Table 2.
Seasonal variability and contents of lipophilic toxins in shellfish samples from China (µg/kg).
| Seasons | OA | AZA1 | PTX2 | GYM | SPX1 |
|---|---|---|---|---|---|
| Winter (2008.12–2009.2) | |||||
| Content span(µg/kg) | 2.87–32.5 | - | 0.53–16.4 a | 0.28–14.4 a | 0.23–7.45 |
| Median(µg/kg) | 4.89 | - | 3.84 | 0.78 | 0.67 |
| % of samples quantified | 29.8 | - | 14.3 b | 11.9 | 14.3 |
| Sample size | 84.0 | 84.0 | 84.0 | 84.0 | 84.0 |
| Spring (2009.3–2009.5) | |||||
| Content span(µg/kg) | 2.00–37.3 a | 0.18–1.37 | 1.04–11.4 | 0.10-8.11 | 0.21–1.50 |
| Median(µg/kg) | 5.58 | 0.88 | 2.90 | 0.73 | 0.58 |
| % of samples quantified | 36.8 b | 4.60 b | 12.6 | 14.9 | 18.4 b |
| Sample size | 87.0 | 87.0 | 87.0 | 87.0 | 87.0 |
| Summer (2009.6–2009.8) | |||||
| Content span(µg/kg) | 3.12–19.0 | 0.12–4.56 | 1.1–12.4 | 0.13-6.26 | 0.25–8.97 a |
| Median(µg/kg) | 5.07 | 3.41 | 3.21 | 1.22 | 0.57 |
| % of samples quantified | 21.9 | 4.11 | 6.85 | 24.6 b | 15.1 |
| Sample size | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 |
| Autumn (2009.9–2009.11) | |||||
| Content span(µg/kg) | 3.52–7.41 | 5.90 a | 0.64–2.96 | 0.14-2.70 | 6.58 |
| Median(µg/kg) | 4.58 | 2.10 | 1.42 | ||
| % of samples quantified | 6.38 | 2.13 | 6.38 | 4.26 | 2.13 |
| Sample size | 47.0 | 47.0 | 47.0 | 47.0 | 47.0 |
a Means the maximum concentration of each kind of lipophilic shellfish toxins detected during this investigation; b means the highest % of samples quantified of each kind of lipophilic shellfish toxins in this investigation.