Samples

Al(III) added

(µg L⁻¹)

Proposed methodology

ETAAS

RE%^b

Al(III) found ± SD

(µg L⁻¹)

Recovery

(%, n = 3)

Real Al(III) contents

(µg L⁻¹)^a

Al(III) found ± SD

(µg L⁻¹)

1

-

9.88 ± 1.47

-

-

-

24.95

31.88 ± 1.42

70.14

7.41

49.91

61.26 ± 1.49

114.87

2

-

30.00 ± 1.54

-

33.4 ± 0.02

10.17

24.95

60.66 ± 1.53

119.03

22.5

49.91

77.05 ± 0.97

90.47

3

-

62.90 ± 1.74

-

-

-

24.95

92.96 ± 0.70

108.12

47.18

49.91

113.23 ± 1.27

100.66

4

-

87.42 ± 1.98

-

-

-

24.95

111.82 ± 1.86

99.37

65.56

49.91

137.59 ± 2.22

99.99

5

-

93.21 ± 1.81

-

98.8 ± 0.08

5.65

24.95

113.91 ± 1.47

95.44

69.91

49.91

145.24 ± 2.14

102.27

6

-

130.69 ± 2.20

-

-

-

24.95

156.38 ± 2.88

100.56

98.02

49.91

180.22 ± 2.87

99.7

7

-

160.73 ± 1.11

-

163.7 ± 0.02

1.81

24.95

186.28 ± 1.37

100.37

120.55

49.91

210.34 ± 2.67

99.81