Table 6: Repeated results under different salinities.

numberNa+ 500 mg⋅L−1Na+ 5000 mg⋅L−1Na+ 50000 mg⋅L−1
By ICP-OESBy ICP-MSBy ICP-OESBy ICP-MSBy ICP-OESBy ICP-MS

14.4174.3744.2314.5004.3874.407
24.1654.3574.4084.3964.2084.385
34.3634.2464.3364.6264.5474.677
44.2554.3344.2494.4134.2274.743
54.4254.2754.4384.3694.4684.646
64.4374.3854.3654.3254.5564.458
average value
(mg⋅L−1)
4.3444.3294.3384.4384.4404.553
SD0.110.060.080.110.150.15
RSD (%)2.51.41.82.53.43.3