trace element in English
Also, aragonite tends to have much higher amounts of strontium as a trace element in the calcium carbonate.
Use "trace element" in a sentence
1. Trace element Bi in high purity nickel was determined by GFAAS in STPF conditions.
2. Mint Green Chrysoberyl is a rare form that is colored by the trace element vanadium
3. Objective: To investigate the effect of trace element lithium on the occurrence of endemic gaiter.
4. Mint Green Chrysoberyl is a rare form that is colored by the trace element vanadium
5. The time of analysis, precision and accuracy compare favourably with other methods for trace element analysis.
6. When the trace element is chromium, the color is red and the gemstone is called a ruby.
7. Trace-element abundances and ratios indicate that rocks of the Tudor and Kashwakamak formations are island-arc type.
8. These variables in turn alter moisture-holding capacity, chemical-binding capacity, aeration, and nutrient and trace element content.
9. 5 mg/kg, in absolute value, for contents of the trace element concerned up to 50 mg/kg,
10. mg/kg, in absolute value, for contents of the trace element concerned from # and up to # mg/kg
11. — 5 mg/kg, in absolute value, for contents of the trace element concerned up to 50 mg/kg,
12. Alga grew up around a chemical combine (producing phosphate, trace-element, and other fertilizers) on which construction began in 1930.
13. Immobile trace-element data represent a potentially valuable tool in stratigraphic correlation of Archean volcanic rocks, whether altered or unaltered.
14. It shows the closest trace-element affinity to pyrites from the Barberton Mountain Land, the source area model for the Witwatersrand sediments.
15. However, incompatible trace-element concentrations are strongly influenced by mantle metasomatism that occurred prior to, or synchronously with, the oldest alkalic rocks.
16. Trace-element data indicate these alkalic lavas have been generated by small, but variable, amounts of partial melting of a meta-somatized lherzolite source.
17. Major- and trace-element data suggest that least-altered volcanic rocks are of tholeiitic affinity and that there is no calc-alkaline unit in the HCF area.
18. Excavation and trace element analysis indicates: Jehol biota experienced mass mortality and rapid burial; toxic gases of the volcanic activities are the main factors of biological catastrophic event.
19. Major and trace element analyses reveal that the sills in the Oville-Formation, volcanic bombs, subvolcanic xenoliths and a plug within the pyroclastic rocks belong to the alkali rock series.
20. Starting from the trace element concentration of the unaltered rocks the behaviour of these elements is investigated in the different stages of the alteration of trachyte to alunite and X-ray amorphous SiO2.
21. Boron is a trace element that is naturally present in many foods and available as a dietary supplement. It is a structural component of plant cell walls and is required for plant growth, pollination, and seed formation [ 1 ].
22. Average trace element mobilities were generally higher in the tailings than in the underlying sandy colluvial and clayey alluvial soils and also showed an increase where the pH values of soils and tailings were lower than 5 and 3.5 respectively.
23. Major and trace element chemistry shows that the older series of granitic rocks were formed by differentiation of a calc-alkali magma in situ. The younger dikes are all highly silicic, show limited major element variation, and have been affected by hydrothermal metasomatism.
24. ¶To enhance the ability to distinguish tholeiitic from alkalic magma parentages by mineral compositions, I determined trace-element abundances in plagioclase separated from xenolithic gabbros of Mauna Kea volcano. These gabbros have origins in tholeiitic and alkalic magmas of the Hamakua postshield stage of Mauna Kea volcanism.
25. The most evolved lithofacies of the Ork and Thirtymile stocks is an alkali-feldspar-rich zinnwaldite–topaz–fluorite leucogranite that has an extremely evolved chemistry (differentiation index up to 99.4 and Rb/Sr ratio > 3000), with trace-element contents normally associated with "A-type" granites.
26. Authigenic carbonates recovered from two newly discovered active cold seeps on the northwestern slope of the South China Sea have been studied using petrography, mineralogy, stable carbon and oxygen isotopic, as well as trace element compositions, together with AMS 14 C ages of shells of seep-dwelling bivalves to unravel fluid sources, formation conditions, and seepage dynamics.
27. Lepidolite and lithian muscovite occur in high-pressure spodumene, low-pressure petalite, phosphorus-enriched amblygonite and fluorine-rich lepidolite subtypes of orogenic affiliated complex type granitic pegmatites and rarely in anorogenic affiliated amazonite-bearing Trace element data determined by X-ray fluorescence for lepidolite of various pegmatite subtypes, morphology (“book”, “scaly”, “fine-grained”), position within the pegmatite (primary zones, replacement units, pockets), mineral assemblages and tectonic affinity (orogenic vs anorogenic) show extreme fractionation of Rb and Cs; modest levels of T1, Ga, Nb, Ta, Sn and Zn; and typically low abundances of Ba, Sr, Ni, Pb, Y, V, W and Zr.