Can one use the background concentration known soil samples in the calculation of EF of particulate matter pollution?

More Francis Olawale Abulude's questions See All

Is this not going beyond ones boundary?

Colleagues, I need your candid advise/opinion with regards to investing ones precious time. Does it make any sense for a chemist to invest his/her time in the compilation of plant, weed, shrub...

05 June 2019 995 4 View

What are relationship between enrichment and contamination Factors?

If a particulate matter or soil sample has a high enrichment factor (EF) is it possible for the sample to have a low contamination factor (CF)? Example From the calculations of a result, it was...

05 June 2019 1,684 8 View

Back trajectory techniques in air pollution?

Can somebody assist me to draw back trajectory? I need this for my thesis write up to be presented in January, 2019. Thanks Abulude F.O. [email protected]

11 December 2018 6,646 2 View

How does Air pollution low-cost sensors work?

I want to monitor the air using low-cost sensors. Before buying, I want to find out how they work. Do they work independently or are they accessories to air detectors? What I mean is can they...

07 August 2018 4,549 2 View

Can you assist in the convertion of EDXRF concentration?

Elements in my PM samples were analyzed using EDXRF. The concentrations were obtained in cm2. Can anybody teach me how to convert to ug/m3 or ppm? Example Ar - 989.614 cm2 (this is the conc...

06 July 2018 7,999 2 View

Can anyone assist me with the free software of Statistica and R or any software that can draw excellent graphical representations?

I need to draw excellent graphs/charts from my data. Please I need assistance with free software for R/Statistical or any other excellent ones that I can use. I want my paper to be accepted in...

03 April 2018 2,038 5 View

Where can I get assistance for the determination of PAHs and BC of my air samples?

I have PM samples on which I wish to determine PAHs and BC. It would be appreciated if I can get researchers to collaborate with who will be willing to do the analyses. Please suggest...

02 March 2018 3,860 0 View

Protocols of determinations of PAH, EC and ions. Can anybody assist me on these?

Colleagues, I need to determine PAHs, Carbons and ions in my air samples. Can anybody assist me with the step by step protocols/methods? Thanks

02 March 2018 7,752 4 View

Do you know the differences between Technical Note and Manual?

Many journals accept manuscript submissions as Technical Note and Manual. What are the differences between the two terms?

06 July 2017 1,809 0 View

pH why not PH?

The pH of a solution is a measure of its ratio of hydrogen atoms to hydroxide radicals, which are molecules composed of one oxygen and one hydrogen atom. Why do we write it as pH why not PH?

05 June 2017 1,387 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View