scholarly journals X-ray Fluorescence Techniques in Determining the Habitat Preferences of Species—Ulva pilifera (Ulvales, Chlorophyta) from Montenegro Case Study

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5022
Author(s):  
Joanna Czerwik-Marcinkowska ◽  
Renata Piwowarczyk ◽  
Bohuslav Uher ◽  
Ewa Tomal ◽  
Anna Wojciechowska
Keyword(s):  
Trace Elements ◽  
Marine Pollution ◽  
Habitat Preferences ◽  
Molecular Techniques ◽  
X Ray ◽  
Worldwide Distribution ◽  
Trace Elements In Water ◽  
Bright Green ◽  
The One ◽  
First Time

The paper presents four new sites where bright green Ulva thalli were found inhabiting freshwater (a river, a ditch, the Milet Canal) and marine (on the rocky shore of the Adriatic Sea) habitats in Montenegro. The aims of this study were to determine, for the first time, whether specimens of Ulva pilifera collected in Montenegro are phylogenetically and morphologically the same species as the one occurring in Europe. Using total reflection X-ray fluorescence (TXRF) and wavelength dispersive X-ray fluorescence (WDXRF) techniques it assessed the elemental composition of their thalli and its influence to colonise new habitats. Elements: Al, As, Ba, Br, Ca, Cl, Cr, Cu, Fe, Hf, I, K, Mg, Mn, Na, Ni, P, Pb, Rb, S, Si, Sr, Ti, V, and Zn were determined. The highest elemental concentrations were found for Ca = 16.3% (using WDXRF) and for Sr = 292 ppm (using TXRF) in the Ulva thalli. Ulva pilifera analysed from Montenegro, based on classical morphological methods and molecular techniques, are closely related to the same species from inland and coastal waters throughout Europe. The analysis of trace elements showed that the metal content in Ulva thalli is correlated with the trace elements in water and sediments. Ulva pilifera fits numerous features that make it one of the bioindicators of marine pollution, thanks to its worldwide distribution and capacity to accumulate trace elements.

CsOH and its Lighter Homologues – a Comparison

2014 ◽  
Vol 69 (11-12) ◽  
pp. 1229-1236
Author(s):  
Matthias Wörsching ◽  
Constantin Hoch
Keyword(s):  
Gas Phase ◽  
Room Temperature ◽  
Structure Type ◽  
Alkali Metal Hydroxide ◽  
X Ray ◽  
Raman Spectroscopic ◽  
Cesium Hydroxide ◽  
Free Ion ◽  
The One ◽  
First Time

Abstract Cesium hydroxide, CsOH, was for the first time characterised on the basis of single-crystal data. The structure is isotypic to the one of the room-temperature modification of NaOH and can be derived from the NaCl structure type thus allowing the comparison of all alkali metal hydroxide structures. Raman spectroscopic investigations show the hydroxide anion to behave almost as a free ion as in the gas phase. The X-ray investigations indicate possible H atom positions.

Investigation of the Multielement Capability of Laser-Enhanced Ionization Spectrometry in Flames for Analysis of Trace Elements in Water Solutions

1987 ◽  
Vol 41 (1) ◽  
pp. 19-26 ◽  
Author(s):  
O. Axner ◽  
I. Magnusson ◽  
J. Petersson ◽  
S. Sjöström
Keyword(s):  
Trace Elements ◽  
Detection Limit ◽  
Trace Element Analysis ◽  
Frequency Doubling ◽  
Ultraviolet Region ◽  
Element Analysis ◽  
Coumarin 153 ◽  
One Step ◽  
Trace Elements In Water ◽  
First Time

One-step Laser-Enhanced Ionization (LEI) spectrometry of 23 different elements in aqueous solutions has been performed in an acetylene/air flame. All elements were detected by light in the ultraviolet region, produced by frequency doubling of the output from the dye Coumarin 153. This was done in order to investigate the multielement capability of LEI in flames that has been made possible by the recent development of commercially available, widely tunable dyes. Among the elements detected, 9 (As, Au, In, Mn, Pb, Sb, Tl, W, Yb) show detection limits which are superior to those reported in the literature for one-step LEI. The lowest detection limit obtained in this investigation was 1 pg/mL for In. Four of the elements (As, Sb, Yb, W) are reported as being detected by LEI for the first time. The multielement capabilities of LEI as a method for trace element analysis are discussed.

MILD HYDROTHERMAL SYNTHESIS, CRYSTAL STRUCTURE AND MORPHOLOGY OF LiV2O5

2015 ◽  
Vol 9 (1) ◽  
pp. 2299-2302
Author(s):  
GülÅŸah çelik gül ◽  
Figen KurtuluÅŸ
Keyword(s):  
Anode Materials ◽  
Storage Capacity ◽  
Electronic Devices ◽  
X Ray ◽  
Cell Parameters ◽  
High Storage Capacity ◽  
Li Ion ◽  
The One ◽  
First Time ◽  
High Storage

Anode materials with high storage capacity and high power density attract considerable interest because of recent advances in Li-ion battery used electronic devices. Vanadium based oxides are the one possible group. LiV2O5 was synthesized by hydrothermal method at 3 days (72 hours) and 180 ºC. Structural characterization was performed by powder X-ray diffractometer and fourier transform infrared spectroscopy. Morphology was scanned by scanning electron microscopy with energy disperse X-ray analysis. The first time synthesized material is crstallisized in orthorombic system with unit cell parameters a = 11.31, b = 9.552, c = 3.585 Å and space group Pmn21 (31). 

PRELIMINARY REPORT ON THE PIXE ANALYSIS OF THE SQUID STATOLITHS

1995 ◽  
Vol 05 (02n03) ◽  
pp. 159-162 ◽  
Author(s):  
YUZURU IKEDA ◽  
NOBUAKI ARAI ◽  
WATARU SAKAMOTO ◽  
TATSURO MURAYAMA ◽  
KUMKO MAEDA ◽  
...  
Keyword(s):  
Trace Elements ◽  
Preliminary Report ◽  
Pixe Analysis ◽  
X Ray ◽  
Fish Otolith ◽  
Common Squid ◽  
Main Component ◽  
First Time ◽  
Japanese Common Squid

Micro trace elements in the squid statolith, a calcareous stone which acts as a balancer and hearing, was analyzed with Particle Induced X-ray Emission (PIXE) for the Japanese common squid for the first time. Calcium is the main component of the squid statoliths, which means that squid statolith is the pure calcified structure similar to the fish otolith. Beside Ca, Sr was detected with strong dosage, and some other elements as Mn, Fe, Cu, Zn and As were also detected. Possible assumption of intake of microelemts to the statoliths and the suitability of PIXE for statoliths analysis are discussed.

scholarly journals Synthesis and Characterization of Unsymmetrical Double-Decker Siloxane (Basket Cage)

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4252 ◽  
Author(s):  
Rungthip Kunthom ◽  
Nobuhiro Takeda ◽  
Masafumi Unno
Keyword(s):  
29Si Nmr ◽  
Cage Compounds ◽  
One Pot ◽  
X Ray ◽  
X Ray Crystallography ◽  
Double Decker ◽  
Novel Structure ◽  
The One ◽  
First Time

The one-pot synthesis of an unsymmetrical double-decker siloxane with a novel structure via the reaction of double-decker tetrasodiumsilanolate with 1 equiv. of dichlorotetraphenyldisiloxane in the presence of an acid is reported herein for the first time. The target compound bearing all phenyl substituents on the unsymmetrical siloxane structure was successfully obtained, as confirmed by 1H-NMR, 13C-NMR, 29Si-NMR, IR, MALDI-TOF, and X-ray crystallography analyses. Additionally, the thermal properties of the product were evaluated by TG/DTA and compared with those of other siloxane cage compounds.

Preconcentration methods for the determination of trace elements in water by x-ray fluorescence spectrometry

1982 ◽  
Vol 142 ◽  
pp. 73-87 ◽  
Author(s):  
Andrew T. Ellis ◽  
Donald E. Leyden ◽  
Wolfhard Wegscheider ◽  
Bruce B. Jablonski ◽  
William B. Bodnar
Keyword(s):  
Trace Elements ◽  
Fluorescence Spectrometry ◽  
X Ray ◽  
Trace Elements In Water

TRACE ELEMENTS IN WATER AND BIOLOGICAL SAMPLES DETERMINED BY X-RAY SPECTROSCOPY

1980 ◽  
pp. 513-522
Author(s):  
A. Ljubifčić ◽  
I. Orlić ◽  
V. Valković ◽  
B. Bek ◽  
S. Holjević ◽  
...  
Keyword(s):  
Trace Elements ◽  
Biological Samples ◽  
X Ray ◽  
Trace Elements In Water ◽  
Water And Biological Samples
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