全文获取类型
收费全文 | 216篇 |
免费 | 105篇 |
国内免费 | 15篇 |
专业分类
安全科学 | 3篇 |
废物处理 | 4篇 |
环保管理 | 25篇 |
综合类 | 104篇 |
基础理论 | 86篇 |
污染及防治 | 87篇 |
评价与监测 | 24篇 |
社会与环境 | 3篇 |
出版年
2025年 | 8篇 |
2024年 | 22篇 |
2023年 | 21篇 |
2022年 | 12篇 |
2021年 | 13篇 |
2020年 | 7篇 |
2019年 | 7篇 |
2018年 | 13篇 |
2017年 | 6篇 |
2016年 | 11篇 |
2015年 | 9篇 |
2014年 | 9篇 |
2013年 | 29篇 |
2012年 | 17篇 |
2011年 | 20篇 |
2010年 | 6篇 |
2009年 | 16篇 |
2008年 | 12篇 |
2007年 | 6篇 |
2006年 | 20篇 |
2005年 | 7篇 |
2004年 | 4篇 |
2003年 | 10篇 |
2002年 | 11篇 |
2001年 | 9篇 |
2000年 | 10篇 |
1999年 | 2篇 |
1998年 | 5篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1987年 | 1篇 |
1982年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
排序方式: 共有336条查询结果,搜索用时 0 毫秒
1.
渠烨 《辽宁城乡环境科技》2013,(5):41-43
综述了水生植物对氮、磷、重金属及有毒有机物等各类污染物的清除作用及其在污染治理中的应用实践,同时对水生植物在废水处理和湖泊治理方面的应用提出了相应的建议。 相似文献
2.
3.
长江南京段水、悬浮物及沉积物中多氯有毒有机污染物 总被引:57,自引:1,他引:57
对长江南京段水、悬浮物及沉积物中多氯有毒有机污染物进行了分析测定,由色谱/质谱测得的结果表明,水和沉积物中多氯有机污染物的浓度较低,低于欧洲主要河流中的含量水平.悬浮物中这类污染物总含量较高,为56.45~62.35μg/kg,而水中总含量仅为14.61~15.83ng/L.由于长江中污染物被充分稀释与混匀,各采样点的水和悬浮物中该类污染物的浓度变化不大,两相间具有较好的相关性.但各采样点的沉积物中多氯有机污染物含量差异甚大,表明悬浮物的沉积极不均一.沉积物中主要污染物是六氯苯(HCB)和它的代谢产物五氯苯(PeCB)以及滴滴涕(DDT)的代谢产物,其他多氯有机污染物含量很低. 相似文献
4.
有机污染物在被动采样材料与环境介质之间的平衡分配系数(KP),是测定环境中有机污染物浓度的重要参数,但KP值大部分都需要经过繁琐的实验测定获取,无法逐个测定数量繁多的污染物,因此需开发一种预测KP值的方法。为此,搜集整理了一些多环芳香烃(PAHs)和多氯联苯(PCBs)的低密度聚乙烯(LDPE)-空气分配系数(KPA)的实测值,基于理论线性溶解能(TLSER)和定量结构性质关系(QSPR),利用逐步多元线性回归(MLR)分别构建了预测KPA值的模型。模型的决定系数Radj2分别为0.927和0.956,交叉验证系数QLOO2分别为0.915和0.946,外部系数Qext2分别为0.913和0.960。结果表明,2种模型具有良好的拟合优度、稳健性和预测能力,并解释了模型的机理。所构建的2种模型均可用来预测应用域内有机污染物的LDPE膜-空气分配系数。 相似文献
5.
近年来,我国大气环境、水环境和土壤环境质量得到一定的改善,“碧水蓝天”已经成为常态.但随着持久性有机污染物、内分泌干扰物、抗生素和微塑料等新污染物在环境中不断被检出,新污染物正逐步受到广泛的关注,壬基酚作为一种典型的内分泌干扰物也备受研究人员的关注.系统地概括了我国水体中壬基酚的环境行为和暴露水平,并基于风险商法和联合概率曲线法对壬基酚可能造成的生态风险进行了评估.结果表明,壬基酚对水生生物的毒性效应主要包括急性毒性、生长发育毒性、雌激素效应和繁殖毒性;壬基酚在我国主要流域水体中普遍存在,其浓度平均值在60~1 000 ng·L-1,浓度最高值可达4 628 ng·L-1;基于风险商法和联合概率曲线法的风险评估结果表明,壬基酚对我国主要流域里的水生生物均存在一定的风险.最后,总结了目前比较常用的壬基酚处理处置和风险管控技术,比较了国际上内分泌干扰物的监管方法,针对我国在新污染物环境管理中存在的问题,提出了针对性政策建议,研究结果可以为我国新污染物管理和管控提供参考. 相似文献
6.
本研究详细分析了天津市5条主要入海河流中新污染物的分布特征及其生态风险。采集2023年丰水期和2024年枯水期的样品,运用高效液相色谱−质谱联用技术对该区域15种典型新污染物进行了定量分析。研究表明,新污染物的浓度和生态风险系数(risk quotient,
7.
8.
Han Qu Hongting Diao Jiajun Han Bin Wang Gang Yu 《Frontiers of Environmental Science & Engineering》2023,17(1):12
Over the past decades, the plastic production has been dramatically increased. Indeed, a category of small plastic particles mainly with the shapes of fragments, fibers, or spheres, called microplastics (particles smaller than 5 mm) and nanoplastics (particles smaller than 1 μm) have attracted particular attention. Because of its wide distribution in the environment and potential adverse effects to animal and human, microplastic pollution has been reported as a serious environment problem receiving increased attention in recent years. As one of the commonly detected emerging contaminants in the environment, recent evidence indicates that the concentration of microplastics show an increasing trend, for the reason that up to 12.7 million metric tons of plastic litter is released into aquatic environment from land-based sources each year. Furthermore, microplastic exposure levels of model organisms in laboratory studies are usually several orders of magnitude higher than those found in environment, and the microplastics exposure conditions are also different with those observed in the environment. Additionally, the detection of microplastics in feces indicates that they can be excreted out of the bodies of animal and human. Hence, great uncertainties might exist in microplastics exposure and health risk assessment based on current studies, which might be exaggerated. Policies reduce microplastic emission sources and hence minimize their environmental risks are determined. To promote the above policies, we must first overcome the technical obstacles of detecting microplastics in various samples. 相似文献
9.
Balancing recreation and conservation is an important issue in Canada's parks and protected areas. Increased levels of visitation to parks, especially to backcountry areas, create undue pressure on natural resources, resulting in a variety of ecological impacts. This paper illustrates the issue of visitor-induced changes on the chemical composition of soils in Mt Robson Provincial Park, British Columbia. Soil samples were collected from dish wash stations and fire pits (disturbed sites) at seven campgrounds located along two popular backcountry trails, and were compared to samples obtained from adjacent undisturbed control sites. Analysis of soil samples suggest that the lower amounts of aluminum, potassium, magnesium and sodium in many of the 'disturbed' samples can be related to intense leaching in dish wash stations, and can be attributed to frequent disposal of waste water from washing and cooking activities. Soils in wash stations generally had higher phosphorus, copper and zinc contents as compared to controls. Soils in fire pits were elevated in copper, relative to controls. Results of this study support park regulations that waste water disposal and camp fires be restricted to designated areas. Informing the public of scientific studies helps them understand the consequences of their activities; this may help persuade them to observe park rules and regulations. 相似文献
10.