Dried biomass of green algae and its matrix matching with green parts of higher plants

Mäder, P.; Stejskalová, I.; Slámová, Alžběta

doi:10.1007/bf00322312

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…The material, after spray drying, proved to be extremely fine grained with a mean particle size around 3.5 µm with a narrow range of 95% from 2 to 12 µm ( Fig. 1) [5,10,11,12].…”

Section: Methodsmentioning

confidence: 98%

Assessment of element-specific homogeneity in reference materials using microanalytical techniques

Roßbach

Zeiller

2003

Analytical and Bioanalytical Chemistry

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The IAEA established in 1994 a co-ordinated research programme (CRP) on "Reference Materials for Microanalytical Nuclear Techniques" as part of its efforts to promote and strengthen the use of nuclear analytical technologies in member states with the specific aim of improving the quality of analysis of nuclear, environmental, and biological materials. The objectives of this initiative were: to identify suitable biological reference materials which could serve the needs for quality control in microanalytical techniques; to evaluate existing CRMs for use in microanalytical investigations; to evaluate appropriate sample pretreatment procedures for materials being used for analysis with microanalytical techniques; to identify analytical techniques which can be used for characterisation of homogeneity determination, and to apply such techniques to the characterization of candidate reference materials for use with microanalytical techniques. The CRP lasted for 4 years and seven laboratories and the Agency's Laboratories in Seibersdorf participated. A number of materials including the candidate reference materials IAEA 338 (lichen) and IAEA 413 (single cell algae, elevated level) were evaluated for the distribution of elements such as Cl, K, Ca, Cr, Mn, Fe, Zn, As, Br, Rb, Cd, Hg, and Pb. The results obtained during this CRP suggest that: each element exhibits its characteristic distribution in a matrix described by the "Ingamels' sampling constant" or the "relative homogeneity factor" of Kurfuerst; both concepts are valid over a large range of sample mass used for analysis (from 0.1 microg to around 100 mg); and materials being characterised quantitatively for element homogeneity could be used for the experimental determination of total uncertainty of other analytical techniques. As far as we are aware this is the first time the concept of quantitative characterisation of homogeneity has been applied to potential reference materials and the first demonstration of the feasibility and usefulness of the concept with particular emphasis on enhancing quality control opportunities for microanalytical techniques.

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“…The material, after spray drying, proved to be extremely fine grained with a mean particle size around 3.5 µm with a narrow range of 95% from 2 to 12 µm ( Fig. 1) [5,10,11,12].…”

Section: Methodsmentioning

confidence: 98%

Assessment of element-specific homogeneity in reference materials using microanalytical techniques

Roßbach

Zeiller

2003

Analytical and Bioanalytical Chemistry

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show abstract

“…grown in cultivation media with different concentration levels of a number of environmentally relevant elements were produced at the Czech University of Agriculture, Prague, in large amounts. 4 After harvesting 30-50 kg of fresh material with elevated, environmental and low levels of trace elements, the materials were air sprayed for drying. Without further grinding, the materials with elevated levels (IAEA-393) and the material with environmental levels (IAEA-392) were distributed among the participating laboratories of the first IAEA-AQCS meeting on 'Reference materials for micro-analytical nuclear techniques' held in Zagreb, Croatia, in December 1994.…”

Section: Methodsmentioning

confidence: 99%

Micro-homogeneity of Candidate Reference Materials Characterized by Particle Size and Homogeneity Factor Determination

Sonntag¹,

Roßbach²

1997

Analyst

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Determination of 36 elements in plant reference materials with different Si contents by inductively coupled plasma mass spectrometry: Comparison of microwave digestions assisted by three types of digestion mixtures

Sucharová

Suchara

2006

Analytica Chimica Acta

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Dried biomass of green algae and its matrix matching with green parts of higher plants

Cited by 4 publications

References 11 publications

Assessment of element-specific homogeneity in reference materials using microanalytical techniques

Assessment of element-specific homogeneity in reference materials using microanalytical techniques

Micro-homogeneity of Candidate Reference Materials Characterized by Particle Size and Homogeneity Factor Determination

Determination of 36 elements in plant reference materials with different Si contents by inductively coupled plasma mass spectrometry: Comparison of microwave digestions assisted by three types of digestion mixtures

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