Asian Journal of Chemistry by https://asianpubs.org/
AJC
Asian Journal of Chemistry
Asian Journal of Chemistry, an International Peer Reviewed Research Journal of Chemistry ISSN: 0975-427X (Online) | ISSN: 0970-7077 (Print) | CODEN: AJCHEW
Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rajathewi, Bangkok 10400, Thailand
N. Chomnawang
School of Electrical Engineering, Institute of Engineering, Suranaree University of Technology, Suranaree, Muang District, Nakhon Ratchasima 30000, Thailand ; The Siam Photon Laboratory of the Synchrotron Light Research Institute, Suranaree, Muang District, Nakhon Ratchasima 30000, Thailand
N. Youngvises
Department of Chemistry, Faculty of Science and Technology, Thammasat University, Rangsit Center, Pathum Thani 12121, Thailand
W. Threeprom
Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rajathewi, Bangkok 10400, Thailand ; Interdisciplinary Division, Mahidol University, Kanchanaburi Campus, Kanchanaburi 71150, Thailand
Corresponding Author(s) : W. Threeprom
wthreeprom@yahoo.com
Asian Journal of Chemistry,
Vol. 25 No. 12 (2013): Vol 25 Issue 12
A miniaturized system for determination of nitrite and nitrate by microfluidic device with chemiluminescence detection has been described. This method is based on chemiluminescence reaction produced by oxidation of nitrite with hydrogen peroxide in acid medium in the presence of alkaline luminol. The sequential determination of nitrite and nitrate utilized an off-line photolytic reduction of nitrate to nitrite was applied incorporating with EDTA as an activator. Efficiency of the photo-conversion was satisfactory good with 47-52 % of conversion. The optimized condition provided a linearity range between 0.5-100 μM for nitrite and 1.0-100 μM for nitrate. The detection limit for nitrite and nitrate were 2.1 × 10-2 μM and 9.3 × 10-2 μM, respectively. The precision of the method was satisfactory good with % RSD of 5 μM of nitrite and 10 μM of nitrate were less than 3.3 and 3.6 %, respectively (n = 10). The potential ion interferences namely Fe2+, Fe3+, Cu2+ and Mn2+ were completely eliminated by on-line passing through the samples on cation exchange column. This proposed method was successfully applied for quantitative analysis of nitrite and nitrate in environmental water samples and agricultural soil samples with desirable recovery ranging from 85 to 110 %.
Laitip, N., Chomnawang, N., Youngvises, N., & Threeprom, W. (2013). Utilization of Microfluidic Device for Determination of Nitrite and Nitrate in Water and Soil Samples. Asian Journal of Chemistry, 25(12), 6486–6490. https://doi.org/10.14233/ajchem.2013.13745
Single flow-based system for the automatic multiparametric nutrients (NPK & Fe) assessment in soil leachates. Talanta, 268, 10.1016/j.talanta.2023.125321
Morsy M.K. (2022)
Development and Validation of Rapid Colorimetric Detection of Nitrite Concentration in Meat Products on a Polydimethylsiloxane (PDMS) Microfluidic Device. Food Analytical Methods, 15(2), 552-564. 10.1007/s12161-021-02139-5
Khongpet W. (2020)
A compact multi-parameter detection system based on hydrodynamic sequential injection for sensitive determination of phosphate, nitrite, and nitrate in water samples. Analytical Methods, 12(6), 855-864. 10.1039/c9ay02327e
Xin L. (2017)
Quantitative Monitoring of Rutin in Human Urine by Flow Injection-Chemiluminescence Analysis. Journal of the Chinese Chemical Society, 64(6), 711-719. 10.1002/jccs.201600884
Youngvises N. (2015)
Double-sided microfluidic device for speciation analysis of iron in water samples: Towards greener analytical chemistry. Analytical Sciences, 31(5), 365-370. 10.2116/analsci.31.365
