Abstract: A method was developed for the determination of trace arsenic by
spectrophotometry. The proposed method is rapid, simple, and inexpensive. This
method can be used for sensitive determination of trace arsenic in
environmental samples and especially in air particulates. The results obtained
by this method as a proposed method were compared with those obtained by
hydride generation atomic absorption spectrometry as a popular reported method
for the determination of arsenic and an excellent agreement was found between
them. The method was also used for determination of arsenic associated with
airborne particulate matter and diesel exhaust particulates. The results showed
that considerable amount of arsenic are associated with diesel engine
particulates. The variation in concentration of arsenic was also investigated.
The atmospheric concentration of arsenic was different in different sampling
stations was dependent to the traffic density.
Keywords: arsenic, air particulates, diesel exhaust particulates, spectrophotometry