Determination of residual chloroform in medical polylactic acid membrane by gas chromatography / 实用口腔医学杂志
Journal of Practical Stomatology
; (6): 30-32, 2018.
Article
em Zh
| WPRIM
| ID: wpr-697448
Biblioteca responsável:
WPRO
ABSTRACT
Objective: To establish a method using gas chromatography for the determination of the residual chloroform in the medical polylactic acid membrane. Methods: The direct aqueous injection gas chromatographic method was established for the determination using RESTEK RTX capillary-column chromatography with the electron capture detector(ECD) at 270 ℃ and with the column at 85 ℃,maintained for 3 min. The split ratio of sampling was 10∶1. The injector temperature was 200 ℃. The high purity nitrogen was used as the carrier gas with the flow of 1. 0 ml /min. The injection volume was 1 μl. Results: The calibration curve showed a good linearity within the range of 25-2 000 ng /ml (r = 0. 999 9). The limit of detection was 1. 50 ng /ml,and the limit of quantitation was 4. 62 ng /ml. The average recovery rate was 98. 35%,RSD = 1. 98%. Conclusion: Gas chromatography is sensitive and accurate for the determination of the residual chloroform in the medical polylactic acid membrane.
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Índice:
WPRIM
Idioma:
Zh
Revista:
Journal of Practical Stomatology
Ano de publicação:
2018
Tipo de documento:
Article