Estimation of nitrite in source-separated nitrified urine with UV spectrophotometry

Water Research
Alma MašićKris Villez

Abstract

Monitoring of nitrite is essential for an immediate response and prevention of irreversible failure of decentralized biological urine nitrification reactors. Although a few sensors are available for nitrite measurement, none of them are suitable for applications in which both nitrite and nitrate are present in very high concentrations. Such is the case in collected source-separated urine, stabilized by nitrification for long-term storage. Ultraviolet (UV) spectrophotometry in combination with chemometrics is a promising option for monitoring of nitrite. In this study, an immersible in situ UV sensor is investigated for the first time so to establish a relationship between UV absorbance spectra and nitrite concentrations in nitrified urine. The study focuses on the effects of suspended particles and saturation on the absorbance spectra and the chemometric model performance. Detailed analysis indicates that suspended particles in nitrified urine have a negligible effect on nitrite estimation, concluding that sample filtration is not necessary as pretreatment. In contrast, saturation due to very high concentrations affects the model performance severely, suggesting dilution as an essential sample preparation step. However, this ca...Continue Reading

References

May 20, 2003·Water Research·Kai M UdertWilli Gujer
Jun 4, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·L RiegerH Siegrist
Oct 31, 2008·Talanta·M J MoorcroftR G Compton
Feb 9, 2010·Bioresource Technology·Andreja Drolc, Janez Vrtovsek
Nov 17, 2010·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Shovon Mohammad Shariar, Teruo Hinoue
May 31, 2012·Analytical and Bioanalytical Chemistry·N D LourençoH M Pinheiro
Aug 7, 2012·Water Science and Technology : a Journal of the International Association on Water Pollution Research·F Y SunL Y Peng

❮ Previous
Next ❯

Citations

Jan 9, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Alexandra FumasoliKai M Udert
Mar 23, 2021·Journal of AOAC International·Hong-Ying LiuChun-Chuan Gu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology
Xiu-yu CuiGuo-wei Lu
Combinatorial Chemistry & High Throughput Screening
Goedele AlaertsYvan Vander Heyden
American Journal of Veterinary Research
N R Schneider, R A Yeary
Water Science and Technology : a Journal of the International Association on Water Pollution Research
E I P VolckeP A Vanrolleghem
© 2021 Meta ULC. All rights reserved