Heavy Metal Residue (As, Cd, Hg, and Pb) in Hen Eggs after Applying Different Cooking Methods

Table 1

Conditions of ICP-MS apparatus for determining As, Pb, Cd, and Hg in hen eggs.

Parameter	Value
Radiofrequency	1200 W (40 Mhz)
Plasma gas (argon) flow	16 l/min
Nebulizer gas (argon) flow	1 l/min
Read delay and analysis speeding	30 s
Wash	60 s
Wash speeding	30 rpm
Dwell time	50 ms
Resulting/amu 10% peak	0.7
Integration time	3.5
Linear working (total element) (ppb)	0.053
Precision %RSD	1.3
Addition/recovery	93-103
Repetition	3
Limit of detection (LOD) (μg kg^-1)	0.00033
Limit of quantification (LOQ) (μg kg^-1)	0.001