Polystyrene standards were analyzed using GPC HK-401, an organic SEC (GPC) column for ultra-rapid analysis. The RI chromatograms showed that benzene peak overlapped with eluent related negative peak.


RI
Sample : 0.5 % each, 5 µL
1. Polystyrene (Mp: 1,270)
2. Polystyrene (Mp: 580)
3. n-Propylbenzene (MW: 120)
4. Benzene (MW: 78)

UV
Sample : 0.1 % each, 5 µL
1. Polystyrene (Mp: 1,270)
2. Polystyrene (Mp: 580)
3. n-Propylbenzene (MW: 120)
4. Benzene (MW: 78)

Columns      : Shodex GPC HK-401 (4.6 mm I.D. x 150 mm) x 2
Eluent       : THF
Flow rate    : 1.0 mL/min
Detector     : RI (small cell volume), UV (254 nm) (small cell volume)
Column temp. : 25 °C