基围虾中铅镉元素快速检测法的可行性分析

Feasibility analysis of rapid detection of lead-cadmium in base shrimp

中文关键词:  海产品  铅镉元素  快速检测  石墨炉原子吸收光谱法

英文关键词:base shrimp  lead-cadmium  rapid detection  graphite furnace atomic absorption spectrometry

中文摘要:

      目的 分析基围虾中铅元素、镉元素快速检测法的可行性。方法 以基围虾作为研究对象, 依据国标要求, 筛选出5个符合规格的快速检测产品。通过5个快速检测产品对阴性样、1.0倍以及1.8倍限量值的阳性样中的重金属铅和镉进行快速测定, 并通过石墨炉原子吸收光谱法对铅镉的快速检测结果进行验证。结果 快检1和快检2在铅镉元素含量分别大于0.413 mg/kg及0.488 mg/kg时, 检测结果显示为阳性; 快检3和快检5在铅镉元素含量分别大于0.607 mg/kg及0.604 mg/kg时, 检测结果显示为阳性, 这说明海产品铅镉元素的快速检测产品对基围虾中铅镉元素快速测定具有一定的可行性, 检测结果存在一定的差异, 主要的原因可能为不同牌子的产品, 在技术上存在一定的差异, 导致产品的灵敏度存在差异。结论 快速检测法测定基围虾中铅、镉元素具有可行性, 这为海产品重金属元素测定提供了参考依据。

英文摘要:

      Objective To analyze the feasibility of rapid detection of lead and cadmium in base shrimp. Methods Taking base shrimp as the research object, five rapid detection products that meet the national standards for lead and cadmium limits in base shrimp were screened. Four samples were subjected to rapid determination of heavy metals lead and cadmium, and the rapid detection results were verified using graphite furnace atomic absorption spectrometry. Results Rapid detection product 1 and rapid detection product 2 showed positive results when the content of lead and cadmium exceeded 0.413 mg/kg and 0.488 mg/kg, respectively. Similarly, rapid detection product 3 and rapid detection product 5 displayed positive results when the content of lead and cadmium surpassed 0.607 mg/kg and 0.604 mg/kg, respectively. This indicated that rapid detection products for lead and cadmium in seafood have a certain feasibility in rapidly determining these elements in base shrimp. However, there were some variations in the detection results, which were primarily attributed to technical differences among products from different brands, leading to variations in product sensitivity. Conclusion The rapid detection method for determining lead and cadmium in base shrimp is feasible, providing a reference basis for the determination of heavy metal elements in seafood.