QSARs for Predicting Cation Toxicity, Bioconcentration, Biosorption, and Binding - Fundamental QSARs for Metal Ions - page 164

TABLE 5.2 ( Continued )
Chemical Abstract Service Registry Numbers (CASRNs) of Metals and Metal
Ions That Appeared in Table 3 of Walker et al. (2003)

Ion CASRNs for
Metals That
Appeared More
Than 10 Times in
Table 3 of Walker
et al. (2003)

Number of
Times
Appearing in
Table 3 of
Walker
et al. (2003) Metals CASRNs Ions

Tin 7440-31-5 Tin, ion (Sn2+)

Tin, ion (Sn4+)

22541-90-8
22537-50-4

10

Palladium 7440-05-3 8

Cesium 7440-46-2 8

Platinum 7440-06-4 7

Yttrium 7440-65-5 6

Rubidium 7440-17-7 5

Indium 7440-74-6 5

Arsenic 7440-38-2 5

Thallium 7440-28-0 4

Scandium 7440-20-2 4

Antimony 7440-36-0 3

Titanium 7440-32-6 2

Thorium 7440-29-1 2

Rhodium 7440-16-6 2

Niobium 7440-03-1 2

Vanadium 7440-62-2 1

Tungsten 7440-33-7 1

Tantalum 7440-25-7 1

Ruthenium 7440-18-8 1

Osmium 7440-04-2 1

Germanium 7440-56-4 1

Gallium 7440-55-3 1

Gadolinium 7440-54-2 1

Cerium 7440-45-1 1

Source: Appeared in J.D. Walker, M. Enache, and J.C. Dearden. “Quantitative Cationic Activity
Relationships for Predicting Toxicity of Metals.” Environ. Toxicol. Chem . 22 (2003):1916-
1935, T-3.

previously reviewed by Walker et al. (2003), but the QSARs of Lewis et al. (1999) and
Enache et al. (2003) were not discussed by Walker et al. Lewis et al. (1999) used the
intraperitoneal injection dosing data from Venugopal and Luckey (1978) to develop
the QSAR in Table 5.1 to predict the LD 50 value of 30 cations to mice: pT50 = 0.41
E ° + 3.72, r 2 = 0.73, SE = 0.32, p = 0.0001, F = 75.0 and n = 30, where SE is the standard
error, r 2 is the coefficient of determination, F is the variance ratio ( F test), p is the