Determination of manganese in some food and tea samples.
| Samplea | Manganese/μg g−1 | ||||
|---|---|---|---|---|---|
| ICP-MS (n = 5) | Proposed method (n = 5) | ||||
| Found | RSDb (%) | Found | RSDb (%) | ||
| Tea (Camellia sinensis) | Proyash tea | 285.8 | 1.8 | 289.5 | 1.5 |
| Ispahani tea | 282.4 | 1.9 | 285.0 | 1.7 | |
| Taza tea | 188.8 | 2.0 | 185.5 | 1.8 | |
| Seylon tea | 297.6 | 2.1 | 299.3 | 1.5 | |
| Green tea | 295.5 | 2.0 | 198.2 | 1.8 | |
| Rice (Oryza sativa) | 1.95 | 1.0 | 1.98 | 1.2 | |
| Wheat (Triticum aestivum) | 2.88 | 1.6 | 2.91 | 1.6 | |
a
Samples were from Local market, Chittagong.
b
The measure of precision is the relative standard deviation (RSD).