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Preparation of environmental samples for chemical speciation of metal/metalloids: A review of extraction techniques
(2021-05-01)
Chemical speciation is a relevant topic in environmental chemistry since the (eco)toxicity, bio (geo)chemical cycles, and mobility of a given element depend on its chemical forms (oxidation state, organic ligands, etc.). ...
Avaliação de procedimentos de preparo de amostra de amendoim in natura para análise de aflatoxinas
(Sociedade Brasileira de Química, 2010-01-01)
The variability in aflatoxin B1 concentration among peanut subsamples of 4 sample preparation procedures was evaluated. For each procedure, 18 samples were prepared involving dry comminuting/homogenization or dry roughly ...
Avaliação de procedimentos de preparo de amostra de amendoim in natura para análise de aflatoxinas
(Sociedade Brasileira de Química, 2010-01-01)
The variability in aflatoxin B1 concentration among peanut subsamples of 4 sample preparation procedures was evaluated. For each procedure, 18 samples were prepared involving dry comminuting/homogenization or dry roughly ...
Avaliação de procedimentos de preparo de amostra de amendoim in natura para análise de aflatoxinas
(2010-11-24)
The variability in afatoxin B1 concentration among peanut subsamples of 4 sample preparation procedures was evaluated. For each procedure, 18 samples were prepared involving dry comminuting/homogenization or dry roughly ...
Sample preparation combined with electroanalysis to improve simultaneous determination of antibiotics in animal derived food samples
(2018-06-01)
A procedure based on liquid–liquid extraction (LLE) and phase separation using magnetically stirred salt-induced high-temperature liquid-liquid extraction (PS-MSSI-HT-LLE) was developed to extract and pre-concentrate ...
Mechanisation in sample preparation by microwaves: The state-of-the-art.
(Soc Brasileira QuimicaSao PauloBrasil, 1997)
An overview of the main foodstuff sample preparation technologies for tetracycline residue determination
(2018-05-15)
Tetracyclines are widely used for both the treatment and prevention of diseases in animals as well as for the promotion of rapid animal growth and weight gain. This practice may result in trace amounts of these drugs in ...