Ammonia nitrogen, consisting of un-ionized ammonia and ammonium, is a key parameter for
studying the nitrogen cycle and indicating water quality. The measurement of these …

Ammonia nitrogen (ammonia or ammonium) is widely present in natural waters and can
significantly affect aquatic flora and fauna. It plays an extremely important role in human …

The accurate measurement of ammonium concentrations is fundamental to understanding
nitrogen biogeochemistry in aquatic ecosystems. Unfortunately, the commonly used …

Abstract Ammonium (NH 4+) and ammonia (NH 3) in aquatic ecosystems are of great
interest to environmental scientists because they can be used to study the nitrogen cycle …

Ammonium plays an important role in the nitrogen cycle in marine environments. There is no
universal method for ammonium analysis that can be applied to all types of seawater and …

Ammonia is an important nutrient in coastal and oceanic waters due to its role in the aquatic
nitrogen cycle. However, the presence of the analyte at trace concentrations (nanomolar) …

Aquatic chemical sensors have experienced rapid development in recent years largely due
to advances in the fields of nanotechnology. Accurate in situ monitoring of nutrients is …

We studied a recently described method for the determination of total nitrogen in natural
waters involving sample oxidation with persulfate and subsequent determination of nitrate …

A study was conducted to compare the precision and accuracy of the phenate method and
the salicylate method for determining total ammonia nitrogen concentration in water over a …

Ammonia has drawn great concern worldwide due to its ubiquity in surface water and high
toxic effect. In China, ammonia pollution issues in the Liao River were highlighted from the …