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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 Dans Chinois | WPRIM | ID: wpr-697448
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.

Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) langue: Chinois Texte intégral: Journal of Practical Stomatology Année: 2018 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) langue: Chinois Texte intégral: Journal of Practical Stomatology Année: 2018 Type: Article