Characterization of the changes in polarity of natural organic matter using solid-phase extraction: introducing the NOM polarity rapid assessment method (NOM-PRAM)

Autor:	K. Kozawa, Irwin H. Suffet, Fernando L. Rosario-Ortiz, H.N. Al-Samarrai, Christopher J. Gabelich, Fredrick W. Gerringer
Rok vydání:	2004
Předmět:	Matrix (chemical analysis) chemistry.chemical_classification Cartridge Chromatography Aqueous solution chemistry Polarity (physics) Extraction (chemistry) Analytical chemistry Organic matter Water treatment Solid phase extraction Water Science and Technology
Zdroj:	Water Supply. 4:11-18
ISSN:	1607-0798 1606-9749
DOI:	10.2166/ws.2004.0055
Popis:	A new technique has been developed to quickly monitor the changes in polarity of aqueous natural organic matter (NOM) using solid-phase extraction (SPE) cartridges. This paper introduces the NOM polarity rapid assessment method (PRAM). The PRAM technique characterizes changes in NOM polarity by monitoring the breakthrough curves from different SPE cartridges at UV254. The SPE cartridges used in this study include a wide range of polarity from non-polar C-18 materials to anion exchangers. Each individual cartridge run takes 10 minutes and requires about 15 ml of sample. The collected water sample matrix is not changed, i.e. all PRAM analyses were done under ambient conditions on the original sample. Polarity evaluation is completed without the sample being exposed to changes in sample conditions, such as pH, solvent extraction, sequential evaporations or freeze-drying. This technique was able to monitor the weekly changes in NOM polarity entering a water treatment plant and compares the effects of different water treatment processes on this material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ed7bc743e907e3ad402250056e2b5790 https://doi.org/10.2166/ws.2004.0055 Zobrazit plný text záznamu