scholarly journals Variation of mineralogical compositions in sequential extraction procedure adapted to geochemical reference materials (sediment series).

2014 ◽  
Vol 65 (3-4) ◽  
pp. 23-36 ◽  
Author(s):  
Atsuyuki Ohta ◽  
Ran Kubota ◽  
Takashi Okai
Keyword(s):  
Sequential Extraction ◽  
Reference Materials ◽  
Extraction Procedure ◽  
Sequential Extraction Procedure ◽  
Geochemical Reference Materials ◽  
Mineralogical Compositions

Thallium fractionation in polluted environmental samples using a modified BCR three-step sequential extraction procedure and its determination by electrothermal atomic absorption spectrometry

2008 ◽  
Vol 62 (2) ◽  
Author(s):  
Ján Medved’ ◽  
Milan Kališ ◽  
Ingrid Hagarová ◽  
Peter Matúš ◽  
Marek Bujdoš ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Reference Materials ◽  
Environmental Samples ◽  
Limit Of Detection ◽  
Certified Reference Materials ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Extraction Procedure ◽  
Sequential Extraction Procedure ◽  
Residual Fraction

AbstractDetermination of thallium in polluted environmental samples and their extracts obtained by a modified BCR three-step sequential extraction procedure was used to study thallium distribution and mobility in the monitored polluted area affected by acidification (Šobov, Central Slovakia). The results of fractionation applied to 5 soil certified reference materials and 14 environmental samples show that the vast majority of thallium occurred in the residual fraction. This means that highly toxic thallium is strongly entrapped in the parent rock materials remains immobile and its environmental toxicity is therefore reduced. The limit of detection for thallium in the studied fractions was lower than 0.050 mg kg−1, the precision (RSD) of the ultratrace determination of thallium in the studied fractions was better than 17 % and the accuracy of the used method was verified by analyzing certified reference materials.

scholarly journals Sequential extraction procedure to obtain the composition of terrigenous detritus in marine sediments

MethodsX ◽  
2020 ◽  
Vol 7 ◽  
pp. 100888
Author(s):  
Margit H. Simon ◽  
Daniel P. Babin ◽  
Steven L. Goldstein ◽  
Merry Yue Cai ◽  
Tanzhuo Liu ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Marine Sediments ◽  
Extraction Procedure ◽  
Sequential Extraction Procedure
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