全文获取类型
收费全文 | 65篇 |
免费 | 3篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 2篇 |
环保管理 | 11篇 |
综合类 | 30篇 |
基础理论 | 6篇 |
污染及防治 | 2篇 |
评价与监测 | 18篇 |
出版年
2018年 | 1篇 |
2017年 | 1篇 |
2016年 | 2篇 |
2014年 | 7篇 |
2013年 | 6篇 |
2012年 | 5篇 |
2011年 | 3篇 |
2010年 | 2篇 |
2009年 | 2篇 |
2008年 | 3篇 |
2007年 | 1篇 |
2006年 | 7篇 |
2005年 | 2篇 |
2004年 | 4篇 |
2003年 | 4篇 |
2002年 | 4篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1995年 | 6篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1989年 | 1篇 |
排序方式: 共有71条查询结果,搜索用时 15 毫秒
41.
42.
微波消解ICP-AES法测定城市污水中11种元素 总被引:4,自引:1,他引:3
介绍了微波消解电感耦合等离子体发射光谱法测定城市污水中Cu、Zn、Pb、Cd、Cr、Na、Mn、Fe、Ni、Se、Sb等11种元素的方法。在最佳试验条件下,被测元素的检出限为0.004μg/mL~0.12μg/mL,相对标准偏差为1.9%~11%,回收率为93.1%~104%。 相似文献
43.
茶叶中的微量砷及其在茶汤中形态的分析 总被引:3,自引:0,他引:3
采用电感耦合等离子体发射光谱(ICP-AES)对茶叶中微量砷进行了测定,并结合离子交换和溶剂萃取技术对茶汤中的砷的形态化合物进行了分离和测定。 相似文献
44.
Polymer coating of copper oxide nanoparticles increases nanoparticles uptake and toxicity in the green alga Chlamydomonas reinhardtii 总被引:1,自引:0,他引:1
Copper oxide nanoparticles (CuO NPs) are frequently used in a polymer-coated form, to be included in paints or fabrics for antimicrobial properties. Their application in antifouling paints may lead to the contamination of aquatic ecosystems. However, the toxicological risk of NPs in the environment is hard to evaluate due to a lack of knowledge on the mechanisms of NP interaction with biological systems. In this study, we investigated the effect of polymer coating on CuO NP toxicity in the green alga Chlamydomonas reinhardtii by comparing bare and polymer-coated CuO NPs prepared from the same CuO nanopowder. Both CuO NP suspensions were toxic to C. reinhardtii after 6 h treatment to concentrations of 0.005-0.04 g L−1. Bare and polymer-coated CuO NPs induced a decrease of Photosystem II activity and the formation of reactive oxygen species. Polymer-coated CuO NP was found to be more toxic than the uncoated CuO NP. The higher toxicity of CS-CuO NP was mainly associated with the increased capacity of polymer-coated CuO NP to penetrate the cell compared to bare CuO NPs. These results indicates that the high toxicity of polymer-coated CuO NPs in algal cells results of intracellular interactions between NPs and the cellular system. 相似文献
45.
Jiuyan Su Ji Zhang Jieqing Li Tao Li 《Journal of environmental science and health. Part. B》2018,53(7):454-463
This study aimed to determine the contents of main mineral elements of wild Boletus edulis and to assess its edible safety, which may provide scientific evidence for the utilization of this species. Fourteen mineral contents (Ba, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Na, Ni, Sr, V and Zn) in the caps and stipes of B. edulis as well as the corresponding surface soils collected from nine different geographic regions in Yunnan Province, southwest China were determined. The analyses were performed using inductively coupled plasma atomic emission spectrometer (ICP-AES) after microwave digestion. Measurement data were analyzed using variance and Pearson correlation analysis. Edible safety was evaluated according to the provisionally tolerable weekly intake (PTWI) of heavy metals recommended by United Nations Food and Agriculture Organization and World Health Organization (FAO/WHO). Mineral contents were significantly different with the variance of collection areas. B. edulis showed relative abundant contents of Ca, Fe, Mg and Na, followed by Ba, Cr, Cu, Mn and Zn, and the elements with the lower content less were Cd, Co, Ni, Sr and V. The elements accumulation differed significantly in caps and stipes. Among them, Cd and Zn were bioconcentrated (BCF > 1) while others were bioexcluded (BCF < 1). The mineral contents in B. edulis and its surface soil were positively related, indicating that the elements accumulation level was related to soil background. In addition, from the perspective of food safety, if an adult (60 kg) eats 300 g fresh B. edulis per week, the intake of Cd in most of tested mushrooms were lower than PTWI value whereas the Cd intakes in some other samples were higher than this standard. The results indicated that the main mineral contents in B. edulis were significantly different with respect to geographical distribution, and the Cd intake in a few of regions was higher than the acceptable intakes with a potential risk. 相似文献
46.
密闭微波消解 ICP- AES 法测定大气颗粒物中金属元素 总被引:3,自引:1,他引:2
采用过氯乙烯滤膜采集、密闭微波消解、电感耦合等离子发射光谱法测定大气颗粒物中铅、镍、铬、铜、铁、锌、锰、钡、镉,优化了试验条件.方法线性良好,各元素的检出限在0.001 mg/L~0.01 mg/L之间,滤膜样品测定的RSD为0.6%~2.9%,加标回收率为96.0%~105%. 相似文献
47.
Wastewater pollution in industrial areas is one of the most important environmental problems. Heavy metal pollution, especially
chromium pollution in wastewater sources from dyeing and tannery has affected the life on earth. This pollution can affect
all ecosystems and human health directly or by food chain. Therefore, the determination of chromium in this study is of great
importance. Dil Creek is located in the eastern Marmara region and discharges into the Izmit Gulf. This water source is used
for irrigation in agriculture and as drinking water for animals. In this study, a rapid, sensitive and selective method for
the speciative direct determination of Cr (III) and Cr (VI) in dyeing waste water samples collected from the nearest station
to Izmit Gulf of Dil Creek in May 2006 by inductively coupled plasma-atomic emission spectrometry (ICP-AES) has been developed.
An analysis of a given sample is completed in about 15 min for ICP-AES the method. As the result of the chromium analysis,
the limit of quantification (LOQ) for the Cr (III), Cr (VI) and total Cr were founded as 0.0111 ± 0.0002 mg/l (RSD, 1.80%),
0.0592 ± 0.0010 mg/l (RSD, 1.70%) and 0.0703 ± 0.0020 mg/l (RSD, 2.84%) respectively. In addition, the general mathematical
formula has been developed to calculate the concentration of Cr(III), which can be applied to any other metal species. The
result of Cr (VI) analysis indicated that water quality of Creek was IV. class quality according to the inland water classification.
In order to validate the applied method, recovery studies were performed. 相似文献
48.
Stephen M. Haley Alan D. Tappin Peter R. Bond Mark F. Fitzsimons 《Environmental Chemistry Letters》2006,4(4):235-238
Suspended particulate matter (SPM) is a key component regulating the biogeochemistry of natural and contaminant moieties in estuaries. Individual particle analyses can complement conventional bulk analyses of SPM, but are rarely undertaken. This study used scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDS) of particles to quantify a range of elements in the reference estuarine sediment PACS-2. This approach was compared with a bulk SPM analysis based on inductively coupled plasma-atomic emission spectrometry (ICP-AES). The median concentrations of Al, Fe, Mg, and Ca for the two approaches were similar, and accuracy for both methods was good. SEM-EDS analysis was also satisfactory for K. Agreement was poorer for Mn and Ti, which were present at trace concentrations. Increasing the number of particles examined by SEM-EDS should improve the analysis. SEM-EDS analysis of SPM from the Tamar Estuary, UK, revealed marked geochemical differences between particle sub-populations.Selected article from 6th European Meeting on Environmental Chemistry, Belgrade, 2005, organised by Prof. Dr. Branimir Jovancicevic and the European Association of Chemistry and the Environment (ACE, www.research.plymouth.ac.uk/ace) 相似文献
49.
本法研究了在饮用水使用端视ICP-AES直接测定水中的钙、镁、锂、锶、钡、铝、铁、锰、铜、锌、镉、铅、银元素。该方法操作简单,结果准确,具有良好的精密度和回收率。 相似文献
50.
本文按照反应类型综述了原子光谱法间接测定水中非金属和阴离子,特别对饮用水和人发中砷及水和废水中Cl^-1的分析方法进行了讨论,指出了间接法的发展方向。 相似文献