Research Article
UPLC-MS/MS Method for Simultaneous Determination of Three Major Metabolites of Mequindox in Holothurian
Table 5
Concentrations of 1-DMEQ, BDMEQ, and MQCA contamination in commercial holothurian samples.
| Commercial sample | Sample code | Concentration of 1-DMEQ (μg/kg) | Concentration of BDMEQ (μg/kg) | Concentration of MQCA (μg/kg) |
| Holothurian | 1 | ND | ND | ND | 2 | 2.27 | 4.68 | 3.99 | 3 | ND | 6.88 | 6.52 | 4 | 3.96 | 6.24 | 7.96 | 5 | 5.68 | 3.95 | ND | 6 | 6.26 | 6.21 | ND | 7 | 6.44 | 3.698 | ND | 8 | ND | ND | ND | 9 | ND | ND | ND | 10 | 3.98 | 5.68 | 3.57 | 11 | ND | ND | ND | 12 | ND | ND | 9.22 | 13 | 4.69 | 6.09 | 8.69 | 14 | ND | ND | ND | 15 | 6.10 | 4.33 | ND | 16 | ND | ND | 5.39 | 17 | ND | ND | ND | 18 | 5.62 | 4.18 | ND | 19 | 5.33 | 5.62 | 3.59 | 20 | ND | 5.19 | ND |
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ND: not detected.
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