Surface corrosion studies on high-purity quartz vessels for digestive sample preparation

Hugo M. Ortner, Silvana Sterkel, Günter Knapp, Brigitte Maichin, Peter Kettisch, Lásló Kocsis, J. Mihály, J. Mink

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

High purity quartz is the most common material for pressure vessels of high pressure digestion systems. Such systems are in worldwide use especially for matrix decomposition and mineralization procedures with either conventional heating or heating in a microwave field. Usually, the quartz vessels are used for hundreds of decompositions and corrosive attack is often already visible with the bare eye. On the other hand it is well known that adsorption as well as leaching phenomena increase with rising surface roughness of a material. This is especially critical in trace and ultratrace work. For the latter such interactions with the vessel wall might even become the limiting factor in ultratrace determinations at the ng/g-level and below. Therefore, systematic morphological and compositional investigations by high resolution scanning electron microscopy were performed on the inner surfaces of decomposition vessels which were subjected to a rising number of digestions under pressure in a Multiwave digestion apparatus. Milk powder was digested with nitric acid for these investigations. Rising corrosive attack was observable but did not lead to severely damaged surfaces. The latter were found on a quartz pressure vessel for an HPA-digestion apparatus which was in intensive use over a long time. Recrystallization was also observable in this case. In addition to investigations by scanning electron microscopy, FT-NIR-Raman spectroscopy was also applied for the surface characterization of the various quartz vessels. The onset of recrystallization is detected much earlier with this method than by morphological changes in the scanning electron microscope (SEM). It appears that the combination of surface morphological and topochemical investigations in the SEM with vibrational spectroscopy is ideal for an optimal characterization of corroded quartz surfaces.

Original languageEnglish
Pages (from-to)229-241
Number of pages13
JournalMikrochimica Acta
Volume137
Issue number3-4
Publication statusPublished - 2001

Fingerprint

Quartz
Corrosion
Caustics
Decomposition
Pressure vessels
Electron microscopes
Scanning
Heating
Nitric Acid
Vibrational spectroscopy
Scanning electron microscopy
High resolution electron microscopy
Powders
Leaching
Raman spectroscopy
Surface roughness
Microwaves
Adsorption

Keywords

  • FT-NIR-Raman
  • High purity quartz
  • Sample digestion
  • Scanning electron microscopy
  • Surface corrosion

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Ortner, H. M., Sterkel, S., Knapp, G., Maichin, B., Kettisch, P., Kocsis, L., ... Mink, J. (2001). Surface corrosion studies on high-purity quartz vessels for digestive sample preparation. Mikrochimica Acta, 137(3-4), 229-241.

Surface corrosion studies on high-purity quartz vessels for digestive sample preparation. / Ortner, Hugo M.; Sterkel, Silvana; Knapp, Günter; Maichin, Brigitte; Kettisch, Peter; Kocsis, Lásló; Mihály, J.; Mink, J.

In: Mikrochimica Acta, Vol. 137, No. 3-4, 2001, p. 229-241.

Research output: Contribution to journalArticle

Ortner, HM, Sterkel, S, Knapp, G, Maichin, B, Kettisch, P, Kocsis, L, Mihály, J & Mink, J 2001, 'Surface corrosion studies on high-purity quartz vessels for digestive sample preparation', Mikrochimica Acta, vol. 137, no. 3-4, pp. 229-241.
Ortner HM, Sterkel S, Knapp G, Maichin B, Kettisch P, Kocsis L et al. Surface corrosion studies on high-purity quartz vessels for digestive sample preparation. Mikrochimica Acta. 2001;137(3-4):229-241.
Ortner, Hugo M. ; Sterkel, Silvana ; Knapp, Günter ; Maichin, Brigitte ; Kettisch, Peter ; Kocsis, Lásló ; Mihály, J. ; Mink, J. / Surface corrosion studies on high-purity quartz vessels for digestive sample preparation. In: Mikrochimica Acta. 2001 ; Vol. 137, No. 3-4. pp. 229-241.
@article{7b7379f444f145c587e5dd4453583c71,
title = "Surface corrosion studies on high-purity quartz vessels for digestive sample preparation",
abstract = "High purity quartz is the most common material for pressure vessels of high pressure digestion systems. Such systems are in worldwide use especially for matrix decomposition and mineralization procedures with either conventional heating or heating in a microwave field. Usually, the quartz vessels are used for hundreds of decompositions and corrosive attack is often already visible with the bare eye. On the other hand it is well known that adsorption as well as leaching phenomena increase with rising surface roughness of a material. This is especially critical in trace and ultratrace work. For the latter such interactions with the vessel wall might even become the limiting factor in ultratrace determinations at the ng/g-level and below. Therefore, systematic morphological and compositional investigations by high resolution scanning electron microscopy were performed on the inner surfaces of decomposition vessels which were subjected to a rising number of digestions under pressure in a Multiwave digestion apparatus. Milk powder was digested with nitric acid for these investigations. Rising corrosive attack was observable but did not lead to severely damaged surfaces. The latter were found on a quartz pressure vessel for an HPA-digestion apparatus which was in intensive use over a long time. Recrystallization was also observable in this case. In addition to investigations by scanning electron microscopy, FT-NIR-Raman spectroscopy was also applied for the surface characterization of the various quartz vessels. The onset of recrystallization is detected much earlier with this method than by morphological changes in the scanning electron microscope (SEM). It appears that the combination of surface morphological and topochemical investigations in the SEM with vibrational spectroscopy is ideal for an optimal characterization of corroded quartz surfaces.",
keywords = "FT-NIR-Raman, High purity quartz, Sample digestion, Scanning electron microscopy, Surface corrosion",
author = "Ortner, {Hugo M.} and Silvana Sterkel and G{\"u}nter Knapp and Brigitte Maichin and Peter Kettisch and L{\'a}sl{\'o} Kocsis and J. Mih{\'a}ly and J. Mink",
year = "2001",
language = "English",
volume = "137",
pages = "229--241",
journal = "Mikrochimica Acta",
issn = "0026-3672",
publisher = "Springer Wien",
number = "3-4",

}

TY - JOUR

T1 - Surface corrosion studies on high-purity quartz vessels for digestive sample preparation

AU - Ortner, Hugo M.

AU - Sterkel, Silvana

AU - Knapp, Günter

AU - Maichin, Brigitte

AU - Kettisch, Peter

AU - Kocsis, Lásló

AU - Mihály, J.

AU - Mink, J.

PY - 2001

Y1 - 2001

N2 - High purity quartz is the most common material for pressure vessels of high pressure digestion systems. Such systems are in worldwide use especially for matrix decomposition and mineralization procedures with either conventional heating or heating in a microwave field. Usually, the quartz vessels are used for hundreds of decompositions and corrosive attack is often already visible with the bare eye. On the other hand it is well known that adsorption as well as leaching phenomena increase with rising surface roughness of a material. This is especially critical in trace and ultratrace work. For the latter such interactions with the vessel wall might even become the limiting factor in ultratrace determinations at the ng/g-level and below. Therefore, systematic morphological and compositional investigations by high resolution scanning electron microscopy were performed on the inner surfaces of decomposition vessels which were subjected to a rising number of digestions under pressure in a Multiwave digestion apparatus. Milk powder was digested with nitric acid for these investigations. Rising corrosive attack was observable but did not lead to severely damaged surfaces. The latter were found on a quartz pressure vessel for an HPA-digestion apparatus which was in intensive use over a long time. Recrystallization was also observable in this case. In addition to investigations by scanning electron microscopy, FT-NIR-Raman spectroscopy was also applied for the surface characterization of the various quartz vessels. The onset of recrystallization is detected much earlier with this method than by morphological changes in the scanning electron microscope (SEM). It appears that the combination of surface morphological and topochemical investigations in the SEM with vibrational spectroscopy is ideal for an optimal characterization of corroded quartz surfaces.

AB - High purity quartz is the most common material for pressure vessels of high pressure digestion systems. Such systems are in worldwide use especially for matrix decomposition and mineralization procedures with either conventional heating or heating in a microwave field. Usually, the quartz vessels are used for hundreds of decompositions and corrosive attack is often already visible with the bare eye. On the other hand it is well known that adsorption as well as leaching phenomena increase with rising surface roughness of a material. This is especially critical in trace and ultratrace work. For the latter such interactions with the vessel wall might even become the limiting factor in ultratrace determinations at the ng/g-level and below. Therefore, systematic morphological and compositional investigations by high resolution scanning electron microscopy were performed on the inner surfaces of decomposition vessels which were subjected to a rising number of digestions under pressure in a Multiwave digestion apparatus. Milk powder was digested with nitric acid for these investigations. Rising corrosive attack was observable but did not lead to severely damaged surfaces. The latter were found on a quartz pressure vessel for an HPA-digestion apparatus which was in intensive use over a long time. Recrystallization was also observable in this case. In addition to investigations by scanning electron microscopy, FT-NIR-Raman spectroscopy was also applied for the surface characterization of the various quartz vessels. The onset of recrystallization is detected much earlier with this method than by morphological changes in the scanning electron microscope (SEM). It appears that the combination of surface morphological and topochemical investigations in the SEM with vibrational spectroscopy is ideal for an optimal characterization of corroded quartz surfaces.

KW - FT-NIR-Raman

KW - High purity quartz

KW - Sample digestion

KW - Scanning electron microscopy

KW - Surface corrosion

UR - http://www.scopus.com/inward/record.url?scp=0038236529&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038236529&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0038236529

VL - 137

SP - 229

EP - 241

JO - Mikrochimica Acta

JF - Mikrochimica Acta

SN - 0026-3672

IS - 3-4

ER -