scholarly journals DISTRIBUTION PATTERN OF RARE EARTH ELEMENTS IN SOFT TISSUE OF SACCOSTREA CUCULLATA IN TERENGGANU AND EAST JOHOR COASTAL WATERS

2019 ◽  
Vol 3 (2) ◽  
pp. 14-19
Author(s):  
Siti Nabila Mat Ali ◽  
Muhammad Farhan Kammoo ◽  
Nik Nurizni Nik Ali ◽  
Mohd Fuad Miskon
Keyword(s):  
Rare Earth ◽  
Soft Tissue ◽  
Rare Earth Elements ◽  
Distribution Pattern ◽  
Coastal Waters ◽  
Saccostrea Cucullata

Influence of dissolved organic matter on rare earth elements and yttrium distributions in coastal waters

2010 ◽  
Vol 26 (2) ◽  
pp. 123-135 ◽  
Author(s):  
P. Censi ◽  
P. Zuddas ◽  
L. A. Randazzo ◽  
F. Saiano ◽  
S. Mazzola ◽  
...  
Keyword(s):  
Organic Matter ◽  
Rare Earth ◽  
Dissolved Organic Matter ◽  
Rare Earth Elements ◽  
Coastal Waters

scholarly journals Fractionation of Rare Earth Elements in Surface Sediment of Peninsular Malaysia Coastal Waters

2020 ◽  
Vol 33 (1) ◽  
pp. 166-170
Author(s):  
M.M. Fuad ◽  
F. Fikriah ◽  
B.Y. Kamaruzzaman ◽  
M.M. Rahman ◽  
N.A. Nik Nurizni
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Coastal Waters ◽  
Inductively Coupled Plasma ◽  
Environmental Fate ◽  
Atomic Weight ◽  
Peninsular Malaysia ◽  
Inductively Coupled ◽  
Contaminant Metals ◽  
Comparative Results

The environmental fate of rare earth elements (REEs) in the Malaysian environment is limitedly known; however, industrial emission is increasing. This study focused on the REE assessment of the surface sediments obtained from rocky shore ecosystems along the Peninsular Malaysia coastal waters, on deliberating interspatial variability, and on describing their partitioning. Samples were treated with the Teflon Bomb technique, and the concentration of 14 natural REEs was measured through inductively coupled plasma mass spectrometry (ICP-MS). Through quality control practices, the results were verified by employing a standard reference material BCR 667. The tendency of REE distribution was the most mutual property of particular places worldwide and in Malaysia. Among REEs present in sediment, strong correlations were observed, which indicated REEs they behave coherently to each other in different processes of geochemical fractionation. The contaminant metals, namely manganese, arsenic, cadmium and copper, were strongly correlated with REEs (p < 0.01 and p < 0.05); hence, these metals may be nonanthropogenic in origin because REEs are geogenic in origin. The enrichment factor (EF) values of the comparative results were divided by the region-specified deficiency to minimal enrichment in all the regions, except in the east coast region, which presented considerable enrichment, suggesting a probability of discharge of the anthropogenic effluent. The results of the analysis normalized to chondrite presented patterns of low atomic weight rare earth elements (LREEs) enrichment, gradual downward pattern and depletion through high atomic weight rare earth elements (HREEs) concentrations.

scholarly journals Geochemistry of the Rare Earth Elements (REE) Distribution in Terengganu Coastal Waters: A Study Case from Redang Island Marine Sediment

2013 ◽  
Vol 03 (03) ◽  
pp. 154-159 ◽  
Author(s):  
A. Nor Antonina ◽  
N. A. M. Shazili ◽  
B. Y. Kamaruzzaman ◽  
M. C. Ong ◽  
Y. Rosnan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Marine Sediment ◽  
Coastal Waters ◽  
Ree Distribution ◽  
Study Case ◽  
The Rare Earth

Distribution pattern of rare earth elements in fern

1998 ◽  
Vol 64 (1-3) ◽  
pp. 13-26 ◽  
Author(s):  
Femgfu Fu ◽  
Tasuku Akagi ◽  
Kazunori Shinotsuka
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Distribution Pattern

scholarly journals Assessment on the bioavailability of rare earth elements in rocky shore organisms and their potential effects on human health

2016 ◽  
Vol 15 (1) ◽  
Author(s):  
Mohd Fuad Miskon ◽  
Fikriah Faudz ◽  
Kamaruzzaman Yunus ◽  
Md. Mokhlesur Rahman
Keyword(s):  
Rare Earth ◽  
Soft Tissue ◽  
Rare Earth Elements ◽  
Human Health ◽  
Rocky Shore ◽  
Distribution Patterns ◽  
Peninsular Malaysia ◽  
Permissible Limits ◽  
Thais Clavigera ◽  
Icp Ms

Introduction: This study focuses on the distribution of rare earth elements in rocky shore ecosystem along east coast of Peninsular Malaysia coastal waters using the soft tissue of Saccostrea cucullata, Thais clavigera and Nerita chameleon as bioindicator, and deliberating on interspecies variability. The results were examined in relation to human health as well. Methods: Samples were treated using Teflon Bomb technique and concentrations of 14 naturally occurring REEs were measured using ICP-MS technique, along with selected trace metals for added data. Results:The results were certified using standard reference material BCR 668 with quality control practices. Constant REEs abundance patterns were found in all samples, with enrichment of LREEs over HREEs, which suggests that REEs are transported as a coherent group through aquatic ecosystems. There are variations in the REEs abundance for every site, however, they reveal connections in their REEs distribution patterns, which suggest that they are of parallel origins. As no data on the permissible limits of REEs in biota reported, assessment with permissible limits are quantified by comparing with Hg, Pb and Cd data as REEs concentrations seems to be lower compared with these metal values. Conclusions: Results showed that the values are considerably below the safety limit, with the exception of Ce and Nd in the soft tissue of S. cucullata.

The distribution pattern of Rare Earth Elements (REE) in Vitis vinifera L. discriminates the substrate of growth ?

2020 ◽  
Author(s):  
Marcella Barbera ◽  
Pierpaolo Zuddas ◽  
Filippo Saiano
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Vitis Vinifera ◽  
Distribution Pattern ◽  
Vitis Vinifera L ◽  
Experimental Conditions ◽  
Plant Parts ◽  
Aerial Parts ◽  
Order Of Magnitude ◽  
Leaves And Roots

&lt;p&gt;Rare Earth Elements (REE) have been employed to stimulate the plant growth in national and international strategies while their role still remains controversial as the process involved in soil-plant system is not completely understood yet. &amp;#160;&lt;/p&gt;&lt;p&gt;In this study we have investigated the effect of REE amount in the substrate during the Vitis vinifera L growth analysing the REE distribution in the different part of the plants. Experiments were carried out over 1 year using two different substrates: one with a &quot;natural&quot; substrate (blank experiments) and another using the same substrate artificially enriched by an equimolar solution of REE (spiked experiments).&lt;/p&gt;&lt;p&gt;We found that both plant mass and amount of REE in leaves are both not influenced by the substrate enrichment. However, roots are by 1 order of magnitude enriched in REE for the 3 orders of magnitude enriched substrate of growth. This indicates that Vitis vinifera L. does not significantly transfer REE into the aerial parts during growth while identify roots as the plant critical parts responsible for the filtering of the environmental stress.&amp;#160; Plotting the REE normalized distribution for every element, the different experimental conditions can be significantly discriminated: under spiked substrate conditions, REE normalised distribution shows a &amp;#8216;zig zag&amp;#8217; pattern in both leaves and roots. We propose that the REE normalised distribution pattern measured in the different plant parts (leaves and roots) can be used to discriminates the conditions of substrate characteristics during the vitis vinifera growth. Acting as natural tracers, the REE normalised distribution could be potentially used as tool tracing the substrate origin of the Vitis vinifera plant.&amp;#160;&lt;/p&gt;

scholarly journals AGE AND PETROGENESIS OF ACID VOLCANITES OF THE ALGANSKY MOUNTAINS OF THE KORYAK HIGHLANDS (NORTHEASTERN OF RUSSIA)

2021 ◽  
pp. 3-20
Author(s):  
P.I. Fedorov ◽  
◽  
A.V. Moiseev ◽  
S.A. Palandzhyan ◽  
I.V. Gul’pa ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Distribution Pattern ◽  
Late Eocene ◽  
Island Arc ◽  
Northwestern Part ◽  
Crustal Anatexis ◽  
Isotopic Dating

The isotopic dating of U-Pb by the zircon method of volcanic acid zircons of the Konachan complex (Algansky mountains, northwestern part of the Koryak highlands) confirmed their Late Eocene age (34.6 ± 0.5-38.8 ± 0.4 Ma, Priabon). It has been shown that silicic rocks are represented by moderately potassium, peraluminous (ASI = 1.23–1.30), moderately and high magnesian differences, often with a high content of Cr and Ni. The contents of Sr, Y and Yb are adakite. High ratios of 143Nd/144Nd and low 87Sr/86Sr in the rocks of the complex, the distribution pattern of rare and rare-earth elements suggest that the source of salite melt, to some extent contaminated by sedimentary material, was metabasites. The formation of the Konachan complex is caused by magmatism during accretion of terranes of the Olyutor-East Kamchatka island-arc system [27]; compression processes led to the blocking of the upwelling front of the continental asthenosphere, initiating intense crustal anatexis and silicate magmatism.

Sign in / Sign up

Export Citation Format

Share Document