. Author manuscript; available in PMC: 2022 Oct 5.

Published in final edited form as: Environ Sci Technol. 2021 Sep 16;55(19):13113–13121. doi: 10.1021/acs.est.1c00937

Table 3:

Mean, standard deviation (S.D.), maximum, minimum and median concentrations (mg/kg) corresponding to each metal measured in toenails.

Concentrations	Nickel		Zinc		Arsenic		Selenium		Lead
Concentrations	ICP- MS (mg/kg)	XRF (mg/ kg)	ICP- MS (mg/kg)	XRF (mg/kg)	ICP- MS (mg/kg)	XRF (mg/kg)	ICP- MS (mg/kg)	XRF (mg/kg)	ICP- MS (mg/kg)	XRF (mg/kg)
Mean	163	156	113	105	1.19	0.702	6.54	5.62	1.64	1.44
S.D.	83.9	84.5	90.8	90.7	0.83	0.636	16.6	15.6	0.998	0.971
Median	139	133	102	95.6	1.11	1.04	0.775	0.369	1.40	1.23
Maximum	417	427	893	887	3.80	1.56	92.9	90.2	4.47	3.97
Minimum	31.8	23.9	9.35	BDL¹	0.006	BDL	0.019	BDL	0.285	0.225

^1:

BDL = below detection limit