A portable analytical system for rapid on-site determination of total nitrogen in water

C Zhao, L Chen, G Zhong, Q Wu, J Liu, X Liu - Water Research, 2021 - Elsevier
Excessive total nitrogen (TN) in the aqueous environment causes a notable negative impact
on agriculture, human health, and the economy on a global scale. Conventional analytical …

On-site detection of nitrate plus nitrite in natural water samples using smartphone-based detection

T Fang, H Li, G Bo, K Lin, D Yuan, J Ma - Microchemical Journal, 2021 - Elsevier
Nitrate plays an important role in the nitrogen cycle and is also a known pollutant of the
aquatic ecosystem. Rapid, sensitive, and on-site analysis of nitrate is helpful for …

Low cost lab on chip for the colorimetric detection of nitrate in mineral water products

MF Khanfar, W Al-Faqheri, A Al-Halhouli - Sensors, 2017 - mdpi.com
The diagnostics of health status and the quality of drinking water are among the most
important United Nations sustainable development goals. However, in certain areas, wars …

Open-source photometric system for enzymatic nitrate quantification

BT Wittbrodt, DA Squires, J Walbeck, E Campbell… - PloS one, 2015 - journals.plos.org
Nitrate, the most oxidized form of nitrogen, is regulated to protect people and animals from
harmful levels as there is a large over abundance due to anthropogenic factors. Widespread …

Speciation of nitrogen in wastewater by flow injection

A Cerdà, MT Oms, R Forteza, V Cerdà - Analyst, 1996 - pubs.rsc.org
A rapid method for the sequential determination of nitrite, nitrate and total nitrogen is
proposed. Nitrite was determined directly by using the Griess reaction, which was also used …

Evaluation of a second derivative UV/visible spectroscopy technique for nitrate and total nitrogen analysis of wastewater samples

MA Ferree, RD Shannon - Water research, 2001 - Elsevier
A method for nitrate analysis based on second derivative UV/Visible spectroscopy was
developed by Simal et al.(1985: Simal J., Lage MA, and Iglesias I.(1985) Second derivative …

Ultraviolet spectrophotometric determination of nitrate: detecting nitrification rates and inhibition

RT Kelly, NG Love - Water environment research, 2007 - Wiley Online Library
Simple methods that rapidly detect nitrification inhibition are needed to enforce pretreatment
programs and prevent upsets. The objective of this study was to demonstrate a rapid method …

Mobile-phone-based colourimetric analysis for determining nitrite content in water

C Puangpila, J Jakmunee, S Pencharee… - Environmental …, 2018 - CSIRO Publishing
Environmental context A widespread pollutant in groundwater, rivers and lakes is nitrite,
which is commonly determined batchwise by using colourimetry. The batchwise method …

[HTML][HTML] Portable device for on-site detection of ammonia nitrogen

X Xu, Z Bai, T Wang - Information Processing in Agriculture, 2022 - Elsevier
Portable measurement of ammonia nitrogen in water is of great significance for water quality
monitoring. It's beneficial to reduce biological diseases and promote aquatic product safety …

New Green and Sustainable Tool for Assessing Nitrite and Nitrate Amounts in a Variety of Environmental Waters

HR Robles-Jimarez, N Jornet-Martínez… - Water, 2023 - mdpi.com
This paper aims to provide improved selectivity and sensitivity with a short analysis time of
about 10 min and low residues for quantitation of nitrite and nitrate in waters by liquid …