Back to Search
Start Over
N-compounds speciation analysis in environmental samples using ultrasound-assisted solid–liquid extraction and non-chromatographic techniques.
- Source :
- Environmental Monitoring & Assessment; May2021, Vol. 193 Issue 5, p1-14, 14p
- Publication Year :
- 2021
-
Abstract
- A fast, efficient, and non-chromatographic method was presented in this study for nitrite, nitrate, and p-nitrophenol (N-compounds) extraction and speciation analysis of environmental samples. By applying ultrasound-assisted solid–liquid extraction (USLE), analytes were efficiently extracted from water, soil, or sediment collected in areas of environmental disaster. These analytes were selectively converted to NO<subscript>(g)</subscript> through UV photolysis (NO<subscript>3</subscript><superscript>−</superscript>), H<subscript>2</subscript>O<subscript>2</subscript>/UV photocatalysis (PNP), and direct conversion (NO<subscript>2</subscript><superscript>−</superscript>). Following conversion, NO<subscript>(g)</subscript> was separated from the liquid phase and determined by high-resolution continuum source molecular absorption spectrometry (HR-CS MAS). The LODs obtained were 0.097 ± 0.004 mg L<superscript>−1</superscript> for nitrite, 0.119 ± 0.004 mg L<superscript>−1</superscript> for nitrate, and 0.090 ± 0.006 mg L<superscript>−1</superscript> for p-nitrophenol. On applying this speciation method to environmental samples, concentrations were found to be up to 0.99 ± 0.03 mg L<superscript>−1</superscript> (NO<subscript>2</subscript><superscript>−</superscript>), 49.80 ± 2.5 mg L<superscript>−1</superscript> (NO<subscript>3</subscript><superscript>−</superscript>), and 0.10 ± 0.02 mg L<superscript>−1</superscript> (PNP). Finally, addition/recovery study of real water, soil, and sediment samples showed 101 ± 2% recovery for NO<subscript>2</subscript><superscript>−</superscript>, 100 ± 1% for NO<subscript>3</subscript><superscript>−</superscript>, and 96 ± 5% for PNP. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01676369
- Volume :
- 193
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Environmental Monitoring & Assessment
- Publication Type :
- Academic Journal
- Accession number :
- 150430076
- Full Text :
- https://doi.org/10.1007/s10661-021-09088-w