BIBLIOS

Tipo
Artigos em Revista

Tipo de Documento
Artigo Completo

Título
Preparation of a lichen reference material

Participantes na publicação
M. C. Freitas (Author)
F. M. Catarino (Author)
C. Branquinho (Author)
Dep. Biologia Vegetal
Dep. Biologia Vegetal
cE3c
cE3c
C. Maguas (Author)

Resumo
For preparation of a multielement lichen reference material for environmental studies, 25 kg of the epyphitic lichen Evernia prunastri (L.) Ach. was collected in unpolluted regions of Portugal. The lichen was removed from Cistus ladanifer and Quercus spp. The material was ground to a mesh size ≤125 μm. The material homogeneity was evaluated by determining Na, K, Mn, Br, As, La and Sm on two samples of 100 mg taken at each of 20 locations of the bulk material; the locations were randomly chosen. The k0-based INAA was used. The material is homogeneous for fractions ≥100 mg, as shown by the evaluation of the heterogeneity of the subsampling operation in the 20 locations and by the results of a one-way analysis of variance for the data obtained. The composition of Evernia prunastri varies neither with the region where it grows nor with the date of collection. This work was accomplished under contract with the IAEA.


Suporte
Journal of Radioanalytical and Nuclear Chemistry Articles

Identificadores da Publicação
ISSN - 0236-5731
eISSN - 1588-2780

Editora
Springer Science and Business Media LLC



Identificadores do Documento
DOI - https://doi.org/10.1007/bf02046782
URL - http://dx.doi.org/10.1007/bf02046782

Identificadores de Qualidade
Google Metrics (1992) -
SCOPUS (1992) -
CITESCORE (until 2019) (1992) -

Keywords
Physical Chemistry Inorganic Chemistry Reference Material Mesh Size Bulk Material Evernia prunastri