Table 2. ICP-MS analytical conditions for heavy metal analysis

ICP-MS
Instrument NexION 2000, PerkinElmer
RF plasma power 1,600 W
Nebulizer argon flow rate 1.12 L/min
Auxiliary argon flow rate 1.20 L/min
Detector mode Pulse counting
Replicate integration 3
Scan mode Peak hopping
Dwell time 50 ms
Monitored isotopes 208Pb, 111Cd, 75As
Gas Argon