The Use of 7,7′,8,8′-Tetracyanoquinodimethane for the Spectrophotometric Determination of Some Primary Amines Application to Real Water Samples

Table 6

Effect of foreign compound on the recoveries of ethylamine and p-aminophenol.

Foreign compound	Ethylamine (0.5 μg/mL)		p-Aminophenol (1 μg/mL)
	Amount added (μg/mL)	Recovery (%)	Amount added (μg/mL)	Recovery (%)
Diethylamine	20	98.6	5	98.0
Diphenylamine	55	97.2	20	103.0
Triethylamine	5	96.8	10	107.0
Dimethylaniline	250	99.0	10	99.1
Acetanilide	1000	100.7	100	99.6
Acrylamide	2500	100.7	25	101.8
n-Hexane	1000	102.0	100	101.4
NaCl	500	96.0	5	104.2
Glucose	2500	95.6	25	100.9