ZHANG Yun-ran,WEI Jun-yi,YU Qiu-ling,ZHANG Yong-mei,XIE Wei.Determination of 64 Extractable Substances of Concern in Medicinal Rubber Stoppers by GC-MS/MS[J].Journal of Instrumental Analysis,2025,44(10):1-9.
ZHANG Yun-ran,WEI Jun-yi,YU Qiu-ling,ZHANG Yong-mei,XIE Wei.Determination of 64 Extractable Substances of Concern in Medicinal Rubber Stoppers by GC-MS/MS[J].Journal of Instrumental Analysis,2025,44(10):1-9. DOI: 10.12452/j.fxcsxb.241028490.
Determination of 64 Extractable Substances of Concern in Medicinal Rubber Stoppers by GC-MS/MS
An analytical method based on gas chromatography-triple quadrupole mass spectrometry(GC-MS/MS) was established for simultaneous determination of 64 extractable substances of concern(including 26 alkanes,19 plasticizers,18 polycyclic aromatic hydrocarbons and azobenzene) in medicinal rubber stoppers.The medicinal rubber stoppers were extracted with ethyl acetate for 40 minutes at water bath ultrasonic extraction,then separated on TG-17Sil MS(30 m×0.25 mm×0.25 μm) column using electron impact ionization(EI) source and detected by dynamic selected reaction monitoring (dSRM) mode. Quantification was performed using internal standard method. The results showed that under the optimal conditions,the 64 extractable substances of concern had good linear relationship(
r
2
>
0.99) in their respective concentration ranges,the limits of detection(LODs) ranged from 0.005-0.10 mg/kg and the limits of quantification(LOQs) ranged from 0.01-0.50 mg/kg. The average spiked recoveries were 86.8%-114%,with relative standard deviations(RSDs) of 0.40%-7.7% at different spiked levels. The established method was used to detect 20
batches of medicinal rubber stopper samples,and target compound residues were detected in 5 batches of samples. This method is simple,fast,sensitive,and high throughput,and can be used for the rapid detection of 64 extractable substances of concern in medicinal rubber stoppers.
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