Quantitative analysis of some important metals and metalloids in tobacco products by inductively coupled plasma-mass spectrometry (ICP-MS)

Table 2 Linear regression data for the calibration curve of each element (n = 3)

Element	Linearity, r	SD_blank^a	I_blank	I_net	LOD
			(CPS)^b	(CPS)^b	(ng/L)
Al	0.999997	1.388	420199.36	26159.85	0.796
Cr	0.999969	0.023	8422.57	45971.71	0.008
Mn	0.999493	0.049	16561.75	63241.03	0.012
Fe	0.999989	0.417	602352.49	59517.32	0.100
Co	0.999830	0.005	661.02	55386.24	0.001
Ni	0.999907	0.038	4008.22	12804.31	0.045
Cu	0.999901	0.023	2908.8	15433.35	0.022
Zn	0.999973	0.058	844.04	9382.04	0.093
As	0.999986	0.069	−1311.36	8012.03	0.129
Se	0.999905	0.255	−42.93	730.7	5.235
Cd	0.999980	0.008	58.33	8784.3	0.014
Pb	0.999935	0.007	37.33	28190.14	0.004

ISSN: 2661-801X