Research Article
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 |
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