Chemical composition as a criterion in the classification of aerobic actinomycetes J. Syst. Bacteriol., 20 (1970), pp. 435-443 CrossrefGoogle Scholar Madigan and Martinko, 2005 M. Madigan, J. Martinko Brock Biology of Microorganisms, 11th ed, Prentice-Hall, New Jersey, USA. (2005) Google...
An additional quality of ionization method is its inherent sub-classification of hard or soft. Hard ionization (such as that produced by the high 70 eV ionization energy of an EI source) is accompanied by extensive fragmentation often, but not always resulting in the absence of a molecular ion...