The application of an evaporative light scattering detector in polymer analysis

Post-column addition as a method of controlling triacylglycerol response coefficient of an evaporative light scattering detector in liquid chromatography–evaporative light-scattering detection

“…These values are in agreement with the fact that there is little difference in b, within one chemical family but such values differ strongly from the common b value, which is generally higher than 1.50 in normal-phase chromatog- raphy and lower than 1.50 in reversed-phase chromatography [27]. Such a difference may be explained according to Schultz and Engelhardt [28] by solvatation of TGs. Particles that scatter the light are composed of TGs associated to solvent as aggregates.…”

“…The results reported here may explain also the lack of reproducibility sometimes noted with ELSD [28]; it could be due to small quantities of impurities present in the mobile phase or gas phase and it justifies the special grade of solvent required in ELSD as well as the purity of the nebulizing gas.…”

High-temperature gradient HPLC for the separation of polyethylene–polypropylene blends

“…Therefore, the system should be suitable to separate PE-PP blends into the components. It is well known, that the response of the evaporative light scattering detector (ELSD) depends on the amount of the analyte and the mobile phase composition while it is considered to be independent of the chemical composition and molar mass of the analyte [42,43]. To prove if the amount of PE and PP in a given blend can be quantified using the ELSD, five blends of different compositions were prepared and analyzed.…”

Adsorption of polypropylene from dilute solutions on a zeolite column packing

“…the peak area, is an exponential function of sample concentration [32,33]. in several mobile phases.…”