海地瓜中重金属快速脱除方法的研究

Quick Removal of Heavy Metals from Acaudina molpadioides

摘要:

为缩短柠檬酸法脱除海地瓜体壁重金属的处理时间，采用柠檬酸浸泡结合穿刺，真空和分段处理的方法来脱除海地瓜中的有害重金属。实验结果表明，穿刺结合分段浸泡处理可以快速脱除海地瓜体壁中的重金属，当浸泡时间到达12 h时，Pb脱除率达88.71%，As脱除率达90.69%，重金属Pb，As，Cr，Cd含量均达GB 2762食品安全国家标准中对食品污染物的限量要求；真空结合分段浸泡处理也可以快速脱除重金属，当浸泡时间到达12 h时，Pb脱除率达86.93%，As脱除率达86.13%，各重金属含量也达到相关标准要求。

Abstract:

The study aimed to combine the citric acid soaking with puncture，vacuum pumping and sub-immersion to shorten the time for the removing of heavy metals from Acaudina molpadioides. Results showed that the combination of puncture and sub immersion resulted in a quick removal of heavy metals with removal rates of 88.71% and 90.69% for Pb and As and the contents of Pb，As，Cr and Cd meeting the limit requirements in GB 2762 at the immersion up to 12 h. The combination of vacuum and sub immersion could also quickly removed heavy metals and when the immersion time reached 12 h，the removal rates of Pb and As were 86.93% and 86.13%，respectively，and the contents of heavy metals were also within the limits.