采用自动吹扫捕集技术测定聚氯乙烯中十亿分之一级别的氯乙烯单体残留量。
Determination of vinyl chloride monomer residue in poly(vinyl chloride) at the parts-per-billion level with an automatic purge-and-trap technique.
作者信息
Poy F, Cobelli L, Banfi S, Fossati F
出版信息
J Chromatogr. 1987 Jun 12;395:281-9. doi: 10.1016/s0021-9673(01)94117-2.
PMID:3624352
Abstract
A method for the determination of vinyl chloride residue in poly(vinyl chloride) using a commercial purge-and-trap ancillary unit has been developed. Concentrations lower than 10 ppb (10(9] with relative standard deviations in the region of 10% in up to 24 samples are detectable with fully automatic operation without operator attendance. With multiple extraction of the same sample an external standard is used; the matrix does not have any influence on the recovery of vinyl chloride.
摘要
已开发出一种使用商用吹扫捕集辅助装置测定聚氯乙烯中氯乙烯残留量的方法。在全自动操作且无需操作人员值守的情况下，可检测到浓度低于10 ppb（10⁻⁹）的氯乙烯，对于多达24个样品，相对标准偏差在10%左右。对同一样品进行多次萃取时，使用外标法；基质对氯乙烯的回收率没有任何影响。
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