Selenium species determination in foods harvested in Seleniferous soils by HPLC-ICP-MS after enzymatic hydrolysis assisted by pressurization and microwave energy

2018 ◽  
Vol 111 ◽  
pp. 621-630 ◽  
Author(s):  
Jorge Moreda-Piñeiro ◽  
Joel Sánchez-Piñero ◽  
Adriana Mañana-López ◽  
Isabel Turnes-Carou ◽  
Elia Alonso-Rodríguez ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Microwave Energy ◽  
Species Determination ◽  
Selenium Species ◽  
Icp Ms

Multi-element determinations in foods from Amazon region by ICP-MS after enzymatic hydrolysis assisted by pressurisation and microwave energy

2018 ◽  
Vol 137 ◽  
pp. 402-409 ◽  
Author(s):  
Jorge Moreda-Piñeiro ◽  
Joel Sánchez-Piñero ◽  
Adriana Mañana-López ◽  
Isabel Turnes-Carou ◽  
Elia Alonso-Rodríguez ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Microwave Energy ◽  
Amazon Region ◽  
Icp Ms

Characterization of Selenium Species in Brazil Nuts by HPLC−ICP-MS and ES-MS

2002 ◽  
Vol 50 (20) ◽  
pp. 5722-5728 ◽  
Author(s):  
Anne P. Vonderheide ◽  
Kazimierz Wrobel ◽  
Sasi S. Kannamkumarath ◽  
Clayton B'Hymer ◽  
Maria Montes-Bayón ◽  
...  
Keyword(s):  
Selenium Species ◽  
Brazil Nuts ◽  
Icp Ms

Acceleration of enzymatic hydrolysis of protein-bound selenium by focused microwave energy

2008 ◽  
Vol 23 (4) ◽  
pp. 487 ◽  
Author(s):  
Emma Peachey ◽  
Neil McCarthy ◽  
Heidi Goenaga-Infante
Keyword(s):  
Enzymatic Hydrolysis ◽  
Microwave Energy ◽  
Hydrolysis Of

scholarly journals Methodological aspects concerning sampling and determination of total selenium and selenium species in geothermal waters

2020 ◽  
Vol 18 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Piotr Rusiniak ◽  
Anna Ruszczyńska ◽  
Katarzyna Wątor ◽  
Ewa Bulska ◽  
Ewa Kmiecik
Keyword(s):  
Limit Of Detection ◽  
Selenium Concentration ◽  
Geothermal Water ◽  
Limit Of Quantification ◽  
Geothermal Waters ◽  
Selenium Species ◽  
Icp Ms ◽  
Significant Difference ◽  
Total Selenium

AbstractThe work presents the results of geothermal water sample analysis with respect to the determination of total selenium concentration. For this purpose, geothermal water (GT) samples were collected from three different intakes (GT-1, GT-2, GT-3) with similar temperatures of about 85°C. Tests were carried out to see if the methodology of sample preparation influenced total selenium concentration during analysis by inductively coupled plasma mass spectrometry (ICP-MS). Samples (raw and filtered) were preserved with nitric acid (HNO3) and mineralised in the laboratory. From the data obtained it was found that there is no significant difference between total selenium concentration in raw and filtered samples. Following mineralisation, the concentrations in the samples were below the limit of detection or limit of quantification. While different analytical steps or procedures are applied, the results of total selenium concentration can vary. Furthermore, high-performance liquid chromatography coupled with ICP-MS was used for the identification of selenium species. The results revealed that hexavalent selenium – Se(VI) – in the geothermal water was found only in samples collected from the GT-2 and GT-3 intakes.

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