Table 6.

Mn and Ni (mg/kg) concentrations in hair in the vicinity of mining areas in the selected countries

Country	n	Age	Mn median	Mn mean	Mn range	Ni median	Ni mean	Ni range
Portugala	39	15–46
S.Domingos	20			2.61 ± 1.04	0.022–19.62
Corte do Pinto	9			2.99 ± 1.07	0.056–12.48
Santana de Cambas	10			10.81 ± 3.42	0.023–35.48
Zambiab	na	11–40
Mugala				16.3 ± 2.3	3.9–44.0		1.3 ± 0.23	0.21–6.06
Italyc		11–14
Iglesias and Sant'Antioco, Sardinia			0.31			0.22
Russiad	128	7–14
Ishmurzino	33		1.09	1.43 ± 0.51	0.61–3.43	0.18	0.24 ± 0.07	0.15–0.50
Semenovsk	30		1.07	1.21 ± 0.34	0.31–2.65	0.28	0.30 ± 0.06	0.17–0.47
Tubinsk	65		2.34	2.38 ± 0.20	1.64–3.21	0.27	0.45 ± 0.17	0.11–2.06
Finlande	64	15–85
Sotkamo black shale	45	15–84	1.30	2.23 ± 2.28	0.20–11.10	0.50	0.96 ± 1.01	< LQ-6.00
Kaavi black shale	19	28–85	0.91	1.75 ± 2.05	0.31–7.20	0.89	1.72 ± 2.70	< LQ-12.31
Reference intervalf	Mn 0.20–2.00, Ni < 1.4

^aPereira et al. 2004

^bNakaona et al. 2020

^cTamburo et al. 2016

^dSemenova et al. 2018

^epresent study

^fBiolab Medical Unit 2012