Measurement of VFA in anaerobic digestion: The five-point titration method revisited

TY - JOUR

T1 - Measurement of VFA in anaerobic digestion

T2 - The five-point titration method revisited

AU - Lahav, O.

AU - Loewenthal, R. E.

PY - 2000/7

Y1 - 2000/7

N2 - The 5-point titration method proposed by Moosbrugger et al. (1993) provides a cheap and rapid means for measuring inter alia short-chain volatile fatty acids. However, output from the analysis requires invoking a 'systematic pH error'. The authors ascribed this to either residual liquid junction potential effects or pH calibration errors. However, from a scientific standpoint this detracts from confidence in the method. In this paper, it is shown that Moosbrugger et al's 'systematic pH error' is an artefact of the numerical techniques employed in their analysis. An alternative numerical approach is presented which also gives excellent results, without invoking the pH error affect.

AB - The 5-point titration method proposed by Moosbrugger et al. (1993) provides a cheap and rapid means for measuring inter alia short-chain volatile fatty acids. However, output from the analysis requires invoking a 'systematic pH error'. The authors ascribed this to either residual liquid junction potential effects or pH calibration errors. However, from a scientific standpoint this detracts from confidence in the method. In this paper, it is shown that Moosbrugger et al's 'systematic pH error' is an artefact of the numerical techniques employed in their analysis. An alternative numerical approach is presented which also gives excellent results, without invoking the pH error affect.

UR - http://www.scopus.com/inward/record.url?scp=0033859114&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:0033859114

VL - 26

SP - 389

EP - 392

JO - Water S.A.

JF - Water S.A.

SN - 0378-4738

IS - 3

ER -