| In this paper, microwave digestion and inductively coupled plasma-atomic emission spectrometry were used to determine lead, cadmium and arsenic in exhaust gas.Under the optimum conditions, the method has a good linearity in the range from 0 mg/L to 5.00 mg/L.The detection limits of lead, cadmium, arsenic were 0.250 μg/m3, 0.125 μg/m3, 0.375 μg/m3 respectively (in the conditions of 400 L sample volume and 50 mL constant volume).The RSD, which was parallelly determined by blank cartridge for 6 times, is between 2.3% and 10.5%.The spike recovery is 83%~112%.There was no significant difference between the current method and the standard method. |
