A portable electrochemical microsensor for in-site measurement of dissolved oxygen and hydrogen sulfide in natural water

Study of the effect of temperature, pH, and time on the desorption of H2S.

“…Hydrogen sulphide water contamination can occur in both urban and rural areas, with rural areas being the most affected by the lack of infrastructure to treat and condition water for use (Satapathy et al, 2017). Dissolved H2S, involving a variety of chemical, biological, and biochemical processes in natural water, is an important indicator of natural water quality, and its concentration level varies over time (Yimei et al, 2023), occurs in different concentrations (0.1 to 244 mg/l) where < 20, 20 to 50, 50 to 150 and > 150 mg/L in groundwater can be considered low, medium-low, medium-high and high, respectively (Mukhopadhyay et al, 2006;O'Sullivan et al, 2005). In nature, water could be contaminated by geochemical processes by geothermal and sulphide minerals dissolves (Bondu et al, 2017;Akai et al, 2004).…”

A novel “on–off–on” near-infrared fluorescent probe for Cu2+ and S2− continuous detection based on dicyanoisoflurone derivatives, and its application in bacterial imaging

“…[12][13][14] At the same time, the accumulation of suldes in the body can cause various health problems, such as loss of consciousness, respiratory paralysis, and digestive diseases. In addition, suldes are easily protonated to produce hydrogen sulde, 15 H 2 S plays an important role in the physiological and nervous system, [16][17][18] and a variety of pathological conditions such as diabetes, heart failure, hypertension, asthma, atherosclerosis, and Alzheimer's disease can occur under conditions exposed to high concentrations of H 2 S. 19 Therefore, the design and synthesis of a highly selective probe to detect Cu 2+ and S 2− in environmental and biological samples is of great practical signicance.…”