Potentially toxic element (PTE) levels in maize, soil, and irrigation water and health risks through maize consumption in northern Ningxia, China

Table 2 Exposure factors of the inhabitants by gender and age groups (mean ± SD)

	n (person)	Body weight (kg)	Daily intake of maize (g/day)	Exposure frequency (day/year)
All	103	54.60 ± 18.56	161.13 ± 97.16	15.50 ± 8.45
Male	50	58.45 ± 18.28	160.20 ± 96.27	14.34 ± 7.47
Female	53	50.67 ± 18.19	162.08 ± 99.06	16.67 ± 9.28
< 20	26	30.92 ± 15.37	118.46 ± 83.03	17.81 ± 8.75
20 ~ 40	35	62.55 ± 10.73	186.37 ± 95.42	14.06 ± 6.13
40 ~ 60	27	65.78 ± 7.68	181.48 ± 105.75	17.11 ± 10.11

ISSN: 1471-2458