[Direct collection with graphite probe filters and determination of trace cadmium in atmospheric particulate matter by graphite probe furnace atomic absorption spectrometry].
After atmospheric particulate matter was directly collected with graphite probe filters, the trace cadmium in APM was determined by graphite probe furnace atomic absorption spectrometry. The results showed that the absorbance (peak-area mode)and the concentration of cadmium had a excellent linearity in the range of 0-50 microg/L. The characteristic mass and detection limit (3 sigma) were 2.48 and 1.86 pg, respectively. Its relative standard deviation was 2.06% (n = 11). The results of analysis of the National Bureau of standards of America, Standard Reference Material (SRM) No. 1648, Urban Particulate Matter, gave a recovery of 90.15-99.29% with RSD of 4.09%. The method proved to be accurate, sensitive, rapid and simple.
Ge
Y
Y
Department of Chemistry, Hubei University, 430062 Wuhan.
Zhou
L
L
Zhang
B
B
Cai
H
H