论文部分内容阅读
本文针对三疣梭子蟹和虾蛄等甲壳类动物具有富集镉的特性,研究了运用体积排阻色谱-高效液相色谱电感耦合等离子体质谱联用技术(SEC-HPLC-ICP-MS)首次对三疣梭子蟹和虾蛄可食用组织中镉的形态进行分析,研究结果显示梭子蟹肝胰腺中总镉含量高于肌肉组织,且不同样品总镉含量差异很大,镉的形态也存在很大差异。总镉含量高的梭子蟹肝胰腺组织中Cd主要以Cd-MT(金属硫蛋白)形态存在,而总镉含量低的梭子蟹肝胰腺组织中Cd主要以Cd-Cys(半胱氨酸),梭子蟹的肌肉组织中Cd主要以Cd-Cys形态存在。虾蛄的肌肉组织中Cd主要以Cd-MT形态存在。基于本文的研究结论,建议对我国国家标准中甲壳类镉的限量标准做进一步评估和再评价研究。
In this paper, the characteristics of cadmium, such as Portunus trituberculatus and crustacean, are enriched in cadmium. The effect of SEC-HPLC-ICP-MS The results showed that the total cadmium content in liver and pancreas of shuttle crab was higher than that of muscle tissue, and the total cadmium content of different samples was quite different. There was also a great difference in the morphology of cadmium. Cd in the hepatopancreas tissues of the total S. tuberculosis was predominantly in the form of Cd-MT (metallothionein), whereas Cd in the hepatopancreas tissues of S. paucicolata with low total Cd content mainly consisted of Cd-Cys (cysteine) Cd in muscle tissue mainly exists in the form of Cd-Cys. Cd in muscle tissue of shrimp shrimp mainly exists in the form of Cd-MT. Based on the conclusion of this paper, it is suggested to further evaluate and re-evaluate the limited standards of crustacean cadmium in China’s national standards.