Sample

ID

Sample Source

Arsenic/mgL⁻¹

Proposed Method

(n = 5)

Sample

Kit

ICP-OES

(n = 5)

AHG-AAS

(n = 5)

Found^a

RSD^b (%)

Found^a

RSD^b (%)

Found^a

RSD^b (%)

1

Tap water

0.055

0.5

0.00

0.048

0.8

0.04

0.06

2

Well water

0.025

0.1

0.00

0.032

0.5

0.023

0.5

3

Shallow tube-well water^c

1.15

1.0

1.0

1.05

1.2

1.11

1.1

4

Shallow tube-well water^c

1.05

0.8

0.5

1.10

1.5

1.12

1.3

5

Shallow tube-well water^c

0.85

0.6

0.5

1.0

0.9

1.95

0.5

6

Shallow tube-well water^d

1.90

1.0

2.0

1.85

1.5

1.88

1.2

7

Shallow tube-well water^d

1.12

1.0

1.2

1.20

1.1

1.15

1.5

8

Shallow tube-well water^d

0.52

1.0

0.5

0.58

1.2

0.60

1.2

9

Shallow tube-well water^d

0.05

1.1

0.05

0.03

0.5

0.05

1.0

10

Shallow tube-well water^d

2.55

1.5

2.2

2.24

1.5

2.58

1.5

11

Shallow tube-well water^d

0.03

0.5

0.00

0.05

0.6

0.04

0.5

12

Shallow tube-well water^d

3.35

1.5

3.0

3.40

1.6

3.40

1.8

13

Shallow tube-well water^d

0.03

0.00

0.00

0.00

0.00

0.00

0.00

14

Shallow tube-well water^d

0.82

0.5

0.5

0.85

0.6

0.88

0.8

15

Shallow tube-well water^d

0.04

0.8

0.00

0.00

0.00

0.03

0.5

16

Shallow tube-well water^e

1.45

1.0

1.50

1.48

1.5

1.49

0.7

17

Shallow tube-well water^e

1.25

1.0

1.0

1.35

1.0

1.30

0.8

18

Shallow tube-well water^e

0.005

0.01

0.60

0.00

0.00

0.00

0.00

19

Shallow tube-well water^e

0.79

0.5

0.5

0.75

0.8

0.82

0.7

20

Shallow tube-well water^e

0.88

1.0

0.5

0.83

0.9

0.88

0.95

21

Shallow tube-well water^e

0.56

0.5

0.5

0.83

0.8

0.61

0.5

22

Shallow tube-well water^e

1.18

1.0

1.0

1.25

1.1

1.20

1.0

23

Shallow tube-well water^e

0.05

0.5

0.00

0.56

1.2

0.58

1.0

24

Shallow tube-well water^e

0.88

1.0

0.5

0.91

1.5

0.87

1.0

25

Shallow tube-well water^e

0.06

0.5

0.00

0.06

0.8

0.08

0.8