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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Comparison of Analytical Methods for DEHP Migration from PVC Bags for Blood Storage and Infusion; By Gas Chromatography and UV-vis Spectrophotometry

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2002, v.15 no.1, pp.72-79
Kim, Jung Hwan
Kim, Seong Hun
Choi, Hyeong Ki
Lee, Chang Hyung
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Abstract

Di-(2-ethylhexyl)phthalate (DEHP) may be released from plasticized poly(vinyl chloride) (PVC) articles. In the cases of various methods for the quantitative analysis of migrating DEHP, there are much differences in migrating quantity according to the experimental methods. It is therefore important to make the comparison and analysis between these two results. A study of DEHP migration from blood and infusion bags has been carried out in different methods to evaluate the amount of DEHP migration using gas chromatograph and UV-vis spectrophotometry. Five PVC bags were cut into plane sheets in size of <TEX>$40{\times}10{\times}0.4mm$</TEX>, then were immersed in extraction solvent for an hour to release DEHP. It was determined by a gas chromatograph that <TEX>$23.2{\sim}70.9{\mu}g/mL$</TEX> of DEHP was extracted. While extraction solvent was injected into PVC bags which were then placed for an hour to leach DEHP out. It was checked by a UV-vis spectrophotometer that the concentration of DEHP in extraction solvent was <TEX>$24.8{\sim}41.3{\mu}g/mL$</TEX>. Two results show different values according to the extraction conditions and experimental methods and the gas chromatographic results were converted into UV-vis spectroscopic results on condition that DEHP would be extracted equally per unit time and unit contact area. It was concluded that DEHP migrating amounts are approximately equal in two analytical methods.

keywords
poly(vinylchloride), di-(2-ethylhexyl)phthalate, plasticizer migration, gas chromatograph, UV-vis spectrophotometry


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