Ultrasound assisted pseudo-digestion for determination of iron and manganese in citric acid fermentation mediums by electrothermal atomic absorption spectroscopy

• Authors: Alireza Pourhossein , Masoud Madani , Mohsen Shahlaei , Kambiz Fakhri , Parisa Alimohamadi , Maryam Amiri
• Languages of publication: EN

Abstracts

EN

A sensitive, simple and rapid method for ultra-trace determination of iron and manganese based on ultrasound assisted pseudodigestion in citric acid fermentation medium samples (beet and cane molasses and raw sugar based mediums) is described. Parameters influencing pseudo-digestion, such as sonication time, sample mass and solvent system were fully optimized. Final solutions obtained upon sonication were analyzed by electrothermal atomic absorption spectrometry (ETAAS). The best conditions for metal pseudo-digestion were as follows: a 25, 30 and 20 min sonication time for beet molasses, cane molasses and raw sugar based medium samples, respectively, 0.7 g sample mass of raw sugar based samples, 0.5 g sample mass of molasses based samples and an extraction mixture of concentrated HNO3-H2O2, in 25 mL of solvent. Analytical results obtained for the two metals by ultrasound assisted pseudo-digestion and conventional wet digestion methods showed a good agreement. This method reduces the time required for all treatments (heating to dryness, cooling and separation) in comparison with conventional wet digestion method. The accuracy of the method was tested by comparing the obtained results with that of conventional wet digestion method. [...]

Keywords

EN

Ultrasound assisted-digestion; Iron; Manganese; ETAAS; Citric acid fermentation mediums

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2009
• Volume: 7
• Issue: 3
• Pages: 382-387

Dates

published

1 - 9 - 2009

online

21 - 6 - 2009

Contributors

author

Alireza Pourhossein

• Research and Development Center, Kimia Gharb Gostar Industrial Company, 17136-94881, Kermanshah, Iran

author

Masoud Madani

author

Mohsen Shahlaei

author

Kambiz Fakhri

• Research and Development Center, Kimia Gharb Gostar Industrial Company, 17136-94881, Kermanshah, Iran

author

Parisa Alimohamadi

• Research and Development Center, Kimia Gharb Gostar Industrial Company, 17136-94881, Kermanshah, Iran

author

Maryam Amiri

• Research and Development Center, Kimia Gharb Gostar Industrial Company, 17136-94881, Kermanshah, Iran

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Identifiers

DOI

10.2478/s11532-009-0020-4