Generally, we use a term anomaly for an REE when it shows enrichment/depletion with respect to its neighbours such as the famous one is Europium (Eu) anomaly having Samarium (Sm) on its left side and Gadolinium (Gd) on the right side. Eu-anomaly is generally related to the plagioclase mineral as Eu prefers preferentially to stay in this mineral over the others. In the case of Lanthanum (La) we don’t have an element on its left side, so given that can we use La anomaly with reference to Cerium (Ce) only, an element next it.
Is La anomaly useful to track down the anthropogenic activities given that REEs are being used extensively in tech-based industries if not significant in describing the natural REE geochemistry?
Re: not significant in describing the natural REE geochemistry?
The last knowledge about the light lanthanides’ microbiology has drastically changed our point of view on this subject; according to Shiller et al., the biological uptake of REE is "an overlooked aspect of the oceanic geochemistry"
Best regards
https://www.nature.com/articles/s41598-017-11060-z.pdf
La and Ce positive anomaly could be an indicator of mobility and enrichment
Hani Khoury Thanks for the input. Do you have any related paper to share. Best wishes, Arshad
Hani Khoury In my samples I get High La content and Low Ce what does that indicate?
I agree with Dr. Hani Khoury, regarding the application of La and Ce anomaly, which is very instructive. As far as its applications in terms of the contaminants from Tech-Based Industries, the extensive application of Ce, Eu, Nd, Y, Sm, Dy to name a few, are more extensively used in "Green-Technology". You could see the recent instructive Review Publication, "Rare Earth Elements: A review of applications, occurrence, exploration, analysis, recycling, and environmental impacts", published in Geoscience Frontiers, https://doi.org/10:1016/j.gsf.2018.12.005
Best Wishes,
Thanks Dr. Sengupta for your input. The provided link is erroneous, so please share the PDF if possible.
Please send me your mail id and I would send the same ASAP.
My mail id [email protected]
With Best Wishes,
Debashish
Dear Dr. Arshad Ali,
Enclosed as attachment, please find two relevant publications which should be able to answer your recent query.
With Best Wishes,
Debashish Sengupta
Professor (H.A.G.), Department of Geology
& Geophysics, Indian Institute of Technology Kharagpur
West Bengal, INDIA
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