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|
Species |
Toxicant
Test concs
(m g L-1) |
Test Duration & End point |
NOECd
m g L-1 |
LOECd
m g L-1 |
Toxicity Value
(LC50 or EC50) f |
Total Hardness
mg L-1 CaCO3
|
|
Cladocera
C. dubia |
Cu(II)
{18, 32, 56, 100, 180}a |
48h survival |
<18.0 |
18.0 |
24.0(28.0-21.0) |
59.4 |
|
Cu(II)
{5.6, 10, 18, 32, 56}a |
7d (minimum) survival |
10.0 |
18 |
20.0(24.0-17.0 |
59.4 |
|
7d (minimum) reproduction |
<5.6 |
5.6 |
22.2(24.1-18.5) |
59.4 |
|
Amphipod
P. fluviatilis |
Cu(II)
{10, 18, 32, 56, 100}a |
48h survival |
18.0 |
32.0 |
61.0(72.0-62.0) |
39.2 |
|
Cu(II)
{18, 32, 56, 100}a |
32d survival |
<5.6 |
5.6 |
4.0(2.0-6.0) |
39.2 |
|
32d reproduction |
<5.6 |
5.6 |
9.0** |
39.2 |
a Nominal concentrations.
d NOEC and LOEC were calculated
using one-way analysis of variance (ANOVA), and appropriate USEPA
approved hypothesis testing at a significance level of p < 0.05.
f LC50 and EC50
values were derived from either Probit analysis, trimmed Spearman-Karber
or Linear Interpolation. 95% confidence intervals are given in
parentheses.
** EC50 toxicity curve was incomplete, no confidence
intervals were able to be calculated.
|
Species |
Toxicant
Test concs
(m g L-1) |
Test Duration & End point |
NOEC d
m g L-1 |
LOEC d
m g L-1 |
Toxicity Valuef
(LC50 or EC50) |
|
Cladocera
C. dubia |
Cr(VI)
{10, 18, 32, 56, 100}a |
48h survival |
32 |
56 |
41.0(47.0-36.0) |
|
Cr(VI)
{1.8, 3.2, 5.6, 10, 18}a |
7d min survival |
18.0 |
>18.0 |
>18.0 |
|
7d min reproduction |
5.6 |
10.0 |
9.3** |
|
Amphipod
P. fluviatilis
|
Cr(VI)
{10, 18, 32, 56, 18}a |
48h
survival |
56.0 |
100.0 |
>100 |
|
Cr(VI)
{18, 32, 56, 18}a |
32d
survival |
<18.0 |
18.0 |
9.0** |
| 32
reproduction |
<18.0 |
18.0 |
9.0** |
a Nominal concentrations.
d NOEC and LOEC were calculated
using one-way analysis of variance (ANOVA), and appropriate USEPA
approved hypothesis testing at a significance level of p < 0.05.
f LC50 and EC50
values were derived from either Probit analysis, trimmed Spearman-Karber
or Linear Interpolation. 95% confidence intervals are given in
parentheses.
** EC50 toxicity curve was incomplete, no confidence
intervals were able to be calculated.
|
Species |
Toxicant
Test concs
(m g L-1) |
Test Duration & End point |
NOEC d
m g L-1 |
LOEC d
m g L-1 |
Toxicity Valuef
(LC50 or EC50) |
|
Cladocera
C. dubia |
As(V)
{180, 320, 560, 1800, 3200}a |
48h survival |
560 |
1800 |
1930(2610-1420) |
|
As(V)
{56, 100, 180, 320, 560}a |
7d (minimum) survival |
560 |
>560 |
>560 |
|
7d min reproduction |
320 |
560 |
491** |
|
Amphipod
P. fluviatilis
|
As(V)
{1800 � 18000}a |
48h survival |
1800 |
3200 |
8900(10700-7600) |
|
As(V)
{560 � 5600}a |
32d survival |
<560 |
560 |
481(582-293) |
|
32d reproduction |
560 |
1000 |
232(724-0) |
a Nominal concentrations.
d NOEC and LOEC were calculated
using one-way analysis of variance (ANOVA), and appropriate USEPA
approved hypothesis testing at a significance level of p < 0.05.
f LC50 and EC50
values were derived from either Probit analysis, trimmed Spearman-Karber
or Linear Interpolation. 95% confidence intervals are given in
parentheses.
** EC50 toxicity curve was incomplete, no confidence
intervals were able to be calculated. Copyright
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