Table 3.
Analytical characteristics of optical sensors for cadmium determination in water, published between 2007 and 2009.
| Method | Tested sample | LoD (mg/L) | RSD (%) | Ref. |
|---|---|---|---|---|
| Absorbance of 4-hydroxy salophen on triacetyl cellulose membrane at 431 nm | Wastewater & river water | 0.06 | 2.9 | [63] |
| Fluorescence enhancement of porphyrin-terpyridine complex | River waters | 0.13 | 4.1 | [64] |
| Nine cross-reactive sensing fluorescent elements on micro-plate & data processed by pattern recognition | Mineral waters | 0.56 | nr | [65] |
| Photoluminescence enhancement of CdS:Mn/ ZnS Qdots in 1,10-diaza-18-crown-6 shell | Standard | 11 | nr | [66] |
| Fluorescence enhancement of 8-hydroxyquinoline (319/410 nm) | Standard | 3,000 | nr | [67] |
*
LoD: Limit of Detection; RSD: Relative Standard Deviation; nr: not reported; DPASV: Differential Pulse Anodic Stripping Voltammetry; SWASV: Square-Wave Anodic Stripping Voltammetry; LSASV: linear-scan anodic stripping voltammetry.