原文由 有水有渝(xky0230699) 发表:
检测波长是多少?
仪器、柱子、水、乙腈、TFA等因素都排除了,如何排除的,比如柱子,是把柱子拆了,换上阻尼管代替后,后出来的图谱也是一样的吗,水用的是自制的,还是市售的,乙腈,TFA等更换市售的品牌了吗?
原文由 zlignc(zlignc) 发表:
Even you hava a low level of impurities present in the mobile phase (MP), when you flow a large volume of MP through the column,impurities will accumulate on the column when you have low percentage of organic solvent in the MP. They will be eluted when the organic percentage in the MP increases. This should be one of the potential causes.