scholarly journals Trace Element Concentrations in Edible Wild Mushroom Samples From Turkey Determined by Atomic Absorption Methods Using Microwave Digestion vs. Wet Ashing

2015 ◽  
Vol 36 (6) ◽  
pp. 266-272
Author(s):  
Durali Mendil
Keyword(s):  
Trace Element ◽  
Atomic Absorption ◽  
Microwave Digestion ◽  
Wild Mushroom ◽  
Element Concentrations ◽  
Wet Ashing

Trace Element Concentrations in Commercially Available Solutions

1976 ◽  
Vol 10 (2) ◽  
pp. 74-76 ◽  
Author(s):  
Richard P. Hoffmann ◽  
Daniel M. Ashby
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Atomic Absorption ◽  
Term Therapy ◽  
Intravenous Hyperalimentation ◽  
Element Concentrations ◽  
Copper And Zinc ◽  
Long Term Therapy

The use of trace-elements in intravenous hyperalimentation solutions has been recommended for long-term therapy. Very little information is available concerning the presence of these nutrients as contaminants in commercially available solutions. In view of this, the concentrations of copper and zinc were measured in twenty solutions by atomic absorption. The results indicate that the amounts present may be significant in certain solutions.

PIXE MEASUREMENT OF THE CADMIUM CONTENT IN ANIMAL TISSUES

1992 ◽  
Vol 02 (03) ◽  
pp. 397-403 ◽  
Author(s):  
LE HUONG QUYNH ◽  
I. DEMETER ◽  
K. HOLLÓS-NAGY ◽  
Z. SZŐKEFALVI-NAGY
Keyword(s):  
Detection Limit ◽  
Atomic Absorption Spectrometry ◽  
Trace Element ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Rabbit Liver ◽  
Cadmium Content ◽  
Animal Tissues ◽  
Element Concentrations ◽  
Thin Samples

PIXE measurements were performed on thin samples prepared from different rabbit liver, kidney, muscle and bone tissues. The trace element concentrations obtained were compared to those measured by atomic absorption spectrometry. The PIXE detection limit for Cd was found to be 0.7 ppm.

scholarly journals Use of Microwave Digestion and Atomic Absorption Spectrophotometry To Determine Chromic Oxide as a Digestibility Marker in Feed, Feces, and Ileal Content

1999 ◽  
Vol 82 (3) ◽  
pp. 575-578 ◽  
Author(s):  
Leticia García-Rico ◽  
Rita E Ramos Ruiz ◽  
Lourdes Gutiérrez Coronado
Keyword(s):  
Atomic Absorption ◽  
Microwave Digestion ◽  
Atomic Absorption Spectrophotometry ◽  
Chromium Concentration ◽  
Heating Cycle ◽  
Digestion Method ◽  
Absorption Spectrophotometry ◽  
Flame Atomic Absorption ◽  
Dry Ashing ◽  
Wet Ashing

Abstract Most conventional digestion procedures, such as dry ashing and wet ashing, are tedious and labor intensive. Microwave digestion is agood alternative, because microwave dissolution is faster, safer, and simpler, and provides more controlled reproducible conditions than conventional methods. The purpose of this study was to develop a microwave digestion method for mineralizing meat and bone meal diets, feces, and ileal contents. Each sample was heated on a hot plate for 10 min, dry ashed at 65°C for 4 h, and transferred into microwave vessels. Then, 10 mL 70% HNO3 was added. Samples were digested for 7,10, and 20 min at 95,90, and 85% power, respectively. After the heating cycle, 6 mL 30% H2O2 was added, and samples were returned to the microwave for a second heating cycle of 1 and 7 min at 95 and 90% power, respectively. Finally, chromium concentration was determined by flame atomic absorption spectrophotometry. The digestion method was validated by using a standard reference material, SRM domestic sludge 2781, with a certified chromium value of 195 ± 9 μg/g. The value obtained in this study was 178 ± 11 μg/g, for a difference of 17 μg/g. Spike recovery experiments resulted in 103.16 and 100.35% recoveries of chromium from diet and feces samples, respectively. Coefficients of variation were 10.8 and 7.8%, respectively.

scholarly journals Annex 1 to: Trace elements mobility in soils from the hydrothermal area of Nisyros (Greece)

2015 ◽  
Vol 57 ◽  
Author(s):  
Kyriaki Daskalopoulou ◽  
Sergio Calabrese ◽  
Silvia Milazzo ◽  
Lorenzo Brusca ◽  
Sergio Bellomo ◽  
...  
Keyword(s):  
Trace Elements ◽  
Chemical Composition ◽  
Trace Element ◽  
Microwave Digestion ◽  
Hydrothermal Activity ◽  
Soil Samples ◽  
Deionized Water ◽  
Title Page ◽  
Field Campaign ◽  
Element Concentrations

<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>Nisyros Island, Greece, is a stratovolcano known for its intense hydrothermal activity. On June 2013, during a multidisciplinary field campaign, soil samples were collected in the caldera area to determinate the main mineralogical assemblages and to investigate the distribution of trace element concentrations and the possible relationship to the contribution of fluids of deep origin. Soil samples were analysed with XRD and for the chemical composition of their leachable (deionized water) and pseudo total (microwave digestion)  [...]</span></p></div></div></div>

Determination of antimony in bottled water and polyethylene terephthalate bottles: a routine laboratory quality check

2013 ◽  
Vol 14 (2) ◽  
pp. 181-188 ◽  
Author(s):  
José Brandão ◽  
Mambo Moyo ◽  
Jonathan Okonkwo
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Polyethylene Terephthalate ◽  
Microwave Digestion ◽  
Absorption Spectrometry ◽  
Bottled Water ◽  
Digestion Method ◽  
Pet Bottles ◽  
Wet Ashing

The paper describes a modified and optimised conventional wet ashing method for the determination of antimony (Sb) in polyethylene terephthalate (PET) bottles used for bottling sparkling and still water. The modified optimum conventional wet ashing method was applied as the digestion method to extract Sb from PET bottles, and the extracted Sb analysed using flame atomic absorption spectrometry (F-AAS), and in bottled water, Sb was analysed with hydride vapour generator atomic absorption spectrometry (HVG-AAS). Microwave digestion method was also used as described above for comparison. The concentrations of Sb obtained using modified optimum conventional wet ashing and microwave digestion protocols were from 169 ± 13 to 285 ± 17 μg g−1 and from 123 ± 0.5 to 249 ± 18 μg g−1, respectively. The average concentration of Sb in bottled water samples using the HVG-AAS was 0.183 ± 0.013 μg L−1, with a range of 0.012 ± 0.001 to 0.358 ± 0.006 μg L−1. Sb concentration increased marginally with longevity of storage, but still remained well below the various guidelines for Sb levels in drinking water.

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