超声萃取-ICP-OES法快速测定食品中硼砂  

Rapid determination of borax in food by ICP-OES method with water ultrasonic extraction

作　　者：梁绍成[1] 肖小丽[1] 奉夏平[1] 黄秀丽[1] 陈嘉聪[1] 吕淑霞[1] 

机构地区：[1]广东省惠州市质量计量监督检测所,广东惠州516003

出　　处：《食品工业科技》2014年第3期292-295,共4页Science and Technology of Food Industry

基　　金：广东省惠州市质量技术监督局科技项目(HZZJ201205)

摘　　要：建立超声萃取一电感耦合等离子体发射光谱（ICP—OES）法快速测定食品中硼砂含量的方法。食品样品经水超声萃取后，直接采用1CP—OES法测定其中硼元素含量，再换算成硼砂的含量。该法在0．05-50mg／L范围内线性良好，相关系数为0．9999，检出限为0．95mg／kg（以硼砂计），低中高三个不同浓度加标回收率为99．1％～102．4％，相对标准偏差为0．55％-0．80％。该方法操作简单，分析快速、灵敏、准确，适用于食品中硼砂含量的钡，1定。Rapid determination method of borax content in food by inductively coupled plasma atomic emission spectrometry（ICP-QES） with water ultrasonic extraction was established. Food sample was extracted by water ultrasonic,and the boron element content in food was directly determined by ICP-QES method, conversion into borax content again.The calibration curve was linear in the range of 0.05-50mg/L,the correlation coefficient was 0. 9999 and the detection limit was 0.95mg/kg（the borax）,the spiked recoveries ranged from 99.1% to 102.4% of three different levels,the relative standard deviation was 0.55%-0.80%.1t indicated that the method was simple, sensitive,accurate and short of analytical cycle, which could meet the demand for the determination of borax content in food.

关 键 词：硼砂 食品 ICP—OES 超声萃取 

分 类 号：TS207.3[轻工技术与工程—食品科学]