Neu nhu ban phan tích acetaldehyde thi hien nhien ban phai dung duong chuan cua acetaldehyde, con ban muon phan tích nhom chuc aldehyde thi ban lam theo tieu chuan AOAC(pp chuan do). aldehyde la mot nhom chuc nen ban khong the dinh luong ca nhom chuc bang pp GC duoc.
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