湿地植被对污水净化效果分析研究

人工湿地植被种植对污水净化具有显著性的改善作用,分析人工湿地植被种植与污水净化的量化关系,分析人工湿地植被种植对污水改善的原理,建立生态植被污水净化处理模式,采用多元回归分析方法人工湿地植被对水质控制和小型富营养水体生态恢复的效益因素,以营养物的去除率、重金属的去除率以及有机物去除率为指标,分析人工湿地植被种植对污水净化的生态学改善模型。研究表明,人工湿地植被种植能增加水体透明度,降低水体中的富营养物和重金属等物质,对污水具有显著性的改善作用。     

A view from the countryside

Guest Editorial

A view from the countryside     

A study on the interactions among several plant secondary compounds and aphids

The research, focused on the specific interactions among seven plant secondary compounds and aphids, was carried out and the preliminary results showed: (1) "T-typed tube method" was regarded as the best method compared with others designed to observe the interactions. (2) Cabbage aphid was able to be attracted by laurolene while it was not susceptible to α-pinene, β-pinene and diamylene. (3) Gossypol, a major secondary substance in cotton, was able to be implicated as feeding attractant to cotton aphid. (4) Rutin might be implicated repellent to cotton aphid.     

污染物在地下水毛细饱水带的运移规律浅释

分析了毛细饱水带的水动力学特性，指出在地下水污染研究中，污染物在毛细饱和水带和潜水怪具有相同的水平运动规律，并以实例分析说明该带对污染物运移的重要性。建议在研究和一非饱和条件地下水及污染物运动问题时把毛细饱水带与潜水含水层统一为饱马毛细饱水带顶面作为饱水面。     

青铜峡铝厂氟污染对广武乡玉米影响的调查分析

监测了青铜峡铝厂东南方向４．５ｋｍ的广武乡玉米叶，得知含氟量为４３．９４－１６６．１ｍｇ／ｋｇ，对照样品树新林场玉米叶的含氟均值为１３．１５ｍｇ／ｋｇ，广武乡的玉米受到了严重的氟污染，农作物减产严重。     

小清河水体和沿岸地下水中有机污染物的监测及其毒性分析

本文对小清河水体和沿岸地下水中的有机污染物进行了色－质联用分析，共检出有机污染物１３类９３种。并对其毒性效应进行了分析和评价。     

Determination of PAHs by On-Line Polarization Synchronous Fluorescence with HPLC

A novel analytical method has been established for on-line simultaneous determination of fluorene and acenaphthene,chrysene and benzo[a]anthracene (B[a]A) by polarization synchronous fluoromet.y (PSF) coupled to high performance liquid chromatography (HPLC). The detection limits were: 0.039, 0.046, 0.016 and 0.042 mgL-1 for fluorene, acenaphthene, chrysene and B[a]A, respectively. The proposed method has been successfisily applied to simultaneous determination of these PAHs in environmental air and marine sediment samples.     

连续采样与五日法采样效果及费用的对比分析

通过对连续采样与五日法采样五种方法监测结果及所需费用的比较，得出连续采样方法监测结果更具有代表性，合理性，一次性投资大，但运行费用并不高的结论。     

气相色谱／石墨炉（Ⅲ型）原子吸收光谱联用及汽油中铅化学形态分析的研究

本文研究了气相色谱／石墨炉（Ⅲ型）原子吸收光谱联用的工作条件对测定（Ｃ２Ｈ４）４Ｐｂ的影响，选择了分析条件并建立了其分析方法。该方法的最小检测量为８．６×１０－１１ｇ，回收率为１００．８～１１１．４％。已用于汽油中铅化学形态的分析，取得了满意的结果。     

Faculty position announcement

Faculty position announcement