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Effect of a Dual-Head Short-Stroke Pump on Post-Column Peroxyoxalate Chemiluminescence Detection

Effect of a Dual-Head Short-Stroke Pump on Post-Column Peroxyoxalate Chemiluminescence Detection

K Hayakawa, N Imaizumi, M Miyazaki

Biomed Chromatogr. 1991 Jul;5(4):148-52.

PMID: 1912722

Abstract:

A dual-head short-stroke pump has two advantages in the post-column peroxyoxalate chemiluminescence (PO-CL) detection system. The first is to increase the mixing efficiency of solutions. The second is to increase the stability of the PO-CL reaction by keeping the aryl oxalate and hydrogen peroxide solutions separate. The detection sensitivities for six polycyclic aromatic hydrocarbons (PAHs) increased in the present system by using bis(2,4-dinitrophenyl) oxalate (DNPO) or bis(2,3,4,5,6-pentafluorophenyl) oxalate (PFPO) instead of such popular aryl oxalates as bis(2,4,6-trichlorophenyl) oxalate (TCPO) and bis[2-(3,6,9-trioxadecyloxycarbonyl)-4-nitrophenyl] oxalate (TDPO). Both DNPO and PFPO increased the sensitivities by factors of 4.1-10.2 and 3.5-8.1, respectively. In addition, DNPO was more stable than PFPO in acetonitrile. These results suggest that DNPO is the most useful aryl oxalate for the sensitive PO-CL detection of PAHs.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP16536304	Bis(2,4-dinitrophenyl) oxalate		16536-30-4	Price

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