NOy (total reactive nitrogen) is defined as the sum of NOX plus the compounds produced from the oxidation of NOx which include nitric acid. NOy component species include NO, NO2, NO3, HNO3, N2O5, CH3COO2NO2(PAN), and particulate nitrate.
In most combustion process atmospheric nitrogen reacts with oxygen in high temperature conditions to produce nitrogen oxides (NOx). Total NOx production is the sum of nitrogen monoxide NO and nitrogen dioxide NO2. The emissions of these gases are controlled through setting of emission limit values (ELVs) for power plants.
Chemical purity of water is assessed for a wide variety of different chemicals depending on the type of water and applicable local legislation.
Chemical analysis of water can include testing for nitrogen compounds, dissolved heavy metals, and total and dissolved organic carbon.
Common water monitoring applications include:
Determination of suspended solids in waterusing for example glass fiber filters.
Chemical analyses of for example heavy metals, dissolved organic carbons (DOC), and ions.
Most nitrogenous materials in natural waters tend to be converted to nitrate, so all sources of combined nitrogen, particularly organic nitrogen and ammonia, should be considered as potential nitrate sources. Primary sources of organic nitrates include human sewage and livestock manure, especially from feedlots. The primary inorganic nitrates which may contaminate drinking water are potassium nitrate and ammonium nitrate both of which are widely used as fertilizers. According to the Toxics Release Inventory,...
Now for the first time you can measure ion levels in drinking / tap water, rivers and lakes using one probe and one set of calibration solutions. We have probes specially tailored for environmental testing. Our Environmental probes measure Chloride, Ammonium and Nitrogen or we have a total nitrogen probe measuring Ammonium and Nitrogen. Each probe can be calibrated in our unique calibration solutions allowing you to calibrate all sensors simultaneously and take measurements in drinking or river water. Probes...
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