Application of GC–HRMS and GC×GC–TOFMS To Aid in the Understanding of a Dioxin Assay’s Performance for Soil and Sediment Samples

2011 ◽  
Vol 45 (24) ◽  
pp. 10501-10508 ◽  
Author(s):  
Amy Dindal ◽  
Elizabeth Thompson ◽  
Erich Strozier ◽  
Stephen Billets
Keyword(s):  
Sediment Samples ◽  
Soil And Sediment

Instrumental neutron activation analysis of soil and sediment samples from Siwa Oasis, Egypt

2015 ◽  
Vol 12 (4) ◽  
pp. 637-644 ◽  
Author(s):  
Wael M. Badawy ◽  
Khaled Ali ◽  
Hussein M. El-Samman ◽  
Marina V. Frontasyeva ◽  
Svetlana F. Gundorina ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Sediment Samples ◽  
Instrumental Neutron Activation ◽  
Soil And Sediment

Residue Analysis of Benzobicyclon in Soil and Sediment Samples by Ultra High-Performance Liquid Chromatography-Tandem Mass Spectrometry

2016 ◽  
Vol 99 (6) ◽  
pp. 1628-1635 ◽  
Author(s):  
Qianqian Sun ◽  
Yihu Wang ◽  
Chunxia Tian ◽  
Wenjun Gui ◽  
Yirong Guo ◽  
...  
Keyword(s):  
High Performance ◽  
Multiple Reaction Monitoring ◽  
Residue Analysis ◽  
Environmental Safety ◽  
Reaction Monitoring ◽  
Sediment Samples ◽  
Chromatography Tandem Mass Spectrometry ◽  
Sample Test ◽  
Liquid Chromatography Tandem Mass ◽  
Soil And Sediment

Abstract A reliable and rapid method was developed to determine benzobicyclon residue in different soil and sediment samples. After extraction via a modified quick, easy, cheap, effective, rugged, and safe method, samples were purified by SPE cleanup with HLB cartridges. Quantitative determination was performed by ultra-HPLC (UPLC)-tandem MS (MS/MS) in electrospray positive ionization and multiple reaction monitoring modes. When samples were fortified at concentrations of 5, 50, and 500 µg/L, recoveries of 80.2 to 114.5% were obtained, with the repeatability (intraday RSDr) and reproducibility (interday RSDR) <14.1 and <21.4%, respectively. The instrumental LODs and LOQs for matrix-matched standards and the method LOQs for sample test were 0.19–1.34 μg/L, 0.64–4.48 μg/L, and 0.32–2.24 μg/kg, respectively. The linear range was 5–1000 μg/L (R2 > 0.99). The established UPLC-MS/MS method was applied in the detection of benzobicyclon in real soil samples, which were collected during the supervised field trial. Results showed that the maximum concentration of benzobicyclon in the soil was 4.87 mg/kg and its degradation half-life (t0.5) was 6.7 days. Generally, the proposed method could be an effective tool for controlling and monitoring the risks posed by benzobicyclon to human health and environmental safety.

Development of an immunoassay and a sol–gel-based immunoaffinity cleanup method for coplanar polychlorinated biphenyls from soil and sediment samples

2010 ◽  
Vol 675 (2) ◽  
pp. 138-147 ◽  
Author(s):  
Miriam Altstein ◽  
Orna Ben Aziz ◽  
Nir Skalka ◽  
Alisa Bronshtein ◽  
Jane C. Chuang ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Sol Gel ◽  
Sediment Samples ◽  
Coplanar Polychlorinated Biphenyls ◽  
Soil And Sediment

An inter-laboratory comparison of different analytical methods for the determination of monomethylmercury in various soil and sediment samples: A platform for method improvement

Chemosphere ◽  
2017 ◽  
Vol 169 ◽  
pp. 32-39 ◽  
Author(s):  
Hitoshi Kodamatani ◽  
Steven J. Balogh ◽  
Yabing H. Nollet ◽  
Akito Matsuyama ◽  
Vesna Fajon ◽  
...  
Keyword(s):  
Analytical Methods ◽  
Sediment Samples ◽  
Method Improvement ◽  
Soil And Sediment

Quantifying and characterising organic carbon in newly-developed soils following glacier retreat in northern latitudes

2020 ◽  
Author(s):  
Saule Akhmetkaliyeva ◽  
Robert Sparkes ◽  
Leon Clarke ◽  
Andrew Dean ◽  
Simon Cook
Keyword(s):  
Organic Carbon ◽  
Dna Sequencing ◽  
Soil Development ◽  
Glacier Retreat ◽  
The Arctic ◽  
Glacial Meltwater ◽  
Fluvial Sediment ◽  
Sediment Samples ◽  
Glacier Front ◽  
Soil And Sediment

<p>Arctic and sub-arctic regions contain a globally significant reservoir of easily degradable glacial organic carbon (GOC) held within glacier ice, subglacial sediments, and proglacial sediments and soils. 21st century warming will result in global glacier retreat with the potential to expose and release GOC, degradation of which can produce CO<sub>2</sub> and/or CH<sub>4</sub> through physical, chemical or biological processes. Newly-exposed nutrient rich glacial landscapes may develop soils and ecosystems. However, current understanding of the nature of glacial carbon cycling is very weak. In this study, sources and transformations of organic carbon (OC) within proglacial environments were determined using a combination of organic biomarkers, DNA sequencing and elemental concentrations.</p><p>Soil development was characterised in three contrasting glacial systems (Oræfajökull ice cap in Iceland, Tarfala in Sweden and Zackenberg in Greenland) in order to understand the main source of OC in soils exposed after glacier retreat and soil development along downstream transects from the glacier front. Water, soil and sediment samples were collected during four successful field campaigns (Iceland and Sweden in summer 2018, Greenland and Iceland in summer 2019). Soil and sediment samples were analysed for organic carbon and nitrogen concentrations, bacteriohopanepolyol biomarkers (BHPs), a group of membrane lipids that can be used to trace major microbial groups, DNA sequencing and major elements (using ICP-OES and IC).  </p><p>Soil samples from moraines showed highest OC concentrations (up to 5.5% in Iceland), while fluvial sediment samples from all study areas had low to no OC. BHPs were rare in fluvial sediments, observed in riverbank soils and most common in moraines. Both total BHP concentration and R’soil index (up to 50.5 µg/g ΣBHPs in a Little Ice Age and 0.41 R’soil in a 2500-year-old Icelandic moraines) show development of soils over time along the downstream transect from the glacier front. DNA concentrations in soil extracts are much higher than fluvial sediment samples. Particulate OC concentration in glacial meltwater streams and proglacial lakes was low (up to 0.03 mg/L), perhaps due to the high total suspended sediment concentrations (up to 0.96 mg/L) in most of the streams. Water chemistry analyses showed significant Ca, S, Na, Fe, Mg and Al concentrations, that potentially would fertilise the Arctic Ocean.</p><p>Based on these preliminary data, it can be concluded that direct glacial output of organic carbon is low, but soil and ecosystem development in front of retreating glaciers leads to the build-up of new terrestrial OC stores. Erosion of OC from these pro-glacial landscapes by glacial meltwater might highly affect estimates of GOC. Future glacier retreat in deglaciating systems in the Arctic (Greenland and Sweden) and sub-arctic (Iceland) regions might increase terrestrial OC productivity and carbon export, as well as seeding biological production downstream.</p>

Application of Novel Praseodymium (III) PVC‐Membrane Electrode for Determination of Pr(III) Ions in Soil and Sediment Samples

2008 ◽  
Vol 41 (5) ◽  
pp. 902-916 ◽  
Author(s):  
Hassan Ali Zamani ◽  
Mohammad Reza Ganjali ◽  
Parviz Norouzi ◽  
Soraia Meghdadi
Keyword(s):  
Pvc Membrane ◽  
Membrane Electrode ◽  
Sediment Samples ◽  
Pvc Membrane Electrode ◽  
Soil And Sediment
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