Characterising Particulate Organic Nitrogen at A Savannah-Grassland Region in South Africa

Autor: Wanda Booyens, Pieter G. Van Zyl, Johan P. Beukes, Jose Ruiz-Jimenez, Matias Kopperi, Marja-Liisa Riekkola, Ville Vakkari, Miroslav Josipovic, Markku Kulmala, Lauri Laakso

Publikováno v: Atmosphere, Vol 10, Iss 9, p 492 (2019)

Although atmospheric organic N compounds are considered to be important, especially in new particle formation and their contribution to brown carbon, these species are not that well understood. This can be partially attributed to their chemical compl

Externí odkaz: https://doaj.org/article/6c3b86b8b7434e42942f9af838603492

Assessment of polar organic aerosols at a regional background site in southern Africa

Autor: Wanda Booyens, Matias Kopperi, Ville Vakkari, Miroslav Josipovic, Marja-Liisa Riekkola, Jose Ruiz-Jimenez, Johan P. Beukes, Pieter G. van Zyl, Lauri Laakso

A recent paper reported GCxGC-TOFMS analysis used for the first time in southern Africa to tentatively characterise and semi-quantify 1000 organic compounds in aerosols at Welgegund - a regional background atmospheric monitoring station. Ambient pola

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7441eb0da603b8127dbd3f5143c10ab
http://hdl.handle.net/10138/321641

Nontargeted evaluation of the fate of steroids during wastewater treatment by comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry

Autor: Jose Ruiz-Jimenez, Marja-Liisa Riekkola, Matias Kopperi, Jevgeni Parshintsev

Publikováno v: Environmental Science and Pollution Research. 23:17008-17017

Emerging organic contaminants in wastewater are usually analyzed by targeted approaches, and especially estrogens have been the focus of environmental research due to their high hormonal activity. The selection of specific target compounds means, how

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bfcdde31becda764ef3c042102aab68
https://doi.org/10.1007/s11356-016-6800-4

Non-targeted evaluation of selectivity of water-compatible class selective adsorbents for the analysis of steroids in wastewater

Autor: Matias Kopperi, Marja-Liisa Riekkola

Publikováno v: Analytica chimica acta. 920

Selective adsorbents for solid-phase extraction are needed to meet the low concentration requirements of new environmental quality standard directives, especially for the analysis of estrogens in wastewater. In this work, bulk polymerization procedur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd2ae63023e0752f5c81cf73695b3810
https://pubmed.ncbi.nlm.nih.gov/27114222

Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography

Autor: Jan-Henrik Smått, Delphine Bourdin, Giovanni D'Orazio, Matias Kopperi, Salvatore Fanali, Maarit Kivilompolo, Jose Ruiz-Jimenez, Motolani Sakeye, Clara Baños-Pérez, Susanne K. Wiedmer, Marja-Liisa Riekkola

Publikováno v: Journal of chromatography
1218 (2011): 5020–5029. doi:10.1016/j.chroma.2010.12.071
info:cnr-pdr/source/autori:S.K. Wiedmer, G. D'Orazio, J.H. Smatt, D. Bourdin, C. Banos-Perez, M. Sakeye, M. Kivilompolo, M. Kopperi, J. Ruiz-Jimenez, S. Fanali, M.L. Riekkola/titolo:Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography/doi:10.1016%2Fj.chroma.2010.12.071/rivista:Journal of chromatography (Print)/anno:2011/pagina_da:5020/pagina_a:5029/intervallo_pagine:5020–5029/volume:1218
Wiedmer, S K, D'Orazio, G, Smått, J-H, Bourdin, D, Baños-Pérez, C, Sakeye, M, Kivilompolo, M, Kopperi, M, Ruiz-Jiménez, J, Fanali, S & Riekkola, M-L 2011, ' Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography ', Journal of Chromatography A, vol. 1218, no. 30, pp. 5020-5029 . https://doi.org/10.1016/j.chroma.2010.12.071

The need for novel packing materials in both capillary electrochromatography (CEC) and capillary liquid chromatography (CLC) is apparent and the development towards more selective, application-oriented chromatographic phases is under progress world-w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdf7a225d7dc4045e109fe21f2ab0126