Tetraazacyclohexadeca Macrocyclic Ligand as a Neutral Carrier in a Cr Ion-selective Electrode
Abstract
:Introduction
Experimental
Synthesis of macrocycle
Electrode preparation
Potential measurements
Sample preparation and determination of Cr(III) in various food materials
Results and discussion
Working concentration range
Response and life time
pH and solvent effect
Selectivity
Estimation of Cr(III) in various food materials
Conclusions
Acknowledgments
References
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No. | Ionophore | Working conc. range/M | Slope/mV/dec. | pH Range | Response time/s | Ref. |
---|---|---|---|---|---|---|
1 | Nickel ris(1,10-batho-phenanthroline) hydrogen chromate | 2.0×10-2-8.0×10-6 | 55.5 | 5.0 | - | [11] |
2 | Macrocycle based | 1.8×10-6-1.0×10-1 | 20.0 | 3.0-6.5 | 15 | [12] |
3 | 4-Dimethyl-aminoazobenzene | 1.7×10-6-1.0×10-2 | 19.5 | 3.0-5.5 | 10 | [13] |
4 | Glyoxal bis(2-hydroxyanil) | 4×10-6-1.0×10-1 | 19.8 | 2.7-6.5 | <20 | [15] |
5 | Tetraaza macrocyclic based | 1.6×10-6-1.0×10-1 | 19.5 | 3.0-6.5 | 18 | Present Electrode |
Mem-braneNo. | Composition of Membrane (proportions) | Working Concentration Range/mol L-1 | Slope/mV/dec. | Response Time/s | |||
---|---|---|---|---|---|---|---|
Iono-phore | Poly-styrene | DBP | STB | ||||
1. | 2 | 1 | 1 | 1 | 4.0×10-6-1.0×10-1 | 22.5 | 25 |
2. | 4 | 1 | 1 | 1 | 1.6×10-6-1.0×10-1 | 19.5 | 18 |
3. | 6 | 1 | 1 | 1 | 3.2×10-6-1.0×10-1 | 18.5 | 28 |
4. | 8 | 1 | 1 | 1 | 7.1×10-6-1.0×10-1 | 21.5 | 30 |
5. | 10 | 1 | - | 1 | 5.0×10-5-1.0×10-1 | 24.0 | 20 |
Interferent (B) | Selectivity coefficient | Interferent (B) | Selectivity coefficient |
---|---|---|---|
Li+ | 1.80 × 10-1 | Cu2+ | 2.66 × 10-2 |
Na+ | 1.75 × 10-1 | Ni2+ | 3.26 × 10-3 |
Ag+ | 4.42 × 10-3 | Zn2+ | 2.25 × 10-1 |
Ca2+ | 1.41 × 10-2 | Mg2+ | 2.38 × 10-2 |
Ba2+ | 8.92 × 10-2 | Fe3+ | 2.25 × 10-4 |
Hg2+ | 7.00 × 10-3 | Al3+ | 7.08 × 10-4 |
Sr2+ | 7.50 × 10-2 | Bi3+ | 3.82 × 10-4 |
Pb2+ | 1.42 × 10-3 | La3+ | 2.66 × 10-5 |
Cd2+ | 6.80 × 10-3 |
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Singh, A.K.; Singh, R.; Saxena, P. Tetraazacyclohexadeca Macrocyclic Ligand as a Neutral Carrier in a Cr Ion-selective Electrode. Sensors 2004, 4, 187-195. https://doi.org/10.3390/s41200187
Singh AK, Singh R, Saxena P. Tetraazacyclohexadeca Macrocyclic Ligand as a Neutral Carrier in a Cr Ion-selective Electrode. Sensors. 2004; 4(12):187-195. https://doi.org/10.3390/s41200187
Chicago/Turabian StyleSingh, Ashok Kumar, Rupam Singh, and Puja Saxena. 2004. "Tetraazacyclohexadeca Macrocyclic Ligand as a Neutral Carrier in a Cr Ion-selective Electrode" Sensors 4, no. 12: 187-195. https://doi.org/10.3390/s41200187
APA StyleSingh, A. K., Singh, R., & Saxena, P. (2004). Tetraazacyclohexadeca Macrocyclic Ligand as a Neutral Carrier in a Cr Ion-selective Electrode. Sensors, 4(12), 187-195. https://doi.org/10.3390/s41200187