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基于多元回归理论的太湖湖泛预警模型研究   总被引:1,自引:0,他引:1       下载免费PDF全文
Feculent and anaerobic water aggregation (FAWA) is a type of specific environmental disaster with characteristics of occurring abruptly,lasting in short duration,and causing serious consequences on the environment and ecosystems.Experiments choosing algal density as the investigated object were carried out to analyze the parameters using data analysis software SPSS,including the water quality,temperature,and algal density,in four monitoring sites of the Yixing part where FAWA happened historically.An early warning model using the multiple regression theory was constructed based on the algal cell density together with weather conditions and related algal density threshold when FAWA happened in the past years.Based on the current weather data and real time water quality parameters in the monitoring site,the model could be used to evaluate the risk grade of FAWA occurring in the monitoring region.  相似文献
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建立了固相萃取-液质联用分析药物和个人护理品( PPCPs)的方法,采用Oasis HLB固相萃取柱分别在酸性条件下和碱性条件下对PPCPs进行富集提取,该法对于宜兴地区能够检出的30种PPCPs均具有良好的线性,相关系数为0.990~0.999,检出限为1.37~10.12 ng/L。应用该法对宜兴地区地表水中存在的PPCPs进行分析,结果显示30种PPCPs均有不同程度检出,分布最广泛的7种分别为避蚊胺、阿替洛尔、对乙酰氨基酚、普鲁卡因、β-雌二醇、卡马西平和苯佐卡因,阿替洛尔浓度较高,普遍为5~600 ng/L。避蚊胺虽然出现频率最高,但其在各个采样点浓度偏低,普遍为1~50 ng/L。  相似文献
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