The behavior of a given element in soil (i.e., the determination of its accumulation or leaching) may be established by comparing concentrations of a trace element with a reference element. The result obtained is described as an enrichment factor (EF). The reference element may be Fe or Al or some other elements. Cn is content of the examined element in the soil, Cref is content of the examined element in the Earth’s Crust, Bn is content of the reference element in the soil, and Bref is content of the reference element in
the Earth’s Crust.
it is the same formula
dont worry
if we consider it in numbers and you will calculate it it is the same
for exmp.
Cn=15, Bn=12, Cref=3 and Bref =4
and you didnt the same calculaion you will get the same results =1.6666
please see this paper for me also it may helps you :
https://www.researchgate.net/publication/309463664_Environmental_Assessment_of_Heavy_Metal_Pollution_and_Human_Health_Risk?_iepl%5BviewId%5D=aWLS97BYGKFfqyvfwmlqyD7i&_iepl%5BprofilePublicationItemVariant%5D=default&_iepl%5Bcontexts%5D%5B0%5D=prfpi&_iepl%5BinteractionType%5D=publicationTitle
regards
Article Environmental Assessment of Heavy Metal Pollution and Human ...
Why considering the Earth Crust element content? What's the point? Should I not study the element content of the parent material?
The parent material is stream sediments which have composition varies considerably from place to place based on the drained area and type of sediment sources. I have the values of the average composition of soil worldwide but still looking for the average composition of stream sediments to use it for comparison.
I think you should somehow get samples of the specific stream sediments, from deeper horizons (C horizons), and see the elemental composition (if possible).
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