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Determination of anions with an on-line capillary electrophoresis method; Anionien on-line maeaeritys kapillaarielektroforeesilla - MPKT 10

Abstract

The aim of the study was to set-up an on-line capillary electrophoresis method for determination of anions in process waters of pulp and paper industry with exporting the results to the process control system of the mill. The quantification is important, since it will give information about the possible causes of precipitation. In recent years, the capillary electrophoresis (CE) due to its high separation efficiency has been shown as a method to take into consideration when analyzing chemical species ranging from small inorganic anions to different macromolecules. Many compounds are not easily detected in their native state, why analysis methods must be developed to improve their detection. Especially, small inorganic and organic anions which do not have chromophores are not sensitive enough for direct-UV detection. In such analyses the anions are mostly detected with indirect-UV technique. Capillary electrophoresis instruments are used to analyze samples in off-line, which seldom represent the situation in process. Therefore, on-line instrument technology with autoanalyzing settings will be needed in quality control. The development of a fully automatic capillary electrophoresis system is underway in co-operation with KCL (The Finnish Pulp and Paper Research Institute). In our research, we have first concentrated on the determination of sulphate  More>>
Authors:
Siren, H; Saerme, T; Kotiaho, T; Hiissa, T; Savolahti, P; Komppa, V [1] 
  1. VTT Chemical Technology, Espoo (Finland)
Publication Date:
Dec 31, 1998
Product Type:
Technical Report
Report Number:
NEI-FI-362
Reference Number:
SCA: 320303; 400102; PA: FI-99:003388; SN: 99002156296
Resource Relation:
Other Information: PBD: 1998; Related Information: Is Part Of CACTUS technology programme. Yearbook 1998; Alakangas, E. [ed.]; PB: 300 p.
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 40 CHEMISTRY; PAPER INDUSTRY; PAPER; PRODUCTION; WATER; ANIONS; CAPILLARIES; ELECTROPHORESIS; QUANTITATIVE CHEMICAL ANALYSIS; SULFATES
OSTI ID:
703390
Research Organizations:
VTT Energy, Jyvaeskylae (Finland)
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ON: DE99771568; TRN: FI9903388
Availability:
OSTI as DE99771568
Submitting Site:
FI
Size:
pp. 151-155
Announcement Date:

Citation Formats

Siren, H, Saerme, T, Kotiaho, T, Hiissa, T, Savolahti, P, and Komppa, V. Determination of anions with an on-line capillary electrophoresis method; Anionien on-line maeaeritys kapillaarielektroforeesilla - MPKT 10. Finland: N. p., 1998. Web.
Siren, H, Saerme, T, Kotiaho, T, Hiissa, T, Savolahti, P, & Komppa, V. Determination of anions with an on-line capillary electrophoresis method; Anionien on-line maeaeritys kapillaarielektroforeesilla - MPKT 10. Finland.
Siren, H, Saerme, T, Kotiaho, T, Hiissa, T, Savolahti, P, and Komppa, V. 1998. "Determination of anions with an on-line capillary electrophoresis method; Anionien on-line maeaeritys kapillaarielektroforeesilla - MPKT 10." Finland.
@misc{etde_703390,
title = {Determination of anions with an on-line capillary electrophoresis method; Anionien on-line maeaeritys kapillaarielektroforeesilla - MPKT 10}
author = {Siren, H, Saerme, T, Kotiaho, T, Hiissa, T, Savolahti, P, and Komppa, V}
abstractNote = {The aim of the study was to set-up an on-line capillary electrophoresis method for determination of anions in process waters of pulp and paper industry with exporting the results to the process control system of the mill. The quantification is important, since it will give information about the possible causes of precipitation. In recent years, the capillary electrophoresis (CE) due to its high separation efficiency has been shown as a method to take into consideration when analyzing chemical species ranging from small inorganic anions to different macromolecules. Many compounds are not easily detected in their native state, why analysis methods must be developed to improve their detection. Especially, small inorganic and organic anions which do not have chromophores are not sensitive enough for direct-UV detection. In such analyses the anions are mostly detected with indirect-UV technique. Capillary electrophoresis instruments are used to analyze samples in off-line, which seldom represent the situation in process. Therefore, on-line instrument technology with autoanalyzing settings will be needed in quality control. The development of a fully automatic capillary electrophoresis system is underway in co-operation with KCL (The Finnish Pulp and Paper Research Institute). In our research, we have first concentrated on the determination of sulphate in waters of paper industry. The method used for detection of sulphate is based on indirect-UV detection with CE, where the background electrolyte (BGE) is an absorbing mixture of secondary amines. The whole procedure for quantification of sulphate is performed within 15 minutes, after which a new sample is analyzed automatically. The only sample pretreatment is filtration, which is necessary before analysis. The concentrations of sulphate in process waters tested were between 300 and 800 ppm. Our tests show that a simultaneous determination of chloride, sulphate, nitrate, nitrite, sulphite, carbonate and oxalate is also possible. (orig.)}
place = {Finland}
year = {1998}
month = {Dec}
}