Determination of Fluoroquinolones in Pharmaceutical Formulations by Extractive Spectrophotometric Methods Using Ion-Pair Complex Formation with Bromothymol Blue
Table 4
The results of analysis of pharmaceutical preparation and standard of fluoroquinolones by two different analysts and instruments ().
Method
Different instruments
Different analysts
X
±SD
RSD (%)
X
±SD
RSD (%)
Ofloxacin-BTB pure ofloxacin (10 µg·mL−1) Mekopharm (200 mg ofloxacin per tablet)
10.21
0.19
1.86
9.93
0.24
2.42
199
0.57
0.29
196
0.76
0.39
Levofloxacin-BTB pure levofloxacin (10 µg·mL−1) Stada (500 mg levofloxacin per tablet)
10.16
0.15
1.48
10.19
0.21
2.06
498
0.61
0.12
501
0.85
0.17
Ciprofloxacin-BTB pure ciprofloxacin (10 µg·mL−1) Hasancip (500 mg ciprofloxacin per tablet)
