Table 4.
Mercury concentrations in mussels in 1975 (milligram/kilogram; NEIGAE 1994)
| Species | Segment | n | Age (years) | The adductors | Foot muscles | |
|---|---|---|---|---|---|---|
| Range | Mean | Range | ||||
| Anodonta woodiana woodiana | Wujiazhan | 12 | 3–9 | 0.480–1.400 | 1.05 | 0.440–1.021 |
| Zhaoyuan | 22 | 6–10 | 0.410–1.301 | 0.859 | 0.150–0.680 | |
| Linjiang | 10 | 6–9 | 0.360–1.202 | 0.830 | 0.170–1.000 | |
| Cristaria plicata | Wujiazhan | 13 | 3–8 | 0.380–1.401 | 0.796 | 0.150–0.820 |
| Zhaoyuan | 9 | 7–8 | 0.488–0.932 | 0.671 | 0.152–0.776 | |
| Linjiang | 4 | 3–6 | 0.520–1.004 | 0.718 | 0.440–0.490 | |
| Lanceolaria grayana | Wujiazhan | 3 | 6–8 | 0.380–0.500 | 0.423 | 0.258–0.685 |
| Unio douglasiae | Wujiazhan | 10 | 3–7 | 0.261–1.090 | 0.501 | 0.101–0.510 |