The Scientific World Journal / 2012 / Article / Tab 1

Research Article

Deriving Freshwater Quality Criteria for Iron, Lead, Nickel, and Zinc for Protection of Aquatic Life in Malaysia

Table 1

Acute toxicity of Fe, Pb, Ni, and Zn to eight freshwater species (mean with 95% confidence limits).

MetalRankSpecies96 h-LC50 (mg L−1)

1N. elinguis 0.12 (0.06–0.17)
2S. major0.28 (n.a)
3D. melanostictus0.4 (n.a)
Iron4C. javanus0.62 (0.004–1.25)
5P. reticulata 1.46 (0.47–2.57)
6R. sumatrana1.71 (0.035–4.46)
7M. lanchesteri 3.42 (0.35–32)
8M. tuberculata8.49 (1.58–15.25)

1M. lanchesteri0.035 (0.024–0.051)
2S. major0.53 (0.31–0.9)
3N. elinguis0.58 (n.a)
Lead4R. sumatrana0.63 (0.22–1.77)
5C. javanus0.72 (0.34–1.16)
6D. melanostictus1.5 (0.4–2.2)
7P. reticulata1.99 (0.69–4.14)
8M. tuberculata6.82 (2.89–12.67)

1N. elinguis0.64 (0.56–0.69)
2R. sumatrana0.83 (0.30–1.56)
3C. javanus5.32 (2.79–9.21)
Nickel4M. lanchesteri8.1 (2.1–37.3)
5M. tuberculata8.46 (3.53–14.02)
6D. melanostictus8.8 (5–17)
7P. reticulata15.62 (10.77–20.56)
8S. major19.74 (14.77–26.38)

1R. sumatrana0.46 (0.23–0.89)
2M. lanchesteri0.52 (0.33–0.88)
3N. elinguis0.91 (0.79–1.13)
Zinc4P. reticulata1.05 (0.37–2.15)
5S. major1.19 (0.95–1.48)
6M. tuberculata3.9 (1.81–6.67)
7D. melanostictus4.2 (2.1–7.5)
8C. javanus5.57 (3.54–29.42)

n.a—not available: values could not be calculated from probit software.

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