Speciation of nitrite, nitrate and p-nitrophenol by photochemical vapor generation of NO using High-Resolution Continuum Source Molecular Absorption Spectrometry

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

“…A high NO3concentration in surface water increases algal growth, causes eutrophication and extinction of aquatic life [2,65]. Vegetables, meat and drinking water are vectors for both NO3and NO2uptake by humans and animals.…”

“…NO2is considerably more toxic than NO3and causes respiratory tissue hypoxia and cell failure. In light of this, the European Food Safety Authority (EFSA) has set the MPL of 10 -500 mg/kg and 50 -175 mg/kg for NO3and NO2 -, respectively for different types of food [65]. Rajmohan el al.…”

“…Multiple solutions to address the problem of nitrate removal and reduction exist. As stated above, nitrate is a severe environmental problem [1,2,13,15,65,67] and there is thus a need to effectively treat water contaminated with nitrate. These developments and approaches have been reviewed [99][100][101][102][103][104][105][106][107] and we will thus focus on a series of examples to illustrate the breadth of these approaches.…”

Quo vadishigh-resolution continuum source atomic/molecular absorption spectrometry?

“…This is a challenge when aiming at bulk analysis, but it can be transformed into an advantage to perform some speciation studies. Two recent articles have reported on the determination of nitrite, nitrate, and pnitrophenol 60 and of free and total sulfur (IV) 61 via the selective formation of volatile species after proper sample treatment and the monitoring of NO and SO 2 , respectively, using HR CS MAS with a quartz vaporizer in both cases.…”

Breaking the boundaries in spectrometry. Molecular analysis with atomic spectrometric techniques

“…potentially enabling the separate determination of both species, although most speciation approaches based on HR CS MAS require different sample preparation or separation strategies[93][94][95].In the field of atomic spectrometry, ICP-MS is the most powerful technique for ultra-trace elemental and isotopic analysis for a large variety of sample types. When compared to other analytical techniques, ICP-MS offers several advantages, such as the low limits of detection attainable (down to the ng L -1 level), wide linear dynamic range (up to 10 orders of magnitude), high sample throughput and multi-element capabilities.…”