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Table 1 Effects of various free-radical scavengers on the ABEI–H2O2–HRP-sodium fluorescein CL system

From: Determination of tyrosine by sodium fluorescein-enhanced ABEI–H2O2–horseradish peroxidase chemiluminescence

Quenchers

Intermediates

Concentration

Percent inhibition, %

TEMPO

·OH, 1O2

1 mmol/L

63.8

Ascorbic acid

·OH, O2·

1 mmol/L

98.7

Thiourea

·OH

1 mmol/L

53.7

Histidine

1O2

1 mmol/L

12.3

SOD

O2·

0.1 μg/mL

90.2