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Dissolved Nitrate Articles & Analysis
45 articles found
These sensors measure factors such as pH, turbidity, dissolved oxygen, chlorine, nitrates, and even harmful microorganisms. ...
Every 10 kilometers he collects data on dissolved oxygen, pH, ORP, temperature and nitrate, with a separate device used to measure turbidity. ...
Using 15N stable isotope as a tracer to quantify N transformation rates in isotope-enrichment experiments improves understanding of the N cycle in various ecosystems. However, measuring 15N-nitrate (15NO3–) in small volumes of water for these experiments is a major challenge due to the inconvenience of preparing samples by traditional techniques. Lin et al. (2021) developed ...
Result The retrofits have allowed the city to more tightly control dissolved oxygen and nitrate recycles and reduce total nitrogen to near the limits of ...
Across the state of Iowa, for instance, nitrates are such an ongoing threat to water quality that new wastewater treatment infrastructure is needed to fully address it. ...
Across the state of Iowa, for instance, nitrates are such an ongoing threat to water quality that new wastewater treatment infrastructure is needed to fully address it. ...
Chemical and photophysiological impact of terrestrially-derived dissolved organic matter on nitrate uptake in the coastal western Arctic. ...
[…] Denitrification is the conversion of nitrate (NO3) to nitrogen gas (N2) […] Heterotrophic bacteria utilize the nitrate (NO3) as an oxygen source under anoxic conditions to break down organic substances. ...
These “hotspots” were marked by fine-textured soils with a high level of organic matter, as well as a high moisture content. These, as well as dissolved carbon content, worked to remove nitrates from streams.” Bank slope and height, vegetation and soil type, and time of year explained 40% of the buffer zone’s nitrate ...
Statistical tests showed that only three parameters (total dissolved solids, nitrate and chemical oxygen demand) have no significant difference between cluster groups. ...
The highest saxitoxin concentrations were 0.20 μg·L−1, which occurred in the samples with the highest densities of C. raciborskii (maximum of 4.3 × 104 org·mL−1) and the highest concentration of dissolved nutrients (nitrate from 0.2 to 0.8 μg·L−1, ortophosphate from 0.3 to 8.5 μg·L−1). ...
Physico-chemical parameters of the water were within target water quality range (TWQR) for livestock farming. For irrigational use, total dissolved solids and nitrates were not within the TWQR. Yeast levels ranged between 27 ± 10 and 2,573 ± 306 cfu/L. ...
However, the magnitude of the difference depends on the bulk dissolved oxygen, chemical oxygen demand, and nitrate concentrations, as well as the biofilm thickness. ...
Twenty-three water quality parameters were analyzed, including pH, total dissolved solids, turbidity, nitrate, nitrite, ammonia, hardness, arsenic, iron, cadmium, nickel, chromium, manganese, mercury, selenium, lead, zinc, Escherichia coli, and total coliform. ...
In the present investigation, ten groundwater samples were collected from various parts of Seraidi municipality area located in the north-east of Algeria, Physico-chemical parameters such as pH, temperature, dissolved oxygen, phosphates, nitrates, turbidity and fecal coliforms were analyzed. ...
Bacteria dominate in an ecosystem as primary decomposers because they can utilize dissolved organic substrates at low concentrations, assimilate dissolved inorganic nutrients such as nitrate and ahosphorus, and at the same time decompose nutrient-poor plant tissue (Fenchel and Jorgensen, 1977). ...
Redox conditions are an important regulator of aqueous biogeochemistry and knowledge about them is crucial for an understanding of the fate and occurrence of nitrates, emerging substances, and organic compounds in shallow groundwater. ...
The biological and physical parameters analyzed were total dissolved nitrogen (TDN), nitrate (NO3-N), nitrite (NO2-N), ammonia (NH3-N), total dissolved phosphorus (TDP), dissolved organic carbon (DOC), turbidity, chlorophyll-a and algal cells number. ...
Long-term continuous treatments of synthetic groundwater containing 15.06 ± 0.55 mg-N/L nitrate were conducted using an in situ denitrification and oxidation process under different operating conditions. In the experiments, electrolytic hydrogen and oxygen were injected upstream and downstream in a laboratory-scale aquifer, respectively, and measurements were made for ...
The aim of this study was to characterize the efficiency of an intensified process of vertical flow constructed wetland having the following particularities: (i) biological pretreatment by trickling filter, (ii) FeCl3 injection for dissolved phosphorus removal and (iii) succession of different levels of redox conditions along the process line. ...