如果在样品中发现非目标溶剂峰该怎么办?
What happens to peaks in sample that are non-target solvent peaks?
可能的待测组分被完全被包埋在溶剂峰组分中。
Possible analytes are completely embedded overlap in solvent peaks.
然后,我们将溶剂峰也作为背景的一个部分加以扣除。
文章对该方法作了理论上的分析并给出了用于强溶剂峰抑制时的实验结果,获得良好的效果。
After theoretical analysis of this method, a good experimental result for strong solvent signal suppression is observed.
同时提出在单糖进行硅醚化反应后适量加水的简易后处理方法,能显著减少色谱测定时溶剂峰的“拖尾”,并消除了反应后产生的沉淀。
An improved and simplified after-treatment procedure has been developed which serves to significantly reduce the'tailing'of the solvent peak and to eliminate the precipitate produced in the reaction.
核磁共振谱通常是根据已知的溶剂残留质子峰进行校正,而不是添加四甲基硅烷。
NMR spectra are often calibrated against the known solvent residual proton peak instead of added tetramethylsilane.
回答:若在检查某种有机溶剂时发现了未知峰(非目标峰),应基于良好的科学技术和理念鉴别该峰,并与毒理学家协作确定样品中该未知成分的可接受限度水平。
If you come up with an unexpected peak while looking for a specific solvent, use good science to identify the peak and work with a toxicologist for the acceptable level in that material.
如果目标峰响应值解决不好,溶剂的较大干扰可能影响响应值的准确度和精确度。
A large solvent disturbance may affect accuracy and precision of response if it is poorly resolved from the peak of interest.
升高色谱柱的温度,不仅可以加快分析速度,而且还可以改善峰形,减少有机溶剂的使用。
Under the high temperature, not only the analytical time can be shortened, but the peak symmetry can be improved and the use of organic solvent can be decreased as well.
发现其谱形状与峰位不仅随溶剂性质而异,且随浓度而变。
It is found that the peak shape and peak wavelength change not only with solvent, but also with the concentration.
系统适用性试验可评估峰形、溶剂干扰、主峰相邻峰的分离和进样精密度。
System suitability tests may evaluate peak shape; separation of themain peak from solvent disturbance and from closely eluting peaks; andinjection precision.
试样以乙醇为溶剂时,会导致某些色谱峰的峰形不好。
When using ethyl alcohol as the solvent of the extract, some chromatographic peak shapes became abnormal.
双冷结晶峰现象在一些非反应性溶剂处理过的PET试样的DSC曲线也观察到。
Duplex cold crystal peak was also observed in the DSC of PET by vapour of unactive…
双冷结晶峰现象在一些非反应性溶剂处理过的PET试样的DSC曲线也观察到。
Duplex cold crystal peak was also observed in the DSC of PET by vapour of unactive…
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