1998) were 0.04–25.3 g L–1 in the surface waters and 0.04–3.45 g L–1 in the ground waters for atrazine, and 0.06–31.9 g L–1 in the surface waters and 0.05–4.85 g L–1 in the ground waters in the case of alachlor. The highly significant correlation observed between the concentrations of both herbicides in the surface waters (r = 0.89, p < 0.001) pointed to a parallel transport of atrazine and alachlor to these waters. A study was made of the temporal evolution of the concentrations of both herbicides, and it was found a maximum recharge of atrazine in the ground waters for April 1998 and of alachlor in October 1997 and October 1998. The temporal evolution of the concentrations of both herbicides in surface waters was parallel. The highly significant correlations observed between atrazine concentrations determined by ELISA and by HPLC (r = 0.92, p < 0.001) and between alachlor concentrations also determined by both methods (r = 0.96, p < 0.001) confirmed the usefulness of ELISA for monitoring both herbicides in an elevated number of samples. Using HPLC, the presence in some waters of the alachlor ethanesulfonate (ESA) metabolite was found at a concentration range of 0.52–4.01 g L–1. However the interference of ESA in the determination of alachlor by ELISA was negligible. The inputs of atrazine and alachlor to waters found in this study, especially the inputs to ground waters, could pose a risk for human health considering that some waters, though sporadically, are even used for human consumption. 相似文献
93.
通过对新疆著名旅游城市吐鲁番的空气环境、水环境、声环境、景观生态环境等环境质量存在的问题进行分析,针对性地提出了相应的环保对策及建议,为吐鲁番市的环境保护工作提供参考。 相似文献
94.
A. Haurie J.J.E. Kübler A. Clappier H. van den Bergh 《Environmental Modeling and Assessment》2004,9(1):1-12
A method is proposed to build integrated models (also called Metamodels) aimed at quantifying the economic efficiency of air quality policies. This Metamodeling approach is based on the coupling of two complementary models, that operate at different scales in space and time, and which represent the economic and the physical and chemical processes, respectively. The joint consideration of the physico-chemical and techno-economic structure of the pollution control problems permits a comprehensive evaluation of air pollution abatement strategies. The motivating pollution control problems include urban-regional air quality management through efficient energy and traffic control policies. A pilot study, exploiting data collected in the Geneva canton (Switzerland), is used to demonstrate the potential of the approach. 相似文献
95.
几种土壤质量评价方法的比较 总被引:20,自引:0,他引:20
分别用T值分级法,综合指数法,模糊数学综合评判法,灰色聚类法,等斜率灰色聚类法,宽域灰色聚类法对湖南某地10个监测点的土壤质量现状进行评价,通过比较,认为宽域灰色聚类法较好。 相似文献
96.
灰色局势决策用于水环境质量的评价 总被引:3,自引:0,他引:3
按灰色系统理论的观点和方法,根据各污染因子对环境质量的不同影响,将灰色局势决策法应用于水环境质量综合评价,并与水质距离评价法,模糊综合评判法和灰色关联度分析法进行了比较,结果表明,利用灰色局势决策法进行环境质量评价,是一种有效的实用方法。 相似文献
97.
介绍了灰色关联度因子分析方法,以及此法在水污染因子分析中的应用.对于一般监测资料系列短而监测项目却较齐全的情况,应用本法是较适宜的. 相似文献
98.
王新兰 《辽宁城乡环境科技》2006,26(1):21-23
利用污染指数法及相关系数法对盘锦市境内的河、海水质进行对比分析,从而得出近岸海域海湾水质主要受入海河流水质影响的结论。 相似文献
99.
100.