论文部分内容阅读
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。
Residual levels of three triazine herbicides from Apostichopus japonicus were analyzed by UPLC-MS / MS and the risk factors of food safety status index and hazard residues were evaluated Its potential risk. Among the 57 samples collected, atrazine, prometryn and ametryn were all detected to some extent, and none of the other 10 herbicides were detected. The highest detection rate was prometryne (77.2 %), Followed by atrazine (15.8%) and ametryn (8.77%); the highest detected concentrations were atrazine (0.84μg / kg), prometryn (54.4μg / kg) Off net (0.69μg / kg). The safety index method was used to evaluate the residual amount of triazine herbicide in the collected sea cucumber samples according to the established method, indicating that 13 triazine herbicide residues had no effect on the safety of sea cucumber in the sampling month. Among the six cities sampled, the safety index was less than 1, indicating that the sea cucumber was safe and the herbicide had no effect on the safety of sea cucumber. The risk coefficients of atrazine, prometryn and ametryn were 0.2, 0.38 and 0.2, respectively, which were less than 1.5, indicating that the above three substances are all at low risk. From the risk coefficient point of view, this study further confirms that the sampled six cities of the sea cucumber is low-risk herbicide residues, is safe.