Sample

Composition of Mixtures

(µgL⁻¹)

Arsenic/µgL⁻¹

Added

Found^a

(n = 5)

Recovery

±SD^b (%)

A

As^V

1.0

50

0.99

50.00

99 ± 0.51

100 ± 0.00

B

As in A+ Cr^VI (50) + V^V (50) + Fe³ (50) + Ti^IV (50) + EDTA (50)

1.0

50

1.00

50.05

100 ± 0.00

101 ± 0.52

C

As in B + Pb²⁺ (50) + Bi³⁺ (50) + Se^IV (50) + Hg²⁺ (50) + Cu²⁺ (50)

1.0

50

0.98

49.50

98 ± 0. 68

99 ± 0.92

D

As in C+ Sb³⁺ (50) + Ni²⁺ (50) + Ca (50) + Cd (50) + Te^IV (50)

1.0

50

0.98

50.50

98 ± 1.0

101 ± 1.0

E

As in D + Mg (50) + Mn^VII (50) + W^VI (50) + Ba (50) + Ag (50)

1.0

50

1.02

51.00

102.0 ± 0.85

102.0 ± 1.0

F

As in E + Zn (50) + Na (50) + K (50) + Ce^IV (50) + Ce³⁺ (50)

1.0

50

1.05

53.00

105.0 ± 1.5

106.0 ± 1.8