湿法消化与微波消解-ICP-AES法测定坛紫菜中重金属  

Determination of Heavy Metals in Materials of Porphyra haitanensis by ICP-AES with Wet Digestion and Microwave Digestion

作　　者：丁仲仲[1] 娄永江[1] 赵一霖[1] 

机构地区：[1]宁波大学海洋学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2014年第3期24-27,共4页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：宁波市农业与社会发展攻关项目(2012C10027)

摘　　要：以东海海域坛紫菜为原料,通过响应曲面实验法优化了微波消解工艺,并对比分析了湿法消化与微波消解2种消解法在电感耦合等离子原子发射光谱法(ICP-AES)技术测定原料中铬、镉、铅质量浓度的应用.研究结果表明:坛紫菜的微波消解工艺为消解温度164℃、每克坛紫菜中硝酸添加量25mL、消解时间15min;与湿法消化相比,微波消解法具有处理时间较短、操作简单、试剂用量少,且能更有效地对样品进行消解的特点.The process of microwave digestion of East China Sea Porphyra haitanensis is optimized using the experimental method of response surface. The digestion method of microwave digestion and wet digestion are used to measure the heavy metals by ICP-AES. According to the results, the three factors in the processing are optimally determined as：the temperature of digestion being 164℃, the acid solvent to material ratio being 25：1, and the digestion time being 15 minutes. The shorter the digestion is, the simpler operation and the less of regent dosage are. It is concluded that, compared to the method of wet digestion, the method of microwave digestion features in being time-saving in processing, convenient in operation, consumption-saving in dosage, and more effective in ICP-AES.

关 键 词：坛紫菜 重金属 微波消解 湿法消化 ICP-AES 

分 类 号：TS207.3[轻工技术与工程—食品科学]