Table 9.
Analytical characteristics of optical sensors for lead determination in water published between 2007 and 2009.
| Method | Tested sample | LoD (μg/L) | RSD (%) | Ref. |
|---|---|---|---|---|
| Fluorimetry (475/518nm) on thrombin-binding aptamer probe labeled with carboxyfluorescein & 4-([4-(dimethylamino)phenyl]azo)benzoic acid (turn on) | Pond water | 0.1 | 1.3 | [90] |
| Fluorimetric scanning of metal dependent DNAzymes microarray | Spiked river water | 2 | 6.7 | [135] |
| Colorimetry (434 nm) of 4-hydroxysalophen on cellulose membrane | River & wastewater | 18 | 2.1 | [136] |
| Fluorimetry (365/418 nm) on polyfluorene with two benzo-18-crown-6 side chains (turn off) | Standards | 1,000 | nr | [137] |
| Colorimetry (530 nm) on diphenylcarbazone/PVC membrane | Natural & wastewater | 1,300 | nr | [138] |
*
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.