Dynamic studies on the mobility of trace elements in soil and sediment samples influenced by dumping of residues of the flood in the Mulde River region in 2002

Active stream sediments generally consist of broken-down fragments of pre-existing rocks by the action of river (stream) flow. This makes them target materials for routine geochemical surveys and provenance analysis. Fifteen (15) stream sediment samples were collected in some parts of Bula and its environs, northeastern Nigeria, in order to determine their textural characteristics, heavy mineral and elemental composition. The sediments were subjected to granulometric, heavy mineral and elemental analyses. The result of granulometric analysis show that the streamsediments are poorly to moderately well sorted, very platykurtic to leptokurtic, fine to medium grained and positively skewed. Zircon, rutile and tourmaline are the dominant heavy mineral species occurring in the sediments. The computed Zircon-Tourmaline-Rutile (ZTR) index values for the samples range from 59.18 - 83.53, indicating mineralogical maturity. The geochemical data of the stream sediment samples show that the mean contents of the trace elements [Ti (0.73 ± 0.74%), Fe (0.39±0.19%), Cr (816±639ppm), Ni (258±108ppm), Pb (48±12.37ppm) and Zn (502±126ppm)] were higher than their respective average crustal values except for Fe. Computed threshold values indicate possible mineralization containing Fe and Ti. The elements have variable spatial distribution. The study shows that the trace elements composition of the stream sediments is majorly lithogenic. Because mineralization in rocks and sediments are often characterized by considerable variation in their trace elements contents, the metal concentrations in these sediments are large enough for Ilmenite and Rutile mineralization to be suspected within the study area.

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Stream-sediment samples reanalyzed for major, rare earth, and trace elements from seven 1:250,000-scale quadrangles, south-central Alaska, 2007-09

Data Series ◽

10.3133/ds532 ◽

2010 ◽

Author(s):

Bruce M. Gamble ◽

Elizabeth A. Bailey ◽

Nora B. Shew ◽

Keith A. Labay ◽

Jeanine M. Schmidt ◽

...

Keyword(s):

Trace Elements ◽

Rare Earth ◽

Stream Sediment ◽

Sediment Samples ◽

South Central

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Determination of Alpha-Emitting Nuclides of Thorium and Uranium in Soil and Sediment Samples

Studies in Environmental Science - Chemistry for Protection of the Environment 1987, Proceedings of the Sixth International Conference ◽

10.1016/s0166-1116(08)71285-8 ◽

1988 ◽

pp. 131-139 ◽

Cited By ~ 2

Author(s):

P. Spezzano ◽

N. Silvestri

Keyword(s):

Sediment Samples ◽

Soil And Sediment

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The heavy metals/trace elements contents of sediments from Owalla Reservoir, Osun State, Southwest Nigeria

Advances in Oceanography and Limnology ◽

10.4081/aiol.2018.7576 ◽

2018 ◽

Vol 9 (2) ◽

Author(s):

Adedeji Idowu Aduwo ◽

Israel Funso Adeniyi

Keyword(s):

Heavy Metals ◽

Trace Elements ◽

Open Water ◽

Annual Cycles ◽

Sediment Samples ◽

Littoral Region ◽

Water Region ◽

Southwest Nigeria ◽

Definite Pattern ◽

Horizontal Variations

The heavy metals/trace elements contents of sediment samples from Owalla Reservoir were analyzed every three months in two annual cycles (March 2011 – February 2013). The main aim was to measure concentrations of selected elements in sediment samples, their variations in space and seasons and the level of pollution and/or contamination. The bottom sediment samples were collected with a Van Veen Grab and the elemental analysis in the laboratory was based on air-dried samples following standard methods. The overall hierarchy of heavy metals/trace elements in the sediments of the reservoir was in the decreasing order of concentrations: Fe > Mn > As > Zn > Ni > Co > Cr > Cu > Pb > Cd. The concentrations of the heavy metals did not follow any definite pattern from the upstream-downstream basin, although most of them (Cu, Fe, Mn, Zn, and Co) showed significant differences (P<0.05) in their horizontal variations. Mn, Pb, Co, Fe, Ni, and Zn were significantly (P<0.05) higher at the open water region than in the littoral region. All the elements except Ni did not show significant seasonal variations (P>0.05). Most of the elements in the reservoir sediment have concentrations within the background levels and concentrations defined in environmental regulations and guidelines, except for As and Cd. The contamination factors (Cf) for most metals (Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) suggested low contamination in the sediments (Cf < 1.0). Conversely, the sediments were moderately contaminated with Cd (Cf = 2.41) and very highly contaminated with As (Cf = 19.33).

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

Journal of AOAC International ◽

10.5740/jaoacint.16-0159 ◽

2016 ◽

Vol 99 (6) ◽

pp. 1628-1635 ◽

Cited By ~ 1

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.

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