嫩姜和老姜中重金属铅元素和6种农药残留检测及分析

    Determination and Analysis of Heavy Metal Lead and 6 Pesticides in Tender Ginger and Old Ginger

    • 摘要: 为了解不同生长期的嫩姜和老姜中重金属铅元素和6种农药残留的情况,从市场和超市随机采集了40批次嫩姜和40批次老姜,按照现行国家标准方法检测铅、吡虫啉、噻虫嗪、甲拌磷、氧乐果、氯氰菊酯和高效氯氰菊酯、氯氟氰菊酯和高效氯氟氰菊酯等7个项目。结果表明:80批次姜中有8批次老姜不合格,总合格率为90.0%,其中嫩姜合格率为100.0%,老姜合格率为80.0%,不合格项目分别为铅、吡虫啉、噻虫嗪。结合检测数据分析,发现样本中只有铅、吡虫啉、噻虫嗪3个项目有检出,呈现生长期长的老姜较生长期短的嫩姜中农药检出频率高,铅的检出值水平老姜较嫩姜高。结合检测数据,分别对嫩姜和老姜中铅、吡虫啉、噻虫嗪等项目检出和超标情况进行结果和原因分析,可为辖区内食用农产品姜安全风险控制提供科学依据。

       

      Abstract: In order to understand the heavy metal lead and 6 kinds of pesticide residues in tender ginger and old ginger at different growth stages, 40 batches of young ginger and 40 batches of old ginger were randomly collected from the market and supermarket. According to the current national standard method, 7 items were detected, including lead, imidacloprid, thiamethoxam, phorate, omethoate, cypermethrin and beta-cypermethrin, cyhalothrin and lambda-cyhalothrin. The results showed that there were 8 batches of old ginger unqualified in the 80 batches, with the total qualified rate being 90.0%, among which the qualified rate of tender ginger was 100.0%, the qualified rate of old ginger was 80.0%, the unqualified items were lead, imidacloprid, thiamethoxam. Combined with the analysis of detection data, it was found that only lead, imidacloprid and thiamethoxam were detected in the samples, showing that the detection frequency of pesticide in the old ginger with long growth period was higher than that in the tender ginger with short growth period, and the detection level of lead in the old ginger was higher than that in the tender ginger. Combined with the detection data, the results and causes of the detection and overspecification of the items such as lead, imidacloprid, thiamethoxam in tender ginger and old ginger were respectively analyzed, which could provide scientific basis for the safety risk control of edible agricultural ginger in the area.

       

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