Multivariate evaluation of factors influencing the performance of a formic acid biosensor for use in air monitoring

Sandström, K. J. MattiasUmeå universitet,Yrkesmedicin,Programme for Chemical Exposure Assessment, National Institute for Working Life, Umeå and Cranfield Biotechnology Centre, Cranfield University, Silsoe, UK,Natl Institute Working Life, Programme Chemistry Exposure Assessment, S-90713 Umea, Sweden; Umea University, Department Publ Hlth and Clin Med, S-90185 Umea, Sweden; Cranfield University, Cranfield Biotechnol Centre, Bedford MK45 4DT, England; University Tromso, Fac Science, Department Chemistry, N-9037 Tromso, Norway; (author)

A formic acid biosensor for air monitoring has been evaluated using chemometric methods. Using experimental design eleven factors that could influence the performance of the biosensor were examined. The response matrices consisted of six parameters (steady state currents at three different formic acid concentrations and response rates during changes in formic acid concentrations) describing the performance of the biosensor. The data were evaluated using a combination of principal component analysis (PCA) and multiple linear regression (MLR). To confirm the conclusions from the PCA-MLR partial least squares (PLS) was also used. The most important factor for the biosensor performance was found to be the enzyme concentration. Using the information from the chemometric analyses the optimum operation conditions for the biosensor were determined. The steady state currents were increased by 18-30% and the initial two response rates increased by 47-89% compared with a biosensor that had not been optimised.

Carlson, RNatl Institute Working Life, Programme Chemistry Exposure Assessment, S-90713 Umea, Sweden; Umea University, Department Publ Hlth and Clin Med, S-90185 Umea, Sweden; Cranfield University, Cranfield Biotechnol Centre, Bedford MK45 4DT, England; University Tromso, Fac Science, Department Chemistry, N-9037 Tromso, Norway;,Department of Chemistry, Faculty of Science, University of Tromsø, Tromsø, Norway (author)
Sunesson, ALNatl Institute Working Life, Programme Chemistry Exposure Assessment, S-90713 Umea, Sweden; Umea University, Department Publ Hlth and Clin Med, S-90185 Umea, Sweden; Cranfield University, Cranfield Biotechnol Centre, Bedford MK45 4DT, England; University Tromso, Fac Science, Department Chemistry, N-9037 Tromso, Norway;,Programme for Chemical Exposure Assessment, National Institute for Working Life, Umeå (author)
Levin, Jan-OlofNatl Institute Working Life, Programme Chemistry Exposure Assessment, S-90713 Umea, Sweden; Umea University, Department Publ Hlth and Clin Med, S-90185 Umea, Sweden; Cranfield University, Cranfield Biotechnol Centre, Bedford MK45 4DT, England; University Tromso, Fac Science, Department Chemistry, N-9037 Tromso, Norway;,Programme for Chemical Exposure Assessment, National Institute for Working Life, Umeå(Swepub:umu)jano0008 (author)
Turner, APFCranfield Biotechnology Centre, Cranfield University, Silsoe, UK(Swepub:liu)anttu13 (author)
Umeå universitetYrkesmedicin (creator_code:org_t)

In:The Analyst: Royal Society of Chemistry126:11, s. 2008-20140003-26541364-5528

By the author/editor: Sandström, K. J. ...; Carlson, R; Sunesson, AL; Levin, Jan-Olof; Turner, APF

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Analytical Chemi ...

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