[A rapid test for determining the content of residual monomer in polyvinyl chloride dust and granulate].
Rapid and cheap test is developed on the basis of colorimetric tubes "Hygitest", produced in Bulgaria, which could substitute, in a number of cases, the more expensive chromatographic procedure. The method of gas extraction of the examined material is used in the test, and as measuring instrument are used colorimetric tubes "Hygitest" type "Vinylchloride-1-A", which are supplied with reinforced filter for humidity and with special scale. A specially constructed flask is used for thermal desorption. The test has reproducibility and sensitivity significant for performing screening and routine control on the raw materials for production of packings from polyvinylchloride for nutrition purposes. The method "Vinyl-test" is standardized for control on the free monomer content in the packings for nutrition purposes with branch normal of the Ministry of Health and the State firm "Polychim" OH 02 77051-84 (Change No 1 of 8.07.1991).
Vardev
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P
Rizov
I
I
D002031:Bulgaria; D002138:Calibration; D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods; D003124:Colorimetry / Q000295:instrumentation; D004391:Dust / Q000032:analysis*; D005524:Food Technology; D011143:Polyvinyl Chloride / Q000032:analysis*; D012680:Sensitivity and Specificity; D014752:Vinyl Chloride / Q000032:analysis*
D004391:Dust; D011143:Polyvinyl Chloride; D014752:Vinyl Chloride
Bŭrz test za opredeliane sŭdŭrzhanieto na ostatŭchen monomer v polivinilkhloriden prakh i granulatr.