Determination of phosphonate chelating agents by capillary electrophoresis

Kaija Luomanperä, Pertti Vastamäki, Heini Saloniemi, Heli Siren

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Synthetic chelating agents have shown increasing demand for many industrial and laboratory scale cleaning and finishing processes. These ligands have been used in a variety of metal speciation applications by complexation of metals with the chelating compounds. Especially phosphonate chelating agents are important compounds in different kind of industrial, environmental, biological, geological and medicine applications. Besides of the uptake of metals the interests in the use of phosphonate compounds are their stability under many industrial and environmental conditions and ability to buffer free metal ion activities in various media. For the investigation of the above mentioned samples and their degradation products capillary electrophoresis has been found a possible alternative due to its efficiency and sensitivity. In this study, we have developed a capillary electrophoresis method for monitoring of decomposition of three commercial complexones such as CDTA, DTPMP and HEDP in elevated temperature of the thermostated bath. Sampling from the bath was performed using certain time interval and the remaining of each compound was measured from the peak area of the electropherogram. In additon, detection limit for each chelating agent was determined without thermal stimulus in the aqueous media.
Original languageEnglish
Title of host publicationITP 2002, 13th International Symposium on Capillary Electroseparation Techniques
Subtitle of host publicationprogram and book of abstracts
Place of PublicationHelsinki
PublisherUniversity of Helsinki
Publication statusPublished - 2002
MoE publication typeB3 Non-refereed article in conference proceedings
Event13th International Symposium on Capillary Electroseparation Techniques - Helsinki, Finland
Duration: 1 Sep 20024 Sep 2002

Conference

Conference13th International Symposium on Capillary Electroseparation Techniques
CountryFinland
CityHelsinki
Period1/09/024/09/02

Fingerprint

Capillary electrophoresis
Organophosphonates
Chelating Agents
Metals
Etidronic Acid
Chelation
Complexation
Medicine
Metal ions
Cleaning
Buffers
Sampling
Ligands
Decomposition
Degradation
Monitoring
Temperature

Keywords

  • capillary electrophoresis
  • chelating agent
  • HEDP
  • DTPMP
  • CDTA

Cite this

Luomanperä, K., Vastamäki, P., Saloniemi, H., & Siren, H. (2002). Determination of phosphonate chelating agents by capillary electrophoresis. In ITP 2002, 13th International Symposium on Capillary Electroseparation Techniques: program and book of abstracts [137] Helsinki: University of Helsinki.
Luomanperä, Kaija ; Vastamäki, Pertti ; Saloniemi, Heini ; Siren, Heli. / Determination of phosphonate chelating agents by capillary electrophoresis. ITP 2002, 13th International Symposium on Capillary Electroseparation Techniques: program and book of abstracts. Helsinki : University of Helsinki, 2002.
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Luomanperä, K, Vastamäki, P, Saloniemi, H & Siren, H 2002, Determination of phosphonate chelating agents by capillary electrophoresis. in ITP 2002, 13th International Symposium on Capillary Electroseparation Techniques: program and book of abstracts., 137, University of Helsinki, Helsinki, 13th International Symposium on Capillary Electroseparation Techniques, Helsinki, Finland, 1/09/02.

Determination of phosphonate chelating agents by capillary electrophoresis. / Luomanperä, Kaija; Vastamäki, Pertti; Saloniemi, Heini; Siren, Heli.

ITP 2002, 13th International Symposium on Capillary Electroseparation Techniques: program and book of abstracts. Helsinki : University of Helsinki, 2002. 137.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Determination of phosphonate chelating agents by capillary electrophoresis

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AU - Vastamäki, Pertti

AU - Saloniemi, Heini

AU - Siren, Heli

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N2 - Synthetic chelating agents have shown increasing demand for many industrial and laboratory scale cleaning and finishing processes. These ligands have been used in a variety of metal speciation applications by complexation of metals with the chelating compounds. Especially phosphonate chelating agents are important compounds in different kind of industrial, environmental, biological, geological and medicine applications. Besides of the uptake of metals the interests in the use of phosphonate compounds are their stability under many industrial and environmental conditions and ability to buffer free metal ion activities in various media. For the investigation of the above mentioned samples and their degradation products capillary electrophoresis has been found a possible alternative due to its efficiency and sensitivity. In this study, we have developed a capillary electrophoresis method for monitoring of decomposition of three commercial complexones such as CDTA, DTPMP and HEDP in elevated temperature of the thermostated bath. Sampling from the bath was performed using certain time interval and the remaining of each compound was measured from the peak area of the electropherogram. In additon, detection limit for each chelating agent was determined without thermal stimulus in the aqueous media.

AB - Synthetic chelating agents have shown increasing demand for many industrial and laboratory scale cleaning and finishing processes. These ligands have been used in a variety of metal speciation applications by complexation of metals with the chelating compounds. Especially phosphonate chelating agents are important compounds in different kind of industrial, environmental, biological, geological and medicine applications. Besides of the uptake of metals the interests in the use of phosphonate compounds are their stability under many industrial and environmental conditions and ability to buffer free metal ion activities in various media. For the investigation of the above mentioned samples and their degradation products capillary electrophoresis has been found a possible alternative due to its efficiency and sensitivity. In this study, we have developed a capillary electrophoresis method for monitoring of decomposition of three commercial complexones such as CDTA, DTPMP and HEDP in elevated temperature of the thermostated bath. Sampling from the bath was performed using certain time interval and the remaining of each compound was measured from the peak area of the electropherogram. In additon, detection limit for each chelating agent was determined without thermal stimulus in the aqueous media.

KW - capillary electrophoresis

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Luomanperä K, Vastamäki P, Saloniemi H, Siren H. Determination of phosphonate chelating agents by capillary electrophoresis. In ITP 2002, 13th International Symposium on Capillary Electroseparation Techniques: program and book of abstracts. Helsinki: University of Helsinki. 2002. 137