Research Article

Online Determination of Trace Amounts of Tannic Acid in Colored Tannery Wastewaters by Automatic Reference Flow Injection Analysis

Table 1

Determination of tannic acid in tannery wastewater by the proposed method.

SampleMeasuredAddedFoundRecovery
(mg L-1)(mg L-1)(mg L-1)(%)

1#20.5920.0041.83106.2
2#18.7320.0039.05101.6
3#21.2220.0040.7497.6
4#4.325.009.1496.4