Choirul, Amri (2005) DETERMINATION OF NITRITE AS 4-(4-NITROBENZENAZO)-1-AMINONAPHTHALENE DYE USING OPTICAL MEMBRANES BASED ON PVC-DOS MATRIX. Indo. J. Chem, 5 (3). pp. 269-273.
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Abstract
A study of a liquid polymeric membrane based on polyvinylchloride-dioctylsebacate (PVC-DOS) as optical membrane for the spectrophotometric and visual determination of nitrite has been done. The method relied on the formation of a purple colored 4-(4-nitrobenzenazo)-1-aminonaftalen dye in the membrane. The result showed that liquid polymeric membrane can be used as an optical membrane for the determination of nitrite. Optimum conditions of method achieved at a wavelength of 525 nm, reaction pH of 1.7-1.8, and respon time of 45 minutes. This method gave linear range of concentration at 0.0-0.17 mg/L NO2-N, detection limit of 0.004 mg/L NO2-N, and sensitivity of 4.981+0.110 absorbance unit per mg/L of NO2-N. The spectrophotometric and visual optical membrane method by is good for the determination of nitrite at the concentration range of 0.01-0.11 mg/L NO2-N and 0.02-0.60 mg/L NO2-N, respectively.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > T Technology (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TP Chemical technology |
| Divisions: | > Jurusan |
| Depositing User: | admin kesling |
| Date Deposited: | 11 Dec 2017 04:28 |
| Last Modified: | 11 Dec 2017 04:28 |
| URI: | http://eprints.poltekkesjogja.ac.id/id/eprint/344 |
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