摘要
测定硫化橡胶中游离硫含量常用的方法有化学滴定法、薄层显色法和紫外光谱法。这些方法操作繁琐,并且只适用于常量分析。薄层显色法所用的显色剂叠氮化钠是剧毒和易爆炸的药品,实验条件比较苛刻。本文采用GC-ECD法测定了15个硫化橡胶中游离硫的含量,与化学方法进行了对照,二者结果相符。与以前所用的方法相比,本方法样品和溶剂用量少,提取时间短,灵敏度和精度高,是测定硫化橡胶中微量游离硫的简便、快速方法,尚未见报道。
In this paper, an electron-capture gas chromatographic method for the micro amounts of free elemental sulfur in 15 rubber vulcanizates is described. The results obtained by this approach are comparable with obtained by chemical analysis. The detectability for element in salution is 10-12/μL. The quantity of extractant used, the extraction time, reliability and reproduci-bility of the method are discussed. The experimental results show that it is a simple and rapid method for determination of free elemental sulfur in rubber yulcanizates.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第3期296-298,共3页
Chemical Journal of Chinese Universities
关键词
硫化橡胶
游离硫
气相色谱法
Electron-capture gas chromatography, Rubber vulcanizates, Determination of micro amounts of free elemental sulfur
