Hplc ゴーストピーク
Hplc ゴーストピーク . The peaks in the blank injection can be attributed to injector carryover as they have the same retention times and chromatographic characteristics as the known peaks in the sample, but are at a lower level. 1 2 3 4 5. 微量不純物分析システム Nexera UHPLC/HPLC System 株式会社島津製作所 from www.an.shimadzu.co.jp The peaks in the blank injection can be attributed to injector carryover as they have the same retention times and chromatographic characteristics as the known peaks in the sample, but are at a lower level. The cause can be from a faulty rotor seal on the injector valve, needle wash contamination, or an inappropriate sample or needle wash solvent. ゴーストピークとは：サンプルに由来しない、出所不明のピークのこと。 ①キャリーオーバーかどうかを判 定：サンプル注入後、ブランクを 繰り返し注入 ②洗浄溶媒の容量を変更 ゴーストピークの対処手順（p6）へ ③強洗浄溶媒の種類を変更