18 Questions 6 Answers 0 Followers
Questions related from Soheila Rezaitabar
Dear All, Thank you for your time and assistance. I would like to inquire if you are aware of any established methods for assessing the health risks associated with using wastewater for irrigating...
last month 5,230 3 View
Could anyone recommend standardized protocols or peer-reviewed references detailing reliable extraction, separation, and quantification techniques for sulfur determination (refinery and mineral)...
02 March 2025 1,893 2 View
Dear Madam/Sir I need a new complete reference about the effect of air pollution on plants/agricultural plants. I would be very appreciate if you share the reference with me. Thank you for your...
10 February 2024 6,393 2 View
We had a comparison between the portable and stationary instruments related to particulate matter measuring. The difference was significant about pm2.5. Does anyone know what is the reason?
28 November 2023 1,646 2 View
What is the relation between the PM2.5 concentration and relative humidity?
05 January 2023 6,686 0 View
I need a comparison of the different steel production methods (blast furnace, electric arc furnace, basic oxygen furnace, and induction furnace) based on the air pollutants emission. On the other...
08 November 2022 2,534 1 View
I would be very appreciative if you introduce a valid guideline for water quality parameters for wildlife habitats.
08 August 2022 1,608 4 View
Hi Dear Madam/Sir I have wastewater with attached properties. I have to reduce the EC to less than 5,000 us/cm. I would be very grateful if you could offer me an economical method with high...
27 June 2022 9,957 4 View
Dear Madam/Sir We have a Pg AA with a graphite furnace. I can't see any signal or peak from Cadmium (Cd) standards while measuring with graphite furnace but with flame, the R square is almost...
13 January 2022 1,778 0 View
Hi everyone. As you know to calculate the normal concentration of flue particles in dry condition there is below formula: Cd =Cw ×(100/(100-F)) "F" is absolute humidity. When we sample flue using...
27 December 2021 1,619 2 View
I have a Pg AA 500 instrument. The absorbance of Cd and Pb by flame is excellent but i can't measure them by GF-AA. There is no peak in atomization stage. I have checked many heating programs. In...
12 April 2020 3,108 0 View
Dear Madam/Sirs I have a unknown sample to measure NO2-, PO4 3-, F and NH3. The color was not removed by carbon active and filtration. But when we add AlNO3 the sample color sediment. Do you...
16 January 2020 5,828 3 View
We have an AA PG 500 with many problems: 1. The acetylene-air flame is not stable and it turn off after some minutes. 2. The acetylene-nitrous oxide flame is not stable and it turn off after some...
20 October 2019 8,223 2 View
Hi every one. Some elements like Fe, Mn, Al, Sc, Ti, Ca could be used as reference element in calculating EF. Can I use Zn or Cu as reference element to calculate EF? Thanks for your time and help.
13 January 2019 2,168 0 View
Hi every one. I need a digestion method with hot plate for extraction of total heavy metals (HMs) from total suspended particulate matter (TSP). It needs to mention that, I studied EPA method...
29 October 2018 3,531 10 View
I use Spadans method. Because of sample turbidity and high TSS, even with filtration or dilution, i cant measure the F concentration. Does any one have any suggestion fort his problem? Thank u.
04 August 2018 8,371 6 View
Hi every one. I need a list of applications/soft wares which can calculate the biodiversity indices. I would be very appreciate if you help me.
23 June 2018 7,811 28 View
Does anyone have any information about mechanism of cyanotoxin production by cyanobacteria? Thanks
08 October 2014 6,237 4 View
