Assertion: total arsenic | /r/HasProperty | determined by calibration
Facets:
value: against standards
type: OTHER
Source sentences:
text: Larsen and Stürup  point out the potential for systematic error when total arsenic is determined by calibration against standards containing arsenic in a species different from that of the analyte, but indicate that this should not be a problem for speciation analysis as “quantification is carried out against standard curves prepared from each arsenic species individually, whereby this possible systematic error has been eliminated.