The recent developments for preconcentration and determination of nitrite.A review

In the present review, The combination of dispersive liquid-liquid microextraction (DLLME) with different analytical tchniques such as uv-vis spectrophotometry, Ionic liquid-high-performance liquid chromatography (IL- HPLC) and also methods spectrophotometry, Uv-Vis spectrophotometr, atomic absorption spectrometry(AAS), Headspace Single-Drop Microextraction (HS-SDME), for preconcentration and determination of trace levels of nitrite will be discussed. Recent developments in DLLME, displacement DLLME, The use of an auxiliary solvent for adjustment of density of extraction mixture, and the application of ionic liquid based DLLME in determination of nitrite in the presence of high content of salts are presented in the present review. Finally, comparison of DLLME with the other methods approaches and limit of detection (LOD), linear range of this technique are provided

کلیدواژه ها:

Nitrite ، Microextraction ، Aliquat ، Uv-Vis spectrophotometry