scholarly journals Compound-specific bromine isotope compositions of one natural and six industrially synthesised organobromine substances

2011 ◽  
Vol 8 (2) ◽  
pp. 127 ◽  
Author(s):  
Daniel Carrizo ◽  
Maria Unger ◽  
Henry Holmstrand ◽  
Per Andersson ◽  
Örjan Gustafsson ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Organic Compounds ◽  
Inductively Coupled Plasma ◽  
Environmental Fate ◽  
Isotope Analysis ◽  
Natural Sample ◽  
Inductively Coupled ◽  
Significant Difference ◽  
Plasma Mass Spectrometry ◽  
Industrial Compounds

Environmental contextBrominated organic compounds of both natural and anthropogenic origin are commonly found in the environment. Bromine has two stable isotopes and the isotopic composition of brominated compounds may vary depending on production pathways and degradation processes. These variations are a result of isotope fractionation effects, when heavy isotopes react slower than lighter isotopes. We apply compound-specific bromine isotope analysis to industrial brominated organic compounds, and one naturally produced analogue, to test the feasibility of the technique to investigate the source and environmental fate of these compounds. AbstractThe stable bromine isotopic composition (δ81Br) was determined for six industrially synthesised brominated organic compounds (BOCs) and one natural BOC by gas-chromatography multi-collector inductively coupled plasma mass spectrometry (GC-mcICP-MS). The δ81Br compositions of brominated benzenes, phenols (both natural and industrial), anisoles, and naphthalenes were constrained with the standard differential measurement approach using as reference a monobromobenzene sample with an independently determined δ81Br value (–0.39‰ v. Standard Mean Ocean Bromide, SMOB). The δ81Br values for the industrial BOCs ranged from –4.3 to –0.4‰. The average δ81Br value for the natural compound (2,4-dibromophenol) was 0.2 ± 1.6‰ (1 s.d.), and for the identical industrial compound (2,4-dibromophenol) –1.1 ± 0.9‰ (1 s.d.), with a statistically significant difference of ~1.4 (P < 0.05). The δ81Br of four out of six industrial compounds was found to be significantly different from that of the natural sample. These novel results establish the bromine isotopic variability among the industrially produced BOCs in relation to a natural sample.

Compound Specific Stable Sulfur Isotope Analysis (δ34S and δ33S) of Organic Compounds Using Gas Chromatography Hyphenated with Multiple Collector Inductively Coupled Plasma Mass Spectrometry (GC-MC-ICPMS)

2020 ◽  
Author(s):  
Kümmel Steffen ◽  
Gelman Faina ◽  
Horst Axel ◽  
Strauß Harald ◽  
Gehre Matthias
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Compounds ◽  
Inductively Coupled Plasma ◽  
Sulfur Isotope ◽  
Sulfur Isotopes ◽  
Isotope Analysis ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Stable Sulfur Isotope

&lt;p&gt;Stable sulfur isotope analysis is potentially applicable in various fields in forensics and environmental analytics to investigate the sources and degradation of organic compounds, many of them being priority pollutants in groundwater and the atmosphere. A broader use of sulfur isotopes of organic compounds in environmental studies is still hampered by the availability of precise and easy-to-use techniques. Here we present a method for the determination of stable sulfur isotope ratios using gas chromatography coupled with multiple-collector inductively coupled plasma mass spectrometry (GC-MC-ICPMS) which can be used for both &amp;#948;&lt;sup&gt;34&lt;/sup&gt;S and &amp;#948;&lt;sup&gt;33&lt;/sup&gt;S analysis. The method was evaluated using the reference materials IAEA-S-1, IAEA-S-2 and IAEA-S-3 which were converted offline to SF&lt;sub&gt;6&lt;/sub&gt; prior to analysis. Standardization was carried out by using a two-point calibration approach. The &amp;#948;&lt;sup&gt;34&lt;/sup&gt;S values obtained by our method are in good agreement (within analytical uncertainty) with the results obtained by the conventional dual inlet method. Additionally, the impact of the used mass resolution (low and medium), the influence of auto-protonation of sulfur isotopes and the effect of isobaric interferences of O&lt;sub&gt;2&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; on the obtained isotopic ratios was investigated. The analytical precision (1&amp;#963;) for &amp;#948;&lt;sup&gt;34&lt;/sup&gt;S and &amp;#948;&lt;sup&gt;33&lt;/sup&gt;S values was usually better than &amp;#177;0.1 &amp;#8240; for analytes containing &gt;0.1 nmol S. Thus, the presented compound-specific online method should be sufficiently precise to address a wide variety of research questions involving mass independent isotope effects of sulfur-containing organic compounds to discriminate sources or biological and chemical reactions in the environment.&lt;/p&gt;

High-precision analysis of potassium isotopes by MC-ICP-MS without collision cell using cool plasma technique in low resolution mode

2021 ◽  
Author(s):  
Hai-Ou Gu ◽  
Sun He
Keyword(s):  
High Precision ◽  
Inductively Coupled Plasma ◽  
Isotope Analysis ◽  
Collision Cell ◽  
Low Resolution ◽  
Inductively Coupled ◽  
Plasma Technique ◽  
Icp Ms ◽  
Cool Plasma ◽  
Plasma Mass Spectrometry

This study presents a method for high-precision stable potassium (K) isotope analysis using Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICPMS) without collision cell in low resolution mode. Cold plasma technique...

Assessment of matrix effects associated with Fe isotope analysis using 266 nm femtosecond and 193 nm nanosecond laser ablation multi-collector inductively coupled plasma mass spectrometry

2018 ◽  
Vol 33 (1) ◽  
pp. 68-83 ◽  
Author(s):  
Xin-Yuan Zheng ◽  
Brian L. Beard ◽  
Clark M. Johnson
Keyword(s):  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Matrix Effects ◽  
Isotope Analysis ◽  
Nanosecond Laser ◽  
Inductively Coupled ◽  
Nanosecond Laser Ablation ◽  
Plasma Mass Spectrometry ◽  
193 Nm

The nature of matrix effects during in situ Fe isotope analysis using fs- and ns-laser ablation (LA) was characterized and compared.

An analytical method for precise determination of the cadmium isotopic composition in plant samples using multiple collector inductively coupled plasma mass spectrometry

2015 ◽  
Vol 7 (6) ◽  
pp. 2479-2487 ◽  
Author(s):  
Rongfei Wei ◽  
Qingjun Guo ◽  
Hanjie Wen ◽  
Junxing Yang ◽  
Marc Peters ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Isotopic Composition ◽  
Analytical Method ◽  
Inductively Coupled Plasma ◽  
Isotope Ratios ◽  
Precise Determination ◽  
Inductively Coupled ◽  
Plant Samples ◽  
Plasma Mass Spectrometry

Three-isotope plots of Cd isotope ratios in plant samples and Cd standard materials are presented in this study.

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