引用本文:
Jun Zhang, Shun Yang Yu, Tan Ji Yin, Xue Feng Hu, Wei Qin. A comparative study of four 20-membered N2S4-crown ethers as ionophores for polymeric membrane silver selective electrodes[J]. Chinese Chemical Letters,
2010, 21(4): 464-467.
doi:
10.1016/j.cclet.2009.11.028
Citation: Jun Zhang, Shun Yang Yu, Tan Ji Yin, Xue Feng Hu, Wei Qin. A comparative study of four 20-membered N2S4-crown ethers as ionophores for polymeric membrane silver selective electrodes[J]. Chinese Chemical Letters, 2010, 21(4): 464-467. doi: 10.1016/j.cclet.2009.11.028
Citation: Jun Zhang, Shun Yang Yu, Tan Ji Yin, Xue Feng Hu, Wei Qin. A comparative study of four 20-membered N2S4-crown ethers as ionophores for polymeric membrane silver selective electrodes[J]. Chinese Chemical Letters, 2010, 21(4): 464-467. doi: 10.1016/j.cclet.2009.11.028
A comparative study of four 20-membered N2S4-crown ethers as ionophores for polymeric membrane silver selective electrodes
摘要:
Four 20-membered N2S4-monoazathiacrown ethers have been synthesized and explored as neutral ionophores for Ag+-selective electrodes.Potentiometric responses reveal that the flexibility of the ligands has great effect on the selectivity and sensitivity to Ag+ions.The electrode based on ionophore 9,10,20,25-tetrahydro-5H,12H-tribenzo[b,n,r][1,7,10,16,4,13]tetrathiadiaza cycloicosine6,13-(7H,14H)-dione(C)with 2-nitrophenyl octyl ether(ο-NPOE)as solvent in a poly(vinyl chloride)(PVC)membrane matrix shows a measuring range of 1.0×10-6 to 1.0×10-3 mol/L with a Nemstian slope of 54.9±0.3 mV/decade.This electrode has high selectivity for Ag+with negligible interference from many other cations and can be used in a wide pH range of 3.6-9.2.
English
A comparative study of four 20-membered N2S4-crown ethers as ionophores for polymeric membrane silver selective electrodes
Abstract:
Four 20-membered N2S4-monoazathiacrown ethers have been synthesized and explored as neutral ionophores for Ag+-selective electrodes.Potentiometric responses reveal that the flexibility of the ligands has great effect on the selectivity and sensitivity to Ag+ions.The electrode based on ionophore 9,10,20,25-tetrahydro-5H,12H-tribenzo[b,n,r][1,7,10,16,4,13]tetrathiadiaza cycloicosine6,13-(7H,14H)-dione(C)with 2-nitrophenyl octyl ether(ο-NPOE)as solvent in a poly(vinyl chloride)(PVC)membrane matrix shows a measuring range of 1.0×10-6 to 1.0×10-3 mol/L with a Nemstian slope of 54.9±0.3 mV/decade.This electrode has high selectivity for Ag+with negligible interference from many other cations and can be used in a wide pH range of 3.6-9.2.
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Key words:
- Ion-selective electrodes
- / Silver
- / Ionophore
- / Azathiacrown ether
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