A partially mechanized system for the combustion of organic samples in a stream of oxygen with quantitative recovery of the trace elements

Knapp, Günter; Raptis, S.; Kaiser, G.; Tölg, G.; Schramel, P.; Schreiber, B.

doi:10.1007/bf00469435

Cited by 64 publications

(14 citation statements)

References 6 publications

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“…Obviously, the dynamic system "TRACE-O-MAT" [19] can also be used for the digestion of the organic material. But this system is not so widely used in practice.…”

Section: Preparation Of the Sample Solutionsmentioning

confidence: 99%

Iodine determination in biological materials by ICP-MS

Schramel

Hasse

1994

Mikrochim Acta

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Abstract. The present work describes an analytical procedure for the determination of the total iodine content in biological materials (serum, milk, plants, tissues etc.). Liquid samples can be directly analyzed after dilution, if necessary, by ICP-MS. Milk powder, plants and tissues were dissolved by using a modified simple SchSninger combustion, subsequently the residue was taken up in 0.1 mol/1 NaOH and this solution was analyzed by ICP-MS. The detection limit is in the range of 0.01 #g/1. The method was tested using different CRMs certified for the iodine content.

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“…Obviously, the dynamic system "TRACE-O-MAT" [19] can also be used for the digestion of the organic material. But this system is not so widely used in practice.…”

Section: Preparation Of the Sample Solutionsmentioning

confidence: 99%

Iodine determination in biological materials by ICP-MS

Schramel

Hasse

1994

Mikrochim Acta

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“…[28][29][30][31] Infrared radiation (1.2x10 -14 to 6.0x10 -12 Hz) causes an increase in molecular vibration and variation in molecular rotation, generating heat and also its propagation.…”

Section: Wet Decomposition-radiant Energy-infrared Radiationmentioning

confidence: 99%

“…After applying 10 V during 120 to 180 s, 1 mL of hydrogen peroxide is then added, followed by application of 10 V for 60 s. Analytes are analyzed directly in the same tube, avoiding contamination of the solution. 31 Other applications are, for example, the heating of liquid and solid samples for determination of volatile analytes, 28 and for the preparation of sub-boiling acids. 32 …”

Section: Wet Decomposition-radiant Energy-infrared Radiationmentioning

confidence: 99%

“…The details have been described. 6,7,28,37 The heating program can control pressure vs. time or temperature vs. time or power vs. time. It should be emphasized that the temperature to be used should be based on the boiling point of the acid or mixture used, as shown in Table 6.…”

Section: Wet Decomposition-radiant Energy-microwave Radiationmentioning

confidence: 99%

“…Examples are presented in the literature. [4][5][6][7]28,[35][36][37] The advantages of using microwave ovens are the security of the commercially available equipment, the short time required for decomposition (minutes) and the accuracy of the results, as a consequence of minimal contamination from the environment and from reagents (lesser amounts are required), with no loss of volatile elements. 4 Microwave assisted flow digestion can be performed in continuous flow systems, stopped flow systems, ambient pressure systems or pressurized systems; several examples have been presented in the literature.…”

Section: Wet Decomposition-radiant Energy-microwave Radiationmentioning

confidence: 99%

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Sample preparation for atomic spectroscopy: evolution and future trends

Oliveira¹

2003

J. Braz. Chem. Soc.

140

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A preparação da amostra é a etapa crítica dentro de um protocolo analítico e envolve desde a simples diluição até a solubilização parcial ou total. Métodos de decomposição por via seca ou úmida, envolvendo o aquecimento das amostras em sistemas abertos ou fechados, utilizando várias formas de energia como térmica, ultra-som ou radiante (infravermelho, ultravioleta e microondas) são empregados. O presente e o futuro da preparação de amostras consideram também solubilização em linha de amostras, lixiviação dos analitos de interesse, especiação, análise de suspensão, análise in situ, in vivo etc. Ênfase foi dada para o preparo de amostras para espectroscopia atômica. Atualmente, os objetivos a serem alcançados envolvem a obtenção do melhor resultado, no menor tempo, com mínima contaminação, pouco gasto de reagente e pequena geração de resíduos e efluentes, bem como a integridade das amostras e traceabilidade dos resultados, tendo em mente a qualidade e confiança nos resultados de medições, como requerido pela comunidade e usuários.Sample preparation is the critical step of any analytical protocol, and involves steps from simple dilution to partial or total dissolution. The methods include dry or wet decomposition of the samples in open or closed systems, using thermal, ultrasonic or radiant (infrared, ultraviolet and microwaves) energy. This review emphasizes sample preparation for atomic spectroscopy. The present and future tendencies for sample preparation also involve on-line dissolution, extraction of the analytes, speciation, solid sample and slurry analysis, in situ and in vivo procedures, etc. Nowadays the goals are the best result, in the shortest time, with minimum contamination, using the smallest quantities of reagents and samples, and having low residue and waste generation, as well as maintaining the integrity of the sample and the traceability of the results, to have quality and confidence in the measurements as the primordial attributes required by the community and by the users.

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Systematic errors in trace analysis

Tölg¹,

Tschöpel²

1994

Determination of Trace Elements

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A partially mechanized system for the combustion of organic samples in a stream of oxygen with quantitative recovery of the trace elements

Cited by 64 publications

References 6 publications

Iodine determination in biological materials by ICP-MS

Iodine determination in biological materials by ICP-MS

Sample preparation for atomic spectroscopy: evolution and future trends

Systematic errors in trace analysis

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