A micrometer-sized europium(iii)–organic framework for selective sensing of the Cr2O72− anion and picric acid in water systems

2017 ◽  
Vol 46 (39) ◽  
pp. 13502-13509 ◽  
Author(s):  
Hongming He ◽  
Si-Hang Chen ◽  
De-Yu Zhang ◽  
Rui Hao ◽  
Chao Zhang ◽  
...  

A micrometer-sized europium(iii)–organic framework with good dispersibility, excellent thermal and environmental stability, and easy regeneration ability can serve as a dual-responsive luminescent sensor to probe both Cr2O72− and picric acid contaminants in water system.

2013 ◽  
Vol 42 (34) ◽  
pp. 12403 ◽  
Author(s):  
Xin-Hui Zhou ◽  
Liang Li ◽  
Hong-Hui Li ◽  
Ao Li ◽  
Tao Yang ◽  
...  

2017 ◽  
Vol 53 (77) ◽  
pp. 10668-10671 ◽  
Author(s):  
Di-Ming Chen ◽  
Jia-Yue Tian ◽  
Zhuo-Wei Wang ◽  
Chun-Sen Liu ◽  
Min Chen ◽  
...  

A unique nanoporous Na(i)-MOF with excellent dye separation performance is presented and the dye@MOF composite could be applied as a luminescent sensor for picric acid detection.


2016 ◽  
Vol 22 (52) ◽  
pp. 18634-18634 ◽  
Author(s):  
Wei Liu ◽  
Xin Huang ◽  
Cong Xu ◽  
Chunyang Chen ◽  
Lizi Yang ◽  
...  

2016 ◽  
Vol 22 (52) ◽  
pp. 18769-18776 ◽  
Author(s):  
Wei Liu ◽  
Xin Huang ◽  
Cong Xu ◽  
Chunyang Chen ◽  
Lizi Yang ◽  
...  

2013 ◽  
Vol 14 (4) ◽  
pp. 393-398

The occurrence of trihalomethanes (THMs) was studied in the drinking water samples from urban water supply network of Karachi city that served more than 18 million people. Drinking water samples were collected from 58 locations in summer (May-August) and winter (November-February) seasons. The major constituent of THMs detected was chloroform in winter (92.34%) and summer (93.07%), while the other THMs determined at lower concentrations. Summer and winter concentrations of total THMs at places exceed the levels regulated by UEPA (80 μg l-1) and WHO (100 μg l-1). GIS linked temporal variability in two seasons showed significantly higher median concentration (2.5%-23.06%) of THMs compared to winter.


1993 ◽  
Vol 27 (5-6) ◽  
pp. 61-67 ◽  
Author(s):  
E. Jacobs ◽  
J. W. van Sluis

The surface water system of Amsterdam is very complicated. Of two characteristic types of water systems the influences on water and sediment quality are investigated. The importance of the sewer output to the total loads is different for both water systems. In a polder the load from the sewers is much more important than in the canal basin. Measures to reduce the emission from the sewers are much more effective in a polder. The effect of these measures on sediment quality is more than the effect on water quality. Some differences between a combined sewer system and a separate sewer system can be found in sediment quality.


1999 ◽  
Vol 39 (4) ◽  
pp. 221-231
Author(s):  
A. H. Lobbrecht

The properties of main water ways and infrastructure of rural water systems are often determined by very general design methods. These methods are based on standards that use only little information of the actual water system. Most design methods applied in the Netherlands are based on land use and soil texture. Standards have been developed on the basis of generalized properties of water systems. Details of the actual layout of the water system and the way in which that system is controlled, are usually not incorporated. Present-day dynamic simulation programs and the computer power currently available enable more detailed modeling and incorporation of location-specific data into models. Such models can be used to design the water system and can include real data. A model-based design method is introduced, in which the actual situation of the water system is taken into consideration as well as the way in which the water system is controlled. Stochastics concerning the operation and availability of controlling infrastructure are included in the method. Models can be evaluated by including real data. In this way the actual safety of the water system, for example during floods, can be determined. Water-quantity design criteria can be incorporated as well as water-quality criteria. Application of the method makes it possible to design safe water systems in which excess capacities are avoided and in which all requirements of interest are met. The method, called the ‘dynamic design procedure’, can result in considerable savings for water authorities when new systems have to be designed or existing designs have to be reconsidered.


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