Development of fast analysis methods for extractives in papermaking process waters
A fast analysis method with an online sample enrichment technique for the analysis of resin and fatty acids present in papermaking process waters was developed. This method was based on atmospheric pressure chemical ionization (APCI) and mass spectrometry (MS) for the detection of [M-H]- ions of compounds of interest. The method was applied to the control of the most prevalent resin (dehydroabietic and abietic) and fatty (palmitic, stearic, oleic, and linolenic) acid levels in papermaking process waters. Continuous data on these acids are of practical importance when predicting possible deposit-derived problems in the paper machine. The first part of the study was focused on the development of an online sample enrichment system for the analysis equipment used. The method was partially validated and tested for the selected resin and fatty acids in aqueous media and papermaking process waters. The online sample enrichment step was connected to the analytical system through a standard high-performance liquid chromatography (HPLC) precolumn and time-controlled column switching valves. In the second part, the feasibility of the method developed was tested by means of three different applications: laboratory-scale online sample enrichment studies, enrichment of resin and fatty acids when increasing water reuse, and the development of a faster offline laboratory method with HPLC column separation. The column separation was validated by means of selectivity, repeatability, precision, and limits of detection (LOD). These validation results clearly indicated that the HPLC-APCI-MS method with column separation was applicable for this purpose. The analysis system developed provides a potential tool for monitoring selected resin and fatty acids for many applications of practical importance. It was noticed that measuring only the resin acid concentration level, for example, may offer a possible indirect control method for papermaking. The results also indicated that the fast offline HPLC-APCI-MS technique with column separation of the compounds of interest is a useful alternative to other traditional analysis methods such as gas chromatography (GC). The main benefits of this new method are simplicity of use, absence of the need for multistage sample pretreatment, and rapidity of measurement. ...
PublisherUniversity of Jyväskylä
hartsihapot fatty acids HPLC-MS method validation papermaking process waters mass spectrometry resin acids wood extractives waste waters liquid chromatography paperinvalmistus rasvahapot uudelleenkäyttö ympäristönsuojelu jätevesi kierrätys nestekromatografia validiointi massaspektrometria prosessivedet
MetadataShow full item record
- Väitöskirjat 
Showing items with similar title or keywords.
Occurrence of pharmaceuticals in municipal wastewater treatment plants and receiving surface waters in Central and Southern Finland Lindholm-Lehto, Petra (University of Jyväskylä, 2016)The presence of five selected pharmaceuticals, four anti-inflammatory drugs, diclofenac, ibuprofen, ketoprofen, naproxen, and an antiepileptic drug carbamazepine, was determined at four municipal wastewater treatment plants ...
Sneck, Annika (2017)Tutkielmassa perehdytään nestekromatografian käyttöön lääkeaineanalytiikassa. Korkean erotuskyvyn nestekromatografia (HPLC) on suosittu menetelmä lääkeaineiden analysoinneissa, esimerkiksi pitoisuuksien tai epäpuhtauksien ...
Halmemies, Eelis S.; Brännström, Hanna E.; Nurmi, Juha; Läspä, Otto; Alén, Raimo (MDPI, 2021)Increasing the net value of forestry side-streams has both ecological as well as economic benefits for emerging biorefining industries. Spruce bark represents one of the nature’s abundant sources of valuable extractives. ...
Halmemies, Eelis S.; Alén, Raimo; Hellström, Jarkko; Läspä, Otto; Nurmi, Juha; Hujala, Maija; Brännström, Hanna E. (MDPI AG, 2022)The current practices regarding the procurement chain of forest industry sidestreams, such as conifer bark, do not always lead to optimal conditions for preserving individual chemical compounds. This study investigates the ...
Halmemies, Eelis S.; Brännström, Hanna E.; Karjalainen, Mikko; Nurmi, Juha; Alén, Raimo (Marcel Dekker, 2022)Stumps and knotwood of Norway spruce (Picea abies) are valuable sources of wood extractives. Although lignans from knotwood have already been utilized in value-added products, the behavior and valorization of stump-derived ...