Determination of 27 elements in Maca nationality's medicine by microwave digestion ICP-MS / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 4545-4551, 2015.
Artigo
em Chinês
| WPRIM
| ID: wpr-250454
ABSTRACT
An analysis method has been established to test 27 elements (Li, Be, B, Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Sr, Mo, Cd, Sn, Sb, Ba, La, Hg, Pb, Bi) in Maca nationality's medicine with microwave digestion-ICP-MS. Sample solutions were analyzed by ICP-MS after microwave digestion, and the contents of elements were calculated according to their calibration curves, and internal standard method was adopted to reduce matrix effect and other interference effects. The experimental results showed that the linear relations of all the elements were very good; the correlation coefficient (r) was 0.9994-1.0000 (Hg was 0.9982) ; the limits of detection were 0.003-2.662 microg x L(-1); the relative standard deviations for all elements of reproducibility were lower than 5% (except the individual elements); the recovery rate were 78.5%-123.7% with RSD lower than 5% ( except the individual elements). The analytical results of standard material showed acceptable agreement with the certified values. This method was applicable to determinate the contents of multi-elements in Maca which had a high sensitivity, good specificity and good repeatability, and provide basis for the quality control of Maca.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Espectrometria de Massas
/
Oligoelementos
/
Química
/
Reprodutibilidade dos Testes
/
Lepidium
/
Métodos
/
Micro-Ondas
Idioma:
Chinês
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2015
Tipo de documento:
Artigo
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