High Sensitivity and Selectivity of Mercury Sensor Based Membrane Ion Selective Electrode with Sputtring Method

2021 ◽  
Author(s):  
Arjon Turnip ◽  
Gilbert Sihombing ◽  
Giraldo Sihombing ◽  
Sanggam P. Gultom ◽  
Darmawan Hidayat
Keyword(s):  
High Sensitivity ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Sensitivity And Selectivity ◽  
Mercury Sensor

High Sensitivity Sulphite Membrane Selective Electrode and its Application

2021 ◽  
Vol 43 (4) ◽  
pp. 451-451
Author(s):  
Sukru Kalayci Sukru Kalayci
Keyword(s):  
Detection Limit ◽  
Confidence Interval ◽  
Response Time ◽  
Ph Value ◽  
High Sensitivity ◽  
Ion Selective Electrode ◽  
Sulfide Concentration ◽  
Selective Electrode ◽  
Perfluorooctanesulfonic Acid ◽  
Anions And Cations

In this study, the new sulphite sensitive ion-selective electrode (ISE) was prepared. The ISE was prepared from a combination of 5% perfluorooctanesulfonic acid (PFOS), 40% PVC and 55% dibutylphthalate (DBF).The sensitivity of the ISE to 1.0x10- 7-1.0x10-1 M sulphite concentration was 58 and#177; 4 mV. Electrode sensitivity was characterized. The response time of this electrode is short and 30 s. The lifetime of ISE was approximately 210 days when used five times a day. It was determined that it can work at any pH value. It is not sensitive to anions and cations that may be present in the determination medium. The detection limit of the electrode against the sulfide concentration was measured as 1.2x10-8 M. The amount of sulfites in dried apricots in Turkey, was measured with electrodes. Sulfite amount in dried apricot was determined as 2.328 and#177; 0.2417 mg / kg according to the average of 5 experiments and 95% confidence interval. The same sample was measured with DPP as 2.521 and#177; 0.2785.The validation of the obtained results in each case was proved by statistical “t” and “F” tests.

Schottky diodes based on 2D materials for environmental gas monitoring: a review on emerging trends, recent developments and future perspectives

2021 ◽  
Author(s):  
Minu Mathew ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensing ◽  
2D Materials ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Future Perspectives ◽  
Working Temperature ◽  
Emerging Trends ◽  
Gas Sensing Properties ◽  
Recent Developments ◽  
Sensitivity And Selectivity

This review details the fundamentals, working principles and recent developments of Schottky junctions based on 2D materials to emphasize their improved gas sensing properties including low working temperature, high sensitivity, and selectivity.

Titration of sulphates and lead using lead ion selective electrode

1981 ◽  
Vol 46 (2) ◽  
pp. 368-376 ◽  
Author(s):  
Josef Veselý
Keyword(s):  
Ionic Strength ◽  
Electrode Surface ◽  
Salt Content ◽  
Ion Selective Electrode ◽  
Lead Ion ◽  
Selective Electrode ◽  
Limit Of Determination ◽  
Total Salt Content ◽  
Automatic Titration

Titration of sulphates with lead perchlorate employing lead ion selective electrode indication was studied using additions of various organic solvents at different pH' and ionic strength values. As the optimum emerged systems with 60-70% 1,4-dioxane, pH' 5.3-5.6. After dehydration with sodium hydroxide, dioxane must be freed from the electrode surface-oxidizing impurities by their reduction with sodium metal and subsequent distillation. The method was applied to determination of sulphates in mountain spring waters. Units of ppm can be determined; the limit of determination, however, depends considerably on the content of dioxane, total salt content in the sample, and speed of the semi-automatic titration. Lead can be determined with EDTA in concentrations down to c(Pb2+) = 5 . 10-6 mol l-1.

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