N_2O-C_2H_2火焰原子吸收光谱法检测海蜇中铝含量  

N_2O-C_2H_2 flame atomic absorption spectroscopy method to determine the content of aluminum in jellyfish

作　　者：吴则业 岑剑伟[1] 杨贤庆[1] 魏涯[1] 周婉君[1] 赵永强[1] 

机构地区：[1]中国水产科学研究院南海水产研究所,国家水产品加工技术研发中心,农业部水产品加工重点实验室,广东广州510300 [2]上海海洋大学食品学院,上海201306

出　　处：《食品与发酵工业》2015年第2期184-188,共5页Food and Fermentation Industries

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(No.2013YD01);农业部水产品加工重点实验室开放基金(No.NYJG201309);广东省农业标准化研究项目(No.2130109-10-1)

摘　　要：建立了氧化亚氮-乙炔火焰原子吸收光谱法测定海蜇中铝含量的方法。通过实验优化了仪器的检测条件：燃助比为0.67、灯电流为7.5 m A、狭缝宽为0.5 nm及检测波长为309.3 nm;优化条件下方法的检测线性在20-160 mg/L,相关系数R=0.999 8。比较了湿法消解、微波消解、酸煮消解3种样品前处理方法,结果表明检测结果并无显著性差异。该方法的检出限为3.5mg/L,相对标准偏差在1.26%-3.23%,加标回收率在88.50%-104.20%。The nitrous oxide-acetylene flame atomic absorption spectroscopy method was established to determine aluminum content in jellyfish. The detection conditions of instrument were optimized through experiments： The combustion ratio was 0. 67, lamp current was 7.5 mA, slit width was 0.5 nm and test wavelength was 309.3 nm. The detection linear range of method under optimum conditions was 20 mg/L - 160 mg/L, and correlation coefficient R = 0. 9998. There were no significant differences in results after jellyfish samples were digested by three pretreatment methods of wet digestion, microwave digestion and acid boiling digestion. The detection limit of this method was 3.5 mg/L. T he relative standard deviation was between 1.26% -3.23% , and the recovery was in the range of 88.50% - 104.20%.

关 键 词：氧化亚氮-乙炔 火焰原子吸收 铝 海蜇 

分 类 号：O657.31[理学—分析化学] TS254.7[理学—化学]