Ultrasonic extraction as a sample preparation technique for elemental analysis by atomic spectrometry

Ashley, Kevin; Andrews, Ronnee N.; Cavazos, Laura; Demange, Martine

doi:10.1039/b102027g

Cited by 126 publications

(53 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An ultrasound extraction method for elemental analysis by atomic spectrometry was recently proposed by Ashley et al 11 Selected standard reference materials were subjected to ultrasound extraction in different acid solutions [25% v v -1 HNO 3 , 25% v v -1 HNO 3 /HCl or concentrated HNO 3 / HCl (1:1)]. Good recoveries (>80%) were achieved when concentrated HNO 3 /HCl was used for As, Cd, Cu, Mn, Pb and Zn.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-assisted extraction of Ca, K and Mg from in vitro citrus culture

Arruda¹,

Rodriguez²,

Arruda³

2003

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Apresenta-se um procedimento para extração de Ca, K e Mg de amostras de cultivo in vitro de plantas, comparando-se culturas de calo com diferentes potenciais embriogênicos de Citrus sinensis e Citrus limonia, com o emprego de energia ultra-som. Foram investigados os parâmetros relacionados com a extração de metais, tais como tipo de amostragem do material, concentração do ácido e tempo de sonicação. Visando a comprovação da exatidão, o procedimento de extração ultra-sônica foi comparado com o de digestão ácida assistida por microondas, e não foram observadas diferenças estatísticas significativas em um nível de confiança de 95%. Com este procedimento de extração simples e preciso, foi possível estabelecer diferenças nas concentrações de Ca, K e Mg durante a formação/desenvolvimento dos embriões de Citrus, bem como entre as culturas (embriogênicas e não-embriogênicas). Finalmente, a extração ultra-sônica demonstrou-se uma excelente alternativa para menor manipulação das amostras e redução de custos operacionais.An ultrasound extraction procedure for Ca, K and Mg from in vitro plant cultures is proposed, comparing cultures of different embryogenic levels of Citrus sinensis and Citrus limonia, employing ultrasound energy. Parameters related to metals extraction, such as plant material sampling, acid concentration and sonication time were investigated. For accuracy check, the proposed ultrasound extraction procedure was compared with a microwave-assisted digestion procedure and no differences in the results were verified at 95% of the confidence level. With this simple and accurate extraction procedure, it was possible to determine differences in Ca, K and Mg concentrations during Citrus embryo formation/development and between cultures (embryogenic and non-embryogenic). Finally, the ultrasound extraction method demonstrated to be an excellent alternative for handless sampling and operational costs. Keywords: ultrasound extraction, FAAS, FAES, Ca, K and Mg determination IntroductionClassical sample preparation methods commonly used for biological studies are those based on dry or wet decomposition, 1,2 which, in general, require intensive sample handling and time/reagent consumption. In this context, the use of ultrasound can be an excellent alternative to minimize sample preparation [3][4][5] and to avoid solvent extraction, 6,7 because its energy facilitates and accelerates some analytical steps, permitting less time consumption and decreasing the cost per analysis. Besides these characteristics, accuracy, precision, and handless manipulation can be achieved when ultrasound-assisted extraction methods are used. 4 As an example, the application of ultrasound as an auxiliary energy source for solid sample treatment was made by Luque de Castro and Silva. 8 The authors emphasized different applications of ultrasound mainly related to sample treatment of agricultural, biological and environmental samples. Carvalho et al. 9 pointed out the sonochemical degradation that occurs inside extracted solutions when using the ...

show abstract

Section: Introductionmentioning

confidence: 99%

Ultrasound-assisted extraction of Ca, K and Mg from in vitro citrus culture

Arruda¹,

Rodriguez²,

Arruda³

2003

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…The results are compared with those of the previous NIST study. 28 Table 13. Analysis of variance on the log lead recovery for the ultrasonic extraction 30 Table 14.…”

mentioning

confidence: 99%

Factors affecting ultrasonic extraction of lead from laboratory-prepared household paint films

Rossiter¹,

Toman²,

McKnight³

et al. 2002

View full text Add to dashboard Cite

In a previous National Institute of Standards and Technology (NIST) study on the reliability of ultrasonic extraction-anodic stripping voltammetry (UE/ASV) for quantitatively determining lead in paint films, it was found that the amount of lead was often considerably less than the known lead levels of the specimens. An important contributor appeared to be incomplete lead solubilization during ultrasonication. This report presents the results of a follow-up study performed to examine factors affecting ultrasonic extraction of lead from laboratory-prepared paint films that had been characterized using common analytical methods. The current study had three phases. In Phase I, five experimental variables-sonicator power, specimen mass, specimen panicle size, sonication temperature, and sonication time-were systematically examined in a controlled two-level experiment. Three significant main effects -particle size, temperature, and time-were identified. Two significant two-way interactions -particle size with temperature and particle size with time-were also observed. No three-way interactions were found. The effect of particle size was strong. When the particle size was small (<

show abstract

“…Compared with the traditional sample preparation methods and even microwave oven treatment, the employment of room temperature and atmospheric pressure methods makes the ultrasound-assisted (US-assisted) procedures simpler and safer for the analyst. Ultrasound-assisted extractions of metals from environmental [5][6][7][8][9][10], biological [11][12][13], and food [14,15] samples have been successfully performed using ultrasonic baths. Remarkable increases of efficiency and consequent reductions of time were obtained for US-assisted extractions employing ultrasonic horns [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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

Pourhossein¹,

Madani²,

Shahlaei³

et al. 2009

Open Chemistry

View full text Add to dashboard Cite

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 HNO 3 -H 2 O 2 , 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.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

show abstract

Ultrasonic extraction as a sample preparation technique for elemental analysis by atomic spectrometry

Cited by 126 publications

References 40 publications

Ultrasound-assisted extraction of Ca, K and Mg from in vitro citrus culture

Ultrasound-assisted extraction of Ca, K and Mg from in vitro citrus culture

Factors affecting ultrasonic extraction of lead from laboratory-prepared household paint films

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

Contact Info

Product

Resources

About