Table 2.
Regression equation, correlation coefficients (R2), limit of detection (LOD) and quantification (LOQ), and matrix effect of the investigated LMTs.
| Toxins | Solvent | M. meretrix | R. philippinarum | C. sinensis | M. meretrix | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Curve | R2 | LOD (μg/kg) | LOQ (μg/kg) | Curve | R2 | LOD (μg/kg) | LOQ (μg/kg) | Ratio a | Curve | R2 | LOD (μg/kg) | LOQ (μg/kg) | Ratio a | Curve | R2 | LOD (μg/kg) | LOQ (μg/kg) | Ratio a | Curve | R2 | LOD (μg/kg) | LOQ (μg/kg) | Ratio a | |
| GYM | y = 122254x + 33042 | 0.9969 | 0.01 | 0.02 | y = 99098x + 5125 | 0.9959 | 0.02 | 0.05 | 0.81 | y = 101305x + 24625 | 0.9987 | 0.03 | 0.10 | 0.83 | y = 99840x + 52125 | 0.9946 | 0.01 | 0.02 | 0.82 | y = 108656x − 24458 | 0.9935 | 0.01 | 0.03 | 0.89 |
| PTX2 | y = 33852x + 27875 | 0.9943 | 0.01 | 0.03 | y = 26711x + 10125 | 0.9975 | 0.10 | 0.34 | 0.79 | y = 30143x − 8254.2 | 0.999 | 0.04 | 0.15 | 0.89 | y = 28520x + 26017 | 0.9955 | 0.03 | 0.10 | 0.84 | y = 27772x + 38250 | 0.9949 | 0.07 | 0.21 | 0.82 |
| SPX1 | y = 34501x + 13083 | 0.9982 | 0.01 | 0.03 | y = 31367x + 139542 | 0.9974 | 0.02 | 0.06 | 0.91 | y = 28724x + 139250 | 0.9936 | 0.23 | 0.76 | 0.83 | y = 33315x + 66542 | 0.9981 | 0.01 | 0.04 | 0.97 | y = 29504x + 188000 | 0.9983 | 0.01 | 0.05 | 0.86 |
| AZA1 | y = 163976x + 18500 | 0.9946 | 0.01 | 0.02 | y = 147377x + 37208 | 0.9946 | 0.02 | 0.08 | 0.90 | y = 138922x + 241000 | 0.9961 | 0.02 | 0.07 | 0.85 | y = 153887x + 57458 | 0.995 | 0.04 | 0.12 | 0.94 | y = 154834x + 8333.3 | 0.9938 | 0.04 | 0.12 | 0.94 |
| AZA2 | y = 41999x + 4795.8 | 0.9948 | 0.01 | 0.02 | y = 39548x + 17808 | 0.9957 | 0.03 | 0.10 | 0.94 | y = 34863x + 20754 | 0.9956 | 0.03 | 0.12 | 0.83 | y = 42323x + 13600 | 0.9963 | 0.03 | 0.09 | 1.01 | y = 39863x − 270.83 | 0.9932 | 0.02 | 0.07 | 0.95 |
| AZA3 | y = 52647x + 5875 | 0.9959 | 0.01 | 0.04 | y = 47014x + 38983 | 0.9944 | 0.06 | 0.19 | 0.89 | y = 42359x + 9708.3 | 0.9996 | 0.03 | 0.11 | 0.80 | y = 43498x − 2700 | 0.9964 | 0.06 | 0.20 | 0.83 | y = 49917x + 31592 | 0.9952 | 0.04 | 0.14 | 0.95 |
| OA | y = 21901x + 5875 | 0.9959 | 0.02 | 0.08 | y = 17703x + 9116.7 | 0.9974 | 0.03 | 0.10 | 0.81 | y = 17482x − 1487.5 | 0.9994 | 0.02 | 0.07 | 0.80 | y = 17613x − 2658.3 | 0.9994 | 0.03 | 0.11 | 0.80 | y = 18871x − 11983 | 0.9988 | 0.02 | 0.06 | 0.86 |
| DTX1 | y = 40048x + 1545.8 | 0.9944 | 0.03 | 0.12 | y = 33291x + 6500 | 0.997 | 0.04 | 0.12 | 0.83 | y = 31723x − 1595.8 | 0.9971 | 0.02 | 0.08 | 0.79 | y = 32429x −1529.2 | 0.9931 | 0.08 | 0.27 | 0.81 | y = 33216x − 900 | 0.9964 | 0.04 | 0.12 | 0.83 |
| DTX2 | y = 9072.9x + 1250 | 0.9992 | 0.01 | 0.02 | y = 7286.3x + 10404 | 0.9974 | 0.11 | 0.34 | 0.80 | y = 7503.6x + 9516.7 | 0.9978 | 0.03 | 0.10 | 0.83 | y = 7656.1x + 14129 | 0.9978 | 0.04 | 0.14 | 0.84 | y = 7305.8x + 13629 | 0.9978 | 0.06 | 0.21 | 0.81 |
| YTX | y = 10246x − 8650 | 0.9974 | 0.02 | 0.07 | y = 8110.7x − 3329.2 | 0.9977 | 0.01 | 0.04 | 0.79 | y = 8262x − 8270.8 | 0.9981 | 0.06 | 0.20 | 0.81 | y = 8552.1x − 9491.7 | 0.9974 | 0.02 | 0.06 | 0.83 | y = 8303.7x + 4625 | 0.9987 | 0.03 | 0.09 | 0.81 |
a Matrix effects are calculated by slope of matrix curve/slope of solvent curve.