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中国农学通报 ›› 2017, Vol. 33 ›› Issue (29): 125-130.doi: 10.11924/j.issn.1000-6850.casb17070009

所属专题: 水产渔业

• 畜牧 动物医学 蚕 蜂 • 上一篇    下一篇

X射线荧光光谱法快速检测原料公干鱼中的镉

蒋 成,杨丽霞,邱华丽,徐睿鑫,周金沙,邱志鹏   

  1. (长沙市食品药品检验所,长沙 410016)
  • 收稿日期:2017-07-03 修回日期:2017-09-11 接受日期:2017-09-11 出版日期:2017-10-24 发布日期:2017-10-24
  • 通讯作者: 蒋 成
  • 基金资助:
    湖南省食品药品监督管理局食品药品安全科技项目(湘食药科R201616)。

Rapid Detection of Cadmium in Raw Stolephorus commersonnii Material Based on X-ray Fluorescence Spectrometry

Jiang Cheng, Yang Lixia, Qiu Huali, Xu Ruixin, Zhou Jinsha, Qiu Zhipeng   

  1. (Changsha Institute for Food and Drug Control, Changsha 410016)
  • Received:2017-07-03 Revised:2017-09-11 Accepted:2017-09-11 Online:2017-10-24 Published:2017-10-24

摘要: 旨在建立一种基于X射线荧光光谱法快速检测原料公干鱼(原料鱼)中镉的方法。应用X射线荧光光谱法快速检测原料鱼初始样及干燥样中的镉含量,对快速检测与标准检测结果的相关性进行了分析;考察了对原料鱼进行快速干燥处理的可行性;采用原料鱼的标准测定值对X射线荧光光谱仪进行校正后,考察了快速检测方法的精密度、检测限、准确度等性能参数。结果表明:X射线荧光光谱法能准确测定原料鱼干燥样中的镉,检测限达0.088 mg/kg,线性范围为0.088~1.286 mg/kg,相对标准偏差低于10%。该快速检测方法测定单个样品只需40 min左右,可满足现场对原料鱼中镉的快速测定要求,为防控原料鱼食品中镉超标风险提供了一种高效的筛查手段。

关键词: 燕麦, 燕麦, 腐植酸类肥料, 浸种, 浇灌, 种子萌发, 幼苗生长

Abstract: To establish a rapid detection method based on X-ray fluorescence spectrometry for cadmium (Cd) in raw Stolephorus commersonnii material (raw fish material).[methods]Cd content of raw fish material in original state and dry state were measured rapidly by X-ray fluorescence spectrometry, and the correlation of the measurements by rapid detection method was compared with that of the measurements by standard method; The feasibility of quick drying method for processing raw fish material was evaluated; X-ray fluorescence spectrometer was calibrated with the measured value by standard method; then the performance parameters of the rapid method, such as the precision, detection limit, accuracy, etc. were studied. [results]X-ray fluorescence spectrometer achieved rapid detection for Cd content of raw fish material in dry state. The detection limit of the rapid method was 0.088 mg/kg, the linear range was 0.088-1.286 mg/kg,the relative standard deviation was less than 10%. [conclusion]Moreover, this rapid detection method took only about 40 minutes to determinate a sample, could meet the requirement of rapid on-site detection of Cd, and offer an efficient screening tool to prevent and control the Cd risk of exceeding the national standard in food made from raw fish material.

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