Sensitive naked eye detection and quantification assay for nitrite by a fluorescence probe in various water resources

Recent Advances in Designing Colorimetric Probes for Nitrite Ions

“…[45] Zhang et al developed the switch-off fluorescence probe (PyI) to accurately detect nitrite ions in aqueous media. [46] With a detection limit of 0.1 M, this probe distinguishes nitrite ions from other ions by changing colour from colourless to pink (Figure 16). With recoveries in the range of 94.8 %-105.4 %, this method has been successfully used to determine the presence of nitrites in tap water, lake water, etc.…”

Small-molecule fluorescent probes based on covalent assembly strategy for chemoselective bioimaging

“…In recent years, uorescent probes have been developed for the detection of nitrite ions. [20][21][22][23][24][25][26] However, most of these probes have limited have been developed practical application due to their low sensitivity, high background uorescence and long response time. In contrast, a novel uorescent sensor for the quantication of nitrite was designed based on the ''covalent assembly'' principle by Yu in 2021.…”

A novel highly specific colorimetric fluorescent probe for the detection of nitrite in aqueous solution

“…The maximum contaminant level of NO 2 − ions is 3 ppm (65.1 μM) in drinking water, which is legislated by the World Health Organization. [ 13–15 ] Therefore, it has become the focus of scholars at home and abroad to develop an effective method for determining NO 2 − ions in the environment.…”

“…However, they often follow tedious procedure, and suffer from poor water‐solubility and high detection limit. [ 13,28,29 ]…”