Losses of arsenic during the low temperature ashing of atmospheric particulate samples

Assessment of Arsenic Losses during Ashing: A Comparison of Two Methods Applied to Atmospheric Participates

“…1 Both these data and the others do agree, however, in that neutron activation generally gives the higher result.…”

“…This recommendation was a result of an experience of significant losses of arsenic even when low power levels were used in the low temperature asher. 1 These conclusions were further complicated by experience which indicated the need to control matrix effects through the addition of chemicals in order to do adequate flameless atomic absorption analyses for arsenic. 2 The purpose of this paper is to report on analyses by two analytical techniques of atmospheric particulate collected on glass fiber hi-volume sampler filters.…”

Recent Advances In Air Pollution Analysis

“…280 Even low temperature ashing causes loss of arsenic in marine air particulates. 281 Recoveries of 41 to 86% were found, measured against analysis by INAA.…”

A Critical Review

“…Sodium in the presence of sulfate represented the most serious interference in atomic absorption analysis but could be controlled by the addition of magnesium nitrate to the matrix. 127 - 128 An improved sampling technique using graphite sampling cups has been developed for the atomic absorption analysis of metal air particulates, such as lead, cadmium, zinc, and copper, at urban and background levels. 129 Lead in airborne particulates has also been determined by electrothermal atomization coupled with atomic absorption spectroscopy.…”