Research Article

Minimizing Chloride Interferences Produced by Calcium Chloride in the Determination of Cd by Graphite Furnace Atomic Absorption Spectrometry

Table 1

Furnace temperature program for Cd determination.

Furnace program stepTemperature (°C)aHold time
(s)
Ramp rate
(°C s−1)
Argon gas flow rate
(L min−1)

Drying-1120 (150)b5241
Drying-2250 (250)b5261
Pyrolysis-1300 (500)b5101
Pyrolysis-2300 (500)b3*00
Atomisation1800 (2200)b6*34000 (read)
Cleaning2300 (2400)b334001

aTemperature program used in absence of chemical modifier.
bTemperature program used in presence of chemical modifier.
*The high-sensitivity mode was applied and the argon flow was stopped.