Intraday and interday precisions of the CS/AuNPs@TDA for the detection of three concentrations of As3+.
| As3+ (mg L−1) | RSD (%) | |
|---|---|---|
| Intraday (n = 5) | Interday (3 days) | |
| 0.10 | 2.98 | 3.01 |
| 0.50 | 2.87 | 3.27 |
| 1.00 | 1.22 | 0.45 |
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