Geochemical characteristics of carbonates and indicative significance of the sedimentary environment based on carbon-oxygen isotopes, trace elements and rare earth elements: case study of the Lower Paleozoic carbonates in the Gucheng area, Tarim Basin, China

In the Tanshan area, which is at the Liupanshui Basin, abundant oil shale resources are associated with coals. We analyzed the cores, geochemistry of rare earth elements (REE) and trace element of oil shale with ICP-MS technology to define the palaeo-sedimentary environment, material source and geological significance of oil shale in this area. The results of the summed compositions of REE, and the total REE contents (SREE), in the Yan'an Formation oil shale are slightly higher than the global average of the composition of the upper continental crustal (UCC) and are lower than that of North American shales. The REE distribution pattern is characterized by right-inclined enrichment of light rare earth elements (LREE) and relative loss of heavy rare earth elements (HREE), which reflects the characteristics of crustal source deposition. There is a moderate degree of differentiation among LREE, while the differences among HREE are not obvious. The dEu values show a weak negative anomaly and the dCe values show no anomaly, which are generally consistent with the distribution of REE in the upper crust. The characteristics of REE and trace elements indicate that the oil shale formed in an oxygen-poor reducing environment and that the paleoclimatic conditions were relatively warm and humid. The degree of differentiation of REE indicates that the sedimentation rate in the study area was low, which reflected the characteristics of relatively deep sedimentary water bodies and distant source areas. The results also proved that the source rock mainly consisted of calcareous mudstone, and a small amount of granite was also mixed in.

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Seasonal changes in concentrations of trace elements and rare earth elements in shoot samples of Juncus effusus L. collected from natural habitats in the Holy Cross Mountains, south-central Poland

Chemosphere ◽

10.1016/j.chemosphere.2018.12.062 ◽

2019 ◽

Vol 219 ◽

pp. 954-960 ◽

Cited By ~ 3

Author(s):

Karina Krzciuk ◽

Agnieszka Gałuszka

Keyword(s):

Trace Elements ◽

Rare Earth ◽

Rare Earth Elements ◽

Seasonal Changes ◽

Juncus Effusus ◽

Natural Habitats ◽

Holy Cross Mountains ◽

Central Poland ◽

South Central

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Effective procedures for the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, U and rare earth elements in plants and foodstuffs

Analytical Methods ◽

10.1039/c8ay01295d ◽

2018 ◽

Vol 10 (33) ◽

pp. 4094-4103 ◽

Cited By ~ 21

Author(s):

Fernanda Pollo Paniz ◽

Tatiana Pedron ◽

Bruna Moreira Freire ◽

Daiane Placido Torres ◽

Fábio Ferreira Silva ◽

...

Keyword(s):

Trace Elements ◽

Rare Earth ◽

Rare Earth Elements ◽

Icp Ms ◽

International Regulations ◽

Effective Procedures

There are several international regulations regarding trace elements. The use of ICP-MS for their determination is usually a difficult task, especially when Hg is one of the target elements.

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Geochemical characteristics of rare earth elements in the surface sediments from the Spratly Islands of China

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2016.10.016 ◽

2017 ◽

Vol 114 (2) ◽

pp. 1103-1109 ◽

Cited By ~ 2

Author(s):

Jingxi Li ◽

Chengjun Sun ◽

Li Zheng ◽

Xiaofei Yin ◽

Junhui Chen ◽

...

Keyword(s):

Rare Earth ◽

Rare Earth Elements ◽

Surface Sediments ◽

Geochemical Characteristics ◽

Spratly Islands

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Comparison of the Mineral and Nutraceutical Profiles of Elephant Garlic (Allium ampeloprasum L.) Grown in Organic and Conventional Fields of Valdichiana, a Traditional Cultivation Area of Tuscany, Italy

Biology ◽

10.3390/biology10101058 ◽

2021 ◽

Vol 10 (10) ◽

pp. 1058

Author(s):

Stefano Loppi ◽

Riccardo Fedeli ◽

Giulia Canali ◽

Massimo Guarnieri ◽

Stefano Biagiotti ◽

...

Keyword(s):

Trace Elements ◽

Rare Earth ◽

Rare Earth Elements ◽

Water Content ◽

Human Health ◽

Soluble Sugars ◽

Allium Ampeloprasum ◽

Icp Ms ◽

Essential Trace Elements ◽

Reference Plant

In the Valdichiana area (Tuscany, Italy) an ancient native landrace of elephant garlic (Allium ampeloprasum L.), locally known as “Aglione della Valdichiana”, has long been cultivated. The aim of this study was to check whether there are differences in the mineral and nutraceutical profiles of the Aglione della Valdichiana cultivated conventionally and organically. Based on the analysis by ICP-MS of a wide array of major, minor, essential, and non-essential trace elements as well as rare earth elements, and the evaluation of the content of polyphenols, flavonoids, antioxidants, soluble proteins, soluble sugars, and starch, as well as the weight and water content, it was concluded that differences in the mineral and nutraceutical profiles of organically and conventionally grown bulbs were very limited. Only a statistically (p < 0.05) higher concentration of Cd (+2620%), Co (+113%), Mn (+55%), Rb (+180%), and Sb (+180%), as well as glucose (+37%) in conventionally cultivated bulbs emerged. Cadmium was the only element slightly higher than in the “reference plant,” but with a negligible risk (three orders of magnitude lower) for human health based on consumption. It is concluded that we failed to find evidence of healthier food or a higher nutraceutical quality for organically cultivated elephant garlic.

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