Highly sensitive determination of a polymeric hindered amine light stabilizer in polypropylene by reactive thermal desorption-gas chromatography using nitrogen-specific detection.
Highly sensitive determination of a polymeric hindered amine light stabilizer in polypropylene by reactive thermal desorption-gas chromatography using nitrogen-specific detection.
复制标题
采用氮特异性检测的反应热解吸气相色谱法高灵敏度测定聚丙烯中的聚合受阻胺光稳定剂。
DOI：
10.1016/s0021-9673(03)00323-6
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Yoshikawa
中科院分区：
文献类型：
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作者：
Y. Taguchi;H. Ohtani;S. Tsuge;Y. Ishida;Keiichiro Kimura;T. Yoshikawa
在有机碱四甲基氢氧化铵存在下，改进反应热解吸-气相色谱法（RTD-GC），建立了测定聚丙烯（PP）材料中痕量高分子受阻胺光稳定剂（HALS）的方法。通过氮磷检测，实现了对HALS相关成分的高选择性检测。此外，极性聚（乙二醇）分离柱的使用减轻了吸附的次要特定的热解产物。通过选择性观察含有四甲基哌啶部分的特征产物，这种改进的RTD-GC方法允许测定PP中的聚合HALS（Mr 1900），即使在100和500 ppm之间的痕量浓度，这在以前的RTD-GC条件下使用非极性分离柱和常规火焰离子化检测是不可能检测到的。
Highly sensitive and specific determination of trace amounts of a polymeric hindered amine light stabilizer (HALS) in polypropylene (PP) materials could be established by improving reactive thermal desorption–gas chromatography (RTD–GC) in the presence of an organic alkali, tetramethylammonium hydroxide. By using nitrogen–phosphorus detection, highly selective detection of the HALS-related components was attained. In addition, the use of a polar poly(ethylene glycol) separation column alleviated the adsorption of minor specific pyrolysis products. This modified RTD–GC method allowed the determination of the polymeric HALS (Mr1900) in PP even for trace concentrations between 100 and 500 ppm, through observing selectively the characteristic products containing a tetramethylpiperidine moiety, which had been impossible to detect under the previous RTD–GC conditions using a non-polar separation column and conventional flame ionization detection.