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[求助] 气相中样品溶解方式不同出峰一样吗?

最近做气相,样品至2mlDMSO中,超声溶解,在1min多处有两个峰连在一起,很大。做标准溶液和空白就没有。
想把这两个大峰去除,找了很多原因,试了很多条件都没有解决。昨天配样中我忘了超声,直接就顶空加热了(样品易溶),结果走出的色谱图中没有前面两个大峰,又连着试了几针,都没有。这种情况是超声引起的吗?是不是超声时样品发生了什么反应。可是顶空温度是110℃,就不会发生反应吗?
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