16 Questions 48 Answers 0 Followers
Questions related from Ezhilkumar Marimuthu Rajendran
Usually the filter papers will be desiccated for 24 hr before and after ambient air pollutant sampling. As we encounter some error in weighing balance, we are unable to weigh the exposed air...
23 October 2018 1,966 4 View
I have analysed my air samples filter papers in SEM/EDX. The compostion of elemets reported were in weight % and atmoic %. But how do i convert those weight% reports to concentration values with...
15 May 2018 2,735 8 View
Air sampled filter papers were analysed for chemical compostion using AAS. The results were in mg/kg. How do i convert mg/kg to ug/m3?
15 May 2018 8,978 11 View
As per the standards, Fine dust air samplers are designed with a flow rate of 16.67 lpm for collection of PM2.5 and PM 10. What is the significance in this flow rate. Normal human being...
11 February 2018 8,770 4 View
I am doing source apportionment study for PM2.5 and PM10 pollutants. TO do that, I use EPA PMF 5.0 model. There uncertainty data is to feed as one of the input. Can any body help me how to...
25 May 2017 1,353 18 View
I need vertical wind speed to study the movement of air pollutants. Is there any theoretical methods to estimate vertical wind speed and not vertical wind profile using power law and any other...
27 April 2017 6,767 16 View
Im performing a videographic survey in an expressway to estimate the emission of line source. But to determine emission load of a vehicle, I need a data on vintage of that vehicle. Any possible...
29 March 2017 4,870 4 View
I use CFD to simulate gas dispersion. In this, through results I get the density contour of NOx. How do I convert the density values to concentration? Is ideal gas law suitable, if so give me the...
10 March 2017 1,527 5 View
I have two similar filter papers say PTFE type of different brands. How do I validate to prove either of the filter papers are in standards to use for the research work in sampling PM 2.5 air...
05 February 2017 1,029 10 View
When atmosphere is considered, we speak about turbulence and stability to define the dilution of pollutants. So far my understanding in turbulence is non continuous stable movement and that is...
25 August 2016 5,936 4 View
what is the significance of using PTFE filter paper than glass fiber and quartz?
13 March 2016 9,669 3 View
There are several methods for calculating Mixing Height but requires upper air data. Is there any source for finding mixing height using surface met. data. Kindly help me to find them.
01 January 1970 5,688 3 View
What is the average weight of Indian vehicles i.e. Motor cycle, Car, auto rickshaw, etc.,. Where can I access this data? Is ARAI providing this data?
01 January 1970 1,468 6 View
I find filter papers with various grades in glass fibre material like GF/A, GF/B, GF/C in whatman make. What does this grading signifies?
01 January 1970 6,292 2 View
As per the Indian and other standards, PM pollutants permissible limits are defined for 24hr and Annually. If the samples are collected for 12hr basis, can we use them for analysis and also will...
01 January 1970 10,081 5 View
Source: EPA PMF User guide A graph for PM2.5 data was shown in practice exercise. Actually higher the conc. in total species will contribute higher %. How actually is the below condition...
01 January 1970 1,822 2 View
