Skip to main content

Table 3 Descriptive statistics of estimated average daily dose (ADD) of heavy metals for adults and children through drinking water ingestion pathway

From: Health risk assessments of arsenic and toxic heavy metal exposure in drinking water in northeast Iran

Sites/stations (n = 140)

ADD of individuals heavy metals (μg kg−1 day−1)

As

Hg

Pb

Cr

Ni

 

Adult

Child

Adult

Child

Adult

Child

Adult

Child

Adult

Child

North

1

0.005

0.017

ND

ND

0.030

0.093

0.015

0.047

0.044

0.137

2

0.005

0.016

ND

ND

0.015

0.047

0.020

0.064

0.032

0.101

3

0.004

0.014

ND

ND

0.025

0.079

0.035

0.109

0.114

0.360

4

0.010

0.030

ND

ND

0.038

0.120

0.215

0.678

0.044

0.138

5

0.005

0.017

ND

ND

0.017

0.055

0.097

0.307

0.056

0.175

6

0.009

0.028

ND

ND

0.025

0.079

0.130

0.411

0.067

0.212

7

0.007

0.023

ND

ND

0.013

0.041

0.631

1.988

0.016

0.051

South

8

0.006

0.019

ND

ND

0.013

0.041

0.013

0.041

0.028

0.089

9

0.003

0.010

ND

ND

0.019

0.059

0.019

0.060

0.014

0.044

10

0.007

0.023

ND

ND

0.017

0.055

0.137

0.430

0.039

0.123

11

0.008

0.024

ND

ND

0.014

0.043

0.294

0.928

0.007

0.021

12

0.006

0.020

ND

ND

0.011

0.035

0.295

0.930

0.045

0.143

13

0.005

0.016

ND

ND

0.021

0.066

0.229

0.721

0.047

0.147

14

0.006

0.020

ND

ND

0.014

0.044

0.365

1.149

0.013

0.041

East

15

0.004

0.011

ND

ND

0.012

0.037

0.024

0.077

0.010

0.032

16

0.007

0.021

ND

ND

0.018

0.058

0.399

1.257

0.008

0.026

17

0.004

0.014

ND

ND

0.013

0.042

0.830

2.616

0.061

0.193

18

0.010

0.032

ND

ND

0.022

0.070

0.017

0.053

0.065

0.204

19

0.008

0.024

ND

ND

0.018

0.056

0.020

0.064

0.013

0.039

20

0.005

0.017

ND

ND

0.020

0.063

0.021

0.066

0.021

0.065

21

0.006

0.018

ND

ND

0.027

0.084

0.149

0.468

0.031

0.097

West

22

0.006

0.018

0.007

0.023

0.019

0.061

0.086

0.272

0.061

0.193

23

0.014

0.044

ND

ND

0.048

0.150

0.226

0.713

0.469

1.479

24

0.006

0.020

ND

ND

0.011

0.035

0.268

0.845

0.014

0.045

25

0.006

0.020

ND

ND

0.022

0.070

0.011

0.035

0.109

0.343

26

0.008

0.026

ND

ND

0.019

0.060

0.042

0.133

0.106

0.333

27

0.009

0.027

ND

ND

0.023

0.072

0.159

0.501

0.050

0.158

28

0.007

0.023

ND

ND

0.027

0.084

0.199

0.626

0.088

0.278

Center

29

0.008

0.026

ND

ND

0.018

0.057

0.146

0.459

0.053

0.168

30

0.007

0.023

ND

ND

0.019

0.061

0.090

0.284

0.041

0.129

31

0.005

0.016

ND

ND

0.020

0.063

0.057

0.179

0.054

0.170

32

0.006

0.018

0.007

0.023

0.021

0.065

0.281

0.886

0.034

0.107

33

0.005

0.015

ND

ND

0.016

0.051

0.051

0.161

0.057

0.179

34

0.007

0.023

0.004

0.011

0.029

0.091

0.696

2.194

0.130

0.408

35

0.005

0.016

ND

ND

0.023

0.071

0.014

0.045

0.043

0.134

Mean

0.007

0.021

0.001

0.002

0.020

0.064

0.180

0.566

0.060

0.187

Standard deviation

0.002

0.006

0.002

0.005

0.007

0.023

0.199

0.628

0.077

0.242