effective carbon number

[iren121]

Меня интересует что означает effective.

The boiling-point scale can be linked to effective carbon number.

Thanks.

[alk]

Эффективное углеродное число. ECN.
Словарь http://www.hplc.ru/dict3.htm
Дебри
http://www.chromatographia.de/daten/october_54_abstracts.htm
...The sensitivity of a detector to an organic molecule containing heteroatoms is referred to normal hydrocarbons by means of the effective carbon-atom number (ECN) value. By use of the values of increments in ECN for heteroatoms and functional groups, the ECN can be calculated for any organic molecule...For all types of compound investigated the difference between the actual carbon number and the calculated effective carbon number (dECN) was compared with literature data, and an attempt was made to interpret the differences.