Effect of solution aging time on stability of colorimetric assay for degradation rate evaluation of porous Si in artificial cerebrospinal fluid

T. Sun, J. Z. An, W. T. Park, T. B. Yee, M. Je

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In order to evaluate the degradation rate of porous Si in artificial cerebrospinal fluid and obtain more accurate results, the effect of solution aging time on the stability of the ammonium molybdate colorimetric assay was investigated. Following the protocol of the colorimetric assay, the blue colored solutions with various silicic acid concentrations were prepared and then aged for different time periods up to 7 h. On the basis of linear regression analyses, the absorbance value of the blue colored solution was directly proportional to the silicic acid concentration. Moreover, the optimal aging time span of the solution maintained until 7 h, depending on the stability of the solution.

Original languageEnglish
Title of host publication2012 International Conference on Engineering Materials, ICEM 2012
Pages306-311
Number of pages6
DOIs
StatePublished - 2013
Event2012 International Conference on Engineering Materials, ICEM 2012 - , Singapore
Duration: 30 Dec 201231 Dec 2012

Publication series

NameAdvanced Materials Research
Volume651
ISSN (Print)1022-6680

Conference

Conference2012 International Conference on Engineering Materials, ICEM 2012
Country/TerritorySingapore
Period30/12/1231/12/12

Keywords

  • Artificial cerebrospinal fluid
  • Colorimetric assay
  • Degradation
  • Porous Si
  • Silicic acid

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