08 August 2016 1 6K Report

I collected rainwater samples for a year. I want to analyse FA, Cluster analysis and PCA. How do I interpret - Biplot, Scree Plot, Score Plot and loading plot and Cluster Analysis?

More Francis Olawale Abulude's questions See All
Can one use the background concentration known soil samples in the calculation of EF of particulate matter pollution?

I wish to calculate the Enrichment Factor (EF) of particulate matter samples. Can I use the background concentration of soil for the calculation? Thanks Francis

07 August 2019 9,556 3 View

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

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