Direct determination of a polymeric hindered amine light stabilizer in polypropylene by thermal desorption–gas chromatography assisted by in-line chemical reaction
Direct determination of a polymeric hindered amine light stabilizer in polypropylene by thermal desorption–gas chromatography assisted by in-line chemical reaction
复制标题
在线化学反应辅助热解吸气相色谱法直接测定聚丙烯中的聚合受阻胺光稳定剂
作者：
Keiichiro Kimura;T. Yoshikawa;Y. Taguchi;Y. Ishida;H. Ohtani;S. Tsuge
测定聚合受阻胺光的方法
研制了聚丙烯（PP）稳定剂（HALS）Adekastab LA-68 LD
基于反应热脱附-气相色谱法
在有机碱、四甲基铵存在下，
氢氧化物[（CH 3）4 NOH，TMAH]。使用25% TMAH的RTD-GC
甲醇溶液可以灵敏地测定聚丙烯中的HALS，
所得色谱图上的甲基化片段，相对标准偏差为4.8%
标准偏差，无需任何样品预处理。
A method to determine a polymeric hindered amine light
stabilizer (HALS), Adekastab LA-68LD, in polypropylene (PP) was developed
on the basis of reactive thermal desorption–gas chromatography
(RTD-GC) in the presence of an organic alkali, tetramethylammonium
hydroxide [(CH3)4NOH, TMAH]. RTD-GC using 25% TMAH
methanol solution allowed the sensitive determination of HALS in PP as
methylated fragments on the resulting chromatogram with a 4.8% relative
standard deviation without the need for any sample pre-treatment.