The Coated-Wire Ion-Selective Electrode (CWISE) of Tartrazine Using Chitosan as an Ionophore

Dewi Umaningrum (Department of Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkurat University, Banjarbaru|Lambung Mangkurat University|Indonesia Laboratory of Instrumentation Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkura)
Radna Nurmasari (Department of Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkurat University, Banjarbaru|Lambung Mangkurat University|Indonesia)
Siti Hasnah (Laboratory of Instrumentation Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkurat University, Banjarbaru|Lambung Mangkurat University|Indonesia)
Maria Dewi Astuti (Department of Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkurat University, Banjarbaru|Lambung Mangkurat University|Indonesia)
Kiki Amalia Wardhani (Department of Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkurat University, Banjarbaru|Lambung Mangkurat University|Indonesia)
Shofia Qalby (Department of Chemistry, Faculty of Mathematics and Natural Science, Lambung Mangkurat University, Banjarbaru|Lambung Mangkurat University|Indonesia)

JURNAL KIMIA SAINS DAN APLIKASI
Vol 24, No 6 (2021): Volume 24 Issue 6 Year 2021

Research on the Ion-Selective Electrode (ISE) of coated wire-type tartrazine using chitosan as an ionophore has been developed. The variables used in the manufacture of ISE are membrane composition and immersion time. Meanwhile, the basic characteristics of ISE measured are Nernst value, measurement concentration range, detection limit, and measurement response time. The results showed that ISE tartrazine coated wire type had an optimum membrane composition in a mixture of chitosan: PVC: DOP of 3: 34: 63 (% w/w) and a membrane immersion time 20 minutes. The basic characteristics of ISE produce a Nernst value of 20.976 mV/decade. The measurement concentration range is 1×10-7-1×10-2 M with a detection limit of 2.749×10-7 M or 0.1469 ppm. The response time ranges from 10-60 seconds, with an average of 40 seconds.