tin(ii)-ion-selective electrode consisting of dibenzo-18-crown-6 (db18c6) as an ionophore inpvc matrix was developed. the influences of membrane composition, selectivity, response time,reversibility and temperature on the electrode performance were investigated. the electrodeshowed a near nernstian response for sn2+ ions over a concentration range from 1.0× 10-6 – 1.0× 10-2 m with a slope of 27...

in order to study the cu(ii) ion selective electrode, an optimized membrane was prepared by mixing of 30 mg of pvc powdered, 5 mg of considered ionophore, 60 mg of plasticizer and 5 mg of additive. the sensor showed a near nernstian response for cu(ii) ions over a concentration range from 1.0×0-6 –1.0×0-2 m with a slope of 28.90.5 mv per concentration decade with a working ph range of 3.5-6.3. ...

in order to preparing strontium ion selective electrode 6-(4- nitropheny1)-2-pheny14, 4- dipropy1-3, 5-diaza-bicyclo [3, 1, 0] hex-2-ene (npdbh) was used as an ionophore. this electrode responds to sr (ii)ion with a sensitivity of 28.2 ± 0.5 mv/decade over the range 1.0 x 10-6 to 1.0 mat ph 3.0-10.0. thelimit of detection was 2.4 x 10-7 m. the influences of membrane composition, the ph of the t...

patients with type 1 diabetes mellitus have a high prevalence of coeliac disease, symptoms of which are often mild, atypical, or absent. untreated coeliac disease is associated with an increased risk of malignancy, particularly of lymphoma. therefore, we report a 9-year-old girl with coeliac disease, diabetes type 1 and selective iga deficiency. a 9-year-old female patient presented in august 2...

a pvc membrane ni(ii) ion selective electrode has been constructed using (1e,2e)-bis(2-aminophenyl)n'1,n'2-dihydroxyethanebis as membrane carrier. the electrode exhibited a goodpotentiometric response for ni(ii) over a wide concentration range 1.0×10-4 to 1.0×10-1m with aslope of 29.4±0.5 mv/decade a and a working ph range of 6.5-9.0. it had a fast response time of≤20s. the best performance was...

a pvc membrane fe(iii) ion selective electrode has been constructed using a new macrocyclic asmembrane carrier.the electrode exhibits a good potentiometric response for fe(iii) over a wideconcentration range 1.0×10-4 to 1.0×10-1m with a slope 19.4±0.5 mv/decade a and a working phrange of 6.5-9.0. it has a fast response time ≤30s.the best performance was observed with themembrance having the 30....

we found that dibenzo-18-crown-6 (db18c6) can be used as an ionophore to make a tin (ii)-ionselectivemembrane electrode. the electrode exhibits a near nernstian response for sn2+ ions over aconcentration range from 1.0× 10-6 – 1.0× 10-2 m with a slope of 27.5 ± 0.6 mv per concentration decadein an acidic solution (ph=1). the limit of detection was 8.0× 10-7 m. it has a response time of < 20s an...