Researchers develop environmental monitoring device

1999 ◽  
Vol 36 (6) ◽  
pp. 15
2011 ◽  
Vol 15 ◽  
pp. 2469-2473
Author(s):  
Rui Jiang ◽  
Yaqi Xu ◽  
Zhen Huang ◽  
Zheng Ma

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 730
Author(s):  
Noam David ◽  
Yanyan Liu ◽  
Kingsley K. Kumah ◽  
Joost C. B. Hoedjes ◽  
Bob Z. Su ◽  
...  

Over the last two decades, prevalent technologies and Internet of Things (IoT) systems have been found to have potential for carrying out environmental monitoring. The data generated from these infrastructures are readily available and have the potential to provide massive spatial coverage. The costs involved in using these data are minimal since the records are already generated for the original uses of these systems. Commercial microwave links, which provide the underlying framework for data transfer between cellular network base stations, are one example of such a system and have been found useful for monitoring rainfall. Wireless infrastructure of this kind is deployed widely by communication providers across Africa and can thus be used as a rainfall monitoring device to complement the sparse proprietary resources that currently exist or to substitute for them where alternatives do not exist. Here we focus this approach’s potential to acquire valuable information required for agricultural needs across Africa using Kenya as an example.


1974 ◽  
Vol 18 ◽  
pp. 568-578
Author(s):  
Jerry A. Lorenzen

AbstractA prototype Environmental Monitoring Device (EMD) has been developed as a simple means for inexpensive, routine determination of site severities. The EMD is a cartridge that can be connected to an inexpensive pumping unit to collect an atmospheric sample. The field procedures are extremely simple and have been done routinely by individuals with no chemical training. Four filters within the cartridge selectively react with and permanently trap pollutants from the air drawn through the cartridge. The first filter collects particulates. The second is o-tolidine impregnated Whatman #41 filter paper to collect gaseous chlorine species. Silver nitrate impregnated paper collects reactive sulfur gases, and the fourth filter paper is impregnated with sodium hydroxide to react with and collect sulfur dioxide. After atmospheric sampling, the cartridges are returned via mail to a central analytical lab. Procedures have been developed for easy and rapid determination of the quantities of pollutants on the filters by energy dispersive X-ray fluorescence. Laboratory and field measurements from a number of locations within the IBM Corporation have been made and will be reported. The EMD approach is providing a large data base on indoor atmospheric pollutants that could affect electronic equipment. The approach could easily be extended to numerous other applications.


Sign in / Sign up

Export Citation Format

Share Document