刺参(Apostichopus japonicus)中 13 种三嗪类除草剂残留情况及风险评估

Residues and Risk Assessment of 13 Triazine Herbicides in Apostichopus japonicus

超高效液相色谱-串联质谱法(UPLC-MS/MS)分析了刺参(Apostichopus japonicus)3种三嗪类除草剂的残留水平,并采用食品安全状态指数和危害残留物的风险系数评估了其潜在风险。在采集的57个样品中,阿特拉津、扑草净和莠灭净均有不同程度的检出,其余10种除草剂均未检出,其中检出率最高的为扑草净(77.2%),其次为阿特拉津(15.8%)和莠灭净(8.77%);最高检出浓度分别为阿特拉津(0.84μg/kg)、扑草净(54.4μg/kg)和莠灭净(0.69μg/kg)。依照所建立的方法对采集的刺参样品中三嗪类除草剂的残留量采用安全指数法进行评估,表明在所采样月份中,13种三嗪类除草剂残留对刺参安全没有影响。在所采样的6个城市中,其安全指数均小于1,说明刺参安全状态很好,除草剂对刺参安全没有影响。阿特拉津、扑草净和莠灭净的风险系数依次为0.2、0.38和0.2,均小于1.5,表明上述3种物质均为低度风险。从风险系数来看,本研究进一步确定所采样的6城市的刺参在除草剂残留方面是低风险的,是安全的。

A method for the determination of triazine herbicide residues in Apostichopus japonicus by ultra performance liquid chromatography tandem mass spectrometry was established. In order to investigate the situation of 13 triazine herbicide residues, food safety indexes and risk coefficient were used to evaluate the potential risk of triazine herbicide. The lliazine herbicides of atrazine, prometryn and ametryn were detected in 57 samples. The highest detection rate was prometryn （77.2%）, followed by atrazine （15.8%） and ametryn （8.77%）. The maximum concentration of atmzine, prometryn and ametryn was 0.84 ~tg/kg, 54.4 p.g/kg and 0.69 ~g/kg, respectively. The detection ratio in August were significantly higher than those in September, October and November, which suggested that during the collected month, triazine herbicide had few influence on Apostichopus japonicus. According to the assessment of food safety indexes of 57 Apostichopus japonicus samples collected from six cities, the safety indexes of 13 analytes were less than l, indicating Apostichopusjaponicus were in safe and good condition. The risk coefficients of atrazine, prometryn and ametryn were 0.2, 0.38 and 0.2, all less than 1.5, w1＂fich proved that the three analytes were at low risk group. Therefore, Apostichopusjaponicus from six cities was at low risk on triazine herbicides and safe to eat.