Determination of Nanogram Quantities of Emodin in Pharmaceutical Preparations and Biofluids by Luminol-Myoglobin Chemiluminescence System
Table 2
Results of emodin determination in spiked human serum.a
| | Sample no. | Added/found (ng·mL−1) | RSD (%) | Recovery (%) | By proposed method/spiked (μg·mL−1) |
| | 1 | 0/19.6 | 3.3 |
103.2 |
5.15/5.0 | | 20.0/40.3 | 2.1 | | 2 | 0/20.2 | 2.8 |
99.4 |
9.94/10.0 | | 30.0/50.1 | 1.9 | | 3 | 0/30.2 | 2.4 |
106.3 |
15.94/15.0 | | 20.0/51.3 | 2.1 | | 4 | 0/50.6 | 2.2 |
103.5 |
25.87/25.0 | | 20.0/71.3 | 1.6 | | 5 | 0/30.1 | 3.1 |
94.0 |
28.20/30.0 | | 20.0/48.9 | 1.5 | | 6 | 0/21.9 | 3.4 |
95.8 |
38.30/40.0 | | 20.0/43.9 | 2.3 |
|
|
aThe average of five determinations.
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