Archive for the ‘Hot Article’ Category

Correlating Mg/Ca ratios with paleotemperatures: LIBS is the new way!

What if there were actual dinosaurs on Isla Nublar as depicted in Spielberg’s Jurassic Park? What if they had succeeded in conquering the world? What would the dinosaurs be like? Palaeontology helps us to answer such questions. The world surrounding us today is a consequence of a series of events that happened over a long period of time. Looking back in time by reconstruction of the climatic and environmental variability in the past helps us to understand the current climatic, geographical as well as anthropological makeup of our world.

The study of biological remains from archaeological sites is useful to reconstruct the past climate and gain insight into human activities. Among these, shells of molluscs are excellent archives of  environmental conditions that existed during the life of the organism as well as indicators of human behaviour.

The chemical makeup of the shells as well as stable isotope ratios, mainly δ18O are associated with the sea water temperature. Trace element (such as Mg, Ca) ratios in the biogenic carbonate of shells provide geochemical data of high potential. A strong correlation of Mg/Ca with temperature has been shown in experimental work on different molluscs. But the analytical techniques used for the study involved long sample preparation procedures, microgram order of samples and are cost ineffective. In order to overcome these problems,  J. O. Caceres et al. at Complutense University, Spain, have shown for the first time the usage of Laser Induced Breakdown Spectroscopy (LIBS) to obtain the Mg/Ca ratios in the shells of modern specimens of the mollusc Phorcus lineatus.

In their recent JAAS article, they have demonstrated the feasibility of the LIBS technique as an analytical methodology for the determination of climate patterns and their correlation with other techniques such as δ18O. LIBS analysis of 47 samples of P. lineatus collected over a period of a year was carried out to evaluate the potential of Mg/Ca ratios in the shells to infer sea water paleotemperatures. ‘LIBS allow us to obtain results quickly with considerable cost reduction without the loss of archaeological materials’, conclude J. O. Caceres et al.

To learn more about the detailed analysis and correlation of Mg/Ca ratios with sea water paleotemperatures by using LIBS, read the full article for free* by using the following link-

Mg/Ca ratios measured by laser induced breakdown spectroscopy (LIBS): a new approach to decipher environmental conditions
A. García-Escárzaga, S. Moncayo, I. Gutiérrez-Zugasti, M. R. González-Morales, J. Martín-Chivelet and J. O. Cáceres
J. Anal. At. Spectrom., 2015, 30, 1913-1919
DOI: 10.1039/C5JA00168D


About the webwriter
Sushil Benke is a graduate student under the supervision of Dr. H. N. Gopi in the Department of Chemistry at Indian Institute of Science Education and Research (IISER), Pune. His research focuses on the development of novel antimicrobial peptidomimetics.

*Access is free through a registered RSC account.

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HOT articles in JAAS

Take a look at our recent HOT JAAS articles, these are now free to access for the next few weeks!

Speciation Analysis of Antimony in Water Samples via Combined Nano-Sized TiO2 Colloid Preconcentration and AFS Analysis
Xingwen Wang,   Xuankun Li,   Xu Zhanga and   Shahua Qian
J. Anal. At. Spectrom., 2014, 29, 1944-1948
DOI: 10.1039/C4JA00147H
Graphical Abstract

Laser ablation of an indium target: time-resolved Fourier-transform infrared spectra of In I in the 700–7700 cm−1 range
S. Civiš, P. Kubelík, M. Ferus, V. E. Chernov, E. M. Zanozina and L. Juha
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00123K

Laser-Ablation Sampling for Inductively Coupled Plasma Distance-of-Flight Mass Spectrometry
Alexander Gundlach-Graham, Elise A. Dennis, Steven J. Ray, Christie G. Enke, Charles J. Barinaga, David W. Koppenaal and Gary M. Hieftje
J. Anal. At. Spectrom., 2015, Advance Article
DOI: 10.1039/C4JA00231H

Characterization of laser ablation sample introduction plasma plumes in fs-LA-ICP-MS
N. L. LaHaye, S. S. Harilal, P. K. Diwakar and A. Hassanein
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00200H

Determination of Total Uranium and Uranium Isotope Ratios in Human Urine by ICP-MS: Results of an Interlaboratory Study
John G. Arnason, Christine N. Pellegri and Patrick J. Parsons
J. Anal. At. Spectrom., 2015, Advance Article
DOI: 10.1039/C4JA00235K
Graphical Abstract
Traceable Assigned Values in External Quality Assessment Schemes Compared to Those Obtained by Alternative Procedure: A Case Study for Cu, Se and Zn in Serum
Marina Patriarca, Cas Weykamp, Josiane Arnaud, Robert L. Jones, Patrick J. Parsons and Andrew Taylor
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00260A

Oxygen-18 stable isotope of exhaled breath CO2 as a non-invasive marker of Helicobacter pylori infection
Abhijit Maity, Suman Som, Chiranjit Ghosh, Gourab Dutta Banik, Sunil B. Daschakraborty, Shibendu Ghosh, Sujit Chaudhuri and Manik Pradhan
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00280F

Development of a fast laser ablation-inductively coupled plasma-mass spectrometry cell for sub-µm scanning of layered materials
Stijn J. M. Van Malderen, Johannes T. van Elteren and Frank Vanhaecke
J. Anal. At. Spectrom., 2015, Advance Article
DOI: 10.1039/C4JA00137K

High-precision measurements of tungsten stable isotopes and application to Earth Sciences
Thomas Breton and Ghylaine Quitté
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00184B
Graphical Abstract

Elemental recoveries for metal oxide nanoparticles analysed by direct injection ICP-MS: influence of particle size, agglomeration state and sample matrix
Sylvie Motellier, Arnaud Guiot, Samuel Legros and Brice Fiorentino
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00213J

Exploration of a 3D Nano-channel Porous Membrane Material Combined with Laser-induced Breakdown Spectrometry for Fast and Sensitive Heavy Metal Detection of Solution Samples
Qi Shi, Guanghui Niu, Qingyu Lin, Xu Wang, Jie Wang, Fang Bian and Yixiang Duan
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00220B

Direct element analysis of honeys by atmospheric pressure glow discharge generated in contact with flowing liquid cathode
Krzysztof Greda, Piotr Jamroz, Anna Dzimitrowicz and Pawel Pohl
J. Anal. At. Spectrom., 2015, Advance Article
DOI: 10.1039/C4JA00261J

Excitation of higher levels of singly charged copper ions in argon and neon glow discharges
Zdeněk Weiss, Edward B. M. Steers, Juliet C. Pickering, Volker Hoffmann and Sohail Mushtaq
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00309H

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Recent HOT articles in JAAS

Take a look at these new HOT articles just published in JAAS. These papers will be free to read for the next 4 weeks. Enjoy!

A centrifugal microfluidic platform integrating monolithic capillary columns for high-throughput speciation of chromium
Peng Li, Yi-jun Chen, Hong-zhen Lian and Xin Hu
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00149D, Paper

The non-destructive determination of Pt in ancient Roman gold coins by XRF spectrometry
Michael W. Hinds, George Bevan and R. W. Burgess
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00170B, Paper

Grazing incidence X-ray fluorescence of periodic structures – a comparison between X-ray standing waves and geometrical optics calculations
Falk Reinhardt, Stanisław H. Nowak, Burkhard Beckhoff, Jean-Claude Dousse and Max Schoengen
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00164H, Paper

Enhancement of analyte atomic lines with excitation energies of about 5 eV in the presence of molecular gases in analytical glow discharges
Sohail Mushtaq, Edward B. M. Steers, Juliet C. Pickering and Petr Šmid
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00193A, Communication

Spectroscopic characterization and comparison between biologics, organics and mineral compounds using pulsed micro-hollow glow discharge
Randy L. Vander Wal, Chethan K. Gaddam and Michael J. Kulis
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00187G, Paper

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Recent HOT articles in JAAS

Take a look at these new HOT articles just published in JAAS. These papers will be free to read for the next 4 weeks. Enjoy!

Diode laser thermal vaporization ICP MS with a simple tubular cell for determination of lead and cadmium in whole bloodDiode laser thermal vaporization ICP MS with a simple tubular cell for determination of lead and cadmium in whole blood
Pavla Foltynová, Antonín Bednařík, Viktor Kanický and Jan Preisler
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00113C

Sequence-specific recognition of single-stranded DNA using atomic absorption spectrometry

Hong Zhang, Zhifang Zhu, Zunxiang Zeng and Liansheng Ling
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00087K

Highly efficient single-cell analysis of microbial cells by time-resolved inductively coupled plasma mass spectrometry
Shin-ichi Miyashita, Alexander S. Groombridge, Shin-ichiro Fujii, Ayumi Minoda, Akiko Takatsu, Akiharu Hioki, Koichi Chiba and Kazumi Inagaki
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00040D

Method for isotope ratio drift correction by internal amplifier signal synchronization in MC-ICPMS transient signals
Cadmium isotope ratio measurements in environmental matrices by MC-ICP-MS
Alkiviadis Gourgiotis, Sylvain Bérail, Pascale Louvat, Hélène Isnard, Julien Moureau, Anthony Nonell, Gérard Manhès, Jean-Louis Birck, Jérôme Gaillardet, Christophe Pécheyran, Frédéric Chartier and Olivier F. X. Donard
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00118D

Cadmium isotope ratio measurements in environmental matrices by MC-ICP-MS

Nicola Pallavicini, Emma Engström, Douglas C. Baxter, Björn Öhlander, Johan Ingri and Ilia Rodushkin
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00125G

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HOT articles in JAAS

Take a look at these new HOT articles just published in JAAS. These papers will be free to read for the next 4 weeks. Enjoy!

Determination of fluorine in plant materials via calcium mono-fluoride using high-resolution graphite furnace molecular absorption spectrometry with direct solid sample introduction
Aline R. Borges, Luciane L. François, Bernhard Welz, Eduardo Carasek and Maria Goreti R. Vale 
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00067F, Paper

Spectroscopic imaging: a spatial Odyssey
Freddy Adams 
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00050A, Perspective

Ethnic background and gender identification using electrothermal vaporization coupled to inductively coupled plasma optical emission spectrometry for forensic analysis of human hair
Lily Huang and Diane Beauchemin 
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00071D, Paper

Development and characterization of custom-engineered and compacted nanoparticles as calibration materials for quantification using LA-ICP-MS
Daniel Tabersky, Norman A. Luechinger, Michael Rossier, Eric Reusser, Kathrin Hametner, Beat Aeschlimann, Daniel A. Frick, Samuel C. Halim, Jay Thompson, Leonid Danyushevsky and Detlef Günther 
J. Anal. At. Spectrom., 2014,29, 955-962
DOI: 10.1039/C4JA00054D, Paper

Compensation of inorganic acid interferences in ICP-OES and ICP-MS using a Flow Blurring® multinebulizer
Miguel Ángel Aguirre, Lucimar L. Fialho, Joaquim A. Nóbrega, Montserrat Hidalgo and Antonio Canals 
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00079J, Paper

LA-ICP-MS Pb–U dating of young zircons from the Kos–Nisyros volcanic centre, SE Aegean arc
M. Guillong, A. von Quadt, S. Sakata, I. Peytcheva and O. Bachmann 
J. Anal. At. Spectrom., 2014,29, 963-970
DOI: 10.1039/C4JA00009A, Paper

Old traces, read anew – ‘The Reading Hermit’ painting in the light of X-ray fluorescence
C. Seim, C. Laurenze-Landsberg, B. Schröder-Smeibidl, I. Mantouvalou, C. de Boer and B. Kanngießer 
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50301A, Paper

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HOT articles in JAAS

Take a look at these new HOT articles just published in JAAS. These papers will be free to read for the next 4 weeks. Enjoy!

Effect of oxygen in sample carrier gas on laser-induced elemental fractionation in U–Th–Pb zircon dating by laser ablation ICP-MS
Jan Košler, Simon E. Jackson, Zhaoping Yang and Richard Wirth
J. Anal. At. Spectrom., 2014,29, 832-840
DOI: 10.1039/C3JA50386K, Paper

What happens when n= 1000? Creating large-n geochronological datasets with LA-ICP-MS for geologic investigations
Alex Pullen, Mauricio Ibáñez-Mejía, George E. Gehrels, Juan C. Ibáñez-Mejía and Mark Pecha
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00024B, Paper Graphical abstract: Development and application of an analyte/matrix separation procedure for multi-element trace analysis of steel alloys by means of sector-field ICP-mass spectrometry

Elemental and isotopic analysis of americium in non-separated spent fuels using high resolution ICP-OES and sector field ICP-MS
Michael Krachler, Rafael Alvarez-Sarandes and Stefaan Van Winckel
J. Anal. At. Spectrom., 2014,29, 817-824
DOI: 10.1039/C4JA00068D, Paper

Impact of humidity on speciation and bioaccessibility of Pb, Zn, Co and Se in house dust
Pat E. Rasmussen, Suzanne Beauchemin, Lachlan C. W. Maclean, Marc Chénier, Christine Levesque and H. David Gardner
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00058G, Paper

Development and application of an analyte/matrix separation procedure for multi-element trace analysis of steel alloys by means of sector-field ICP-mass spectrometry
Tom Tindemans, Andrew Dobney, Dorine Wambeke and Frank Vanhaecke
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C4JA00073K, Paper

To view these article for free, please register for a free RSC account here

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Variations on isotopic composition of Cu, Fe and Zn in human blood linked with menstruation and age

A graph showing the influence of menstrual blood loss and age on the isotopic composition of Fe in human whole blood

The influence of menstrual blood loss and age on the isotopic composition of Fe in human whole blood

Elements with multiple isotopes have varied isotopic compositions in nature as a result of isotope fractionation. Biomedical applications relying on isotopic analysis have become more popular. Cu, Fe and Zn isotopic analysis in blood has shown potential as a diagnostic tool for a number of diseases. Furthermore, the natural variations of these elements on healthy individuals can provide useful information.

Frank Vanhaecke and colleagues from Ghent University and Ghent University Hospital compared the isotopic values of Cu, Fe and Zn between men, menstruating women and two groups of non-menstruating women, women in their menopause and women with an intra-uterine device (IUD) used for contraception. The results indicated that Cu and Fe isotopic composition of whole blood is affected by menstruation, since the results for both groups of non-menstruating women were significantly different from those of menstruating women and much like those for men. On the other hand, Zn isotopic composition seems to be affected by age, since there was a significant difference between menopausal women and women using the IUD. The authors suggest this difference can be explained by the different hormone levels.

The method used for the isotopic measurements was multi-collector inductively coupled plasma- mass spectrometry (MC-ICP-MS). The method was chosen for its significantly higher sample throughput capacity and also the higher ionisation efficiency for the transition metals investigated.

To read the full article, please access the link below. This paper will be free to read until 1 of May 2014.

The influence of menstrual blood loss and age on the isotopic composition of Cu, Fe and Zn in human whole blood
Lana Van Heghe, Olivier Deltombe, Joris Delanghe, Herman Depypere and   Frank Vanhaecke
J. Anal. At. Spectrom., 2014,29, 478-482
DOI: 10.1039/C3JA50269D

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Added sugars in diet could be evaluated by stable carbon isotope

An image of sugars including glucose and fructoseAdded sugars have been associated with negative effects on health, most important of which are cardiovascular diseases, the leading cause of mortality in the US. They supply around 16% of the total calories in the American diet, up from less than 11% in the late 1970s.  Under-reporting and subjectivity in self-assessment studies of sugar intake have so far prevented conclusive evidence for the relationship between added sugar intake and negative health effects.

A. Hope Jahren and colleagues from the University of Hawaii and the Virginia Tech assessed the potential of δ13C measurements of different biological substrates  for the evaluation of added sugar intake. 78% of added sugars come from C4 plants which differ from other plants on their  δ13C values by as much as 20‰, while the uncertainty in measuring these values is usually less than 0.1‰.

Previous studies suggest that the δ13C value of blood is a promising biomarker for added sugars and sugar-sweetened beverages in medium-term time-frame. Fingerstick-based blood sampling is especially convenient because it is non-invasive and requires minimal equipment and training, while the samples are easy to transport and store. Specific compound approaches are also discussed, with the hemoglobin A1c being a potential biomarker not susceptible to short-term changes in diet.

Although continued research is needed, δ13C is shown to be a promising potential biomarker of added sugar intake.

To read the full article, please access the link below. This paper will be free to read until 11 of April 2014.

The potential for a carbon stable isotope biomarker of dietary sugar intake
A. Hope Jahren, Joshua N. Bostic and Brenda M. Davy
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50339A

 

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HOT articles in JAAS

Take a look at these new HOT articles just published in JAAS. These papers will be free to read for the next 4 weeks. Enjoy! Graphical abstract: A novel approach to understanding the effect of matrix composition on analyte emission in an inductively coupled plasma

Element dependence of enhancement in optics emission from laser-induced plasma under spatial confinement
Changmao Li, Lianbo Guo, Xiangnan He, Zhongqi Hao, Xiangyou Li, Meng Shen, Xiaoyan Zeng and Yongfeng Lu
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50368B, Paper

Assessment of sample preparation methods for the analysis of trace elements in airborne particulate matter
D. Salcedo, J. P. Bernal, O. Pérez-Arvizu and E. Lounejeva
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50375E, Technical Note

Boron speciation in acid digests of metallurgical grade silicon reveals problem for accurate boron quantification by inductively coupled plasma – optical emission spectroscopy
Patrick Galler, Andrea Raab, Sabine Freitag, Kjell Blandhol and Jörg Feldmann
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50383F, Paper Graphical abstract: Element dependence of enhancement in optics emission from laser-induced plasma under spatial confinement

A novel approach to understanding the effect of matrix composition on analyte emission in an inductively coupled plasma
Nicholas Taylor, Kyli N. McKay-Bishop, Ross L. Spencer and Paul B. Farnsworth
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50352F, Paper

Relative spectral response calibration of a spectrometer system for laser induced breakdown spectroscopy using the argon branching ratio method
Xiaohui Li, Benjamin W. Smith and Nicoló Omenetto
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50371B, Paper

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Getting a step ahead of sepsis

Early detection of sepsis followed by immediate intervention is essential in the fight against sepsis. Researchers from the University of Wisconsin – Madison have recently described a technique for the analysis of exhaled breath carbon isotope delta values as a noninvasive diagnostic test in this fight.

Systemic inflammatory response syndrome (SIRS) is a nonspecific response following events such as infection, trauma or surgery. SIRS is a major problem in the care of intensive care patients and has been reported to occur in 82 % of pediatric intensive care patients including the 23 % of patients admitted with sepsis. Sepsis is SIRS in the presence of an infection and is the most common cause of death in infants and children in the world. The US researchers showed a measurable difference between the exhaled breath carbon isotope delta values (BDVs i.e. 13CO2/12CO2 delta value) and the inflammatory acute phase response (APR) state of a pediatric patient. Whether the patient has no infection, trauma or surgery, the patient has trauma or post-operative status, active sepsis or shock.

Schematic representation of fractionation of carbon during the catabolic inflammatory acute phase response to infection

Prof. Butz, University of Wisconsin-Madison highlights that “it has long been known that Carbon-13 behaves differently due to enzymatic fractionation. With the emergence of new carbon isotope sensing devices, such as cavity-ring down spectroscopy, measurement of the stable isotopes of carbon is much cheaper and more portable than has previously been possible.”

1
In addition to discriminating patients for inflammatory APR state, the authors also suggest that the BDV could be used to monitor the changes in physiology during sepsis and septic shock due to changes in macronutrient oxidation. This opens up a bright future for BDVs in the clinic with “The potential for breath based measurements, such as the breath carbon delta value or BDV, making the intriguing case that noninvasive breath sampling can inform doctors and scientists about changes in the body’s metabolism. New instruments are being developed into medical devices that can be placed in the intensive care unit, emergency department, hospital ward, or clinic, and may be used by doctors to make determination about a patients nutritional, metabolic, or health status” adds Butz.

You can download the full article below, which is free to access until March 11th.

Changes in breath carbon isotope composition as a potential biomarker of inflammatory acute phase response in mechanically ventilated pediatric patients
Juan P. Boriosi, Dennis G. Maki, Rhonda A. Yngsdal-Krenz, Ellen R. Wald, Warren P. Porter, Mark E. Cook and Daniel E. Bütz 
J. Anal. At. Spectrom., 2014, Advance Article
DOI: 10.1039/C3JA50331C

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