| ED-XRF法快速测定虾预混合饲料中钙、磷含量 |
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| 引用本文： | 刘召贵,张辉,赵鹏,吴敏,李强.ED-XRF法快速测定虾预混合饲料中钙、磷含量[J].畜牧与饲料科学,2020,41(4):1-7. |
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| 作者姓名： | 刘召贵 张辉 赵鹏 吴敏 李强 |
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| 作者单位： | 江苏天瑞仪器股份有限公司,江苏 昆山 215300;江苏天瑞仪器股份有限公司,江苏 昆山 215300;江苏天瑞仪器股份有限公司,江苏 昆山 215300;江苏天瑞仪器股份有限公司,江苏 昆山 215300;江苏天瑞仪器股份有限公司,江苏 昆山 215300 |
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| 摘 要： | 虾预混合饲料中钙（Ca）、磷（P）含量直接影响虾的生长、发育和健康状况。传统的化学分析方法需要对虾预混合饲料进行复杂的预处理,取得测试结果需要花费数小时。采用一种简单、快捷的分析方法——能量色散X射线荧光光谱法（ED-XRF）,对虾预混合饲料进行粉碎、压片和测试,在数分钟内获得了样品的测试结果。ED-XRF法对Ca、P的检出限分别为43 mg/kg和163 mg/kg,定量限分别为142 mg/kg和544 mg/kg。对虾预混合饲料3#样本连续测试6次,Ca、P的连续测定数据的极差分别为0.159%和0.013%,分别小于推荐性国家标准中Ca、P含量检测的重复性临界差CrR95（6）0.239%和0.031%,表明ED-XRF法满足推荐性国家标准对饲料中Ca、P含量测定的要求。通过对10个已定值的虾预混合饲料样品进行Ca、P含量测定,ED-XRF法的测定值与推荐性国家标准中相关方法测定值的相对差值不大于4.55%。综上表明,ED-XRF法具有较高的精密度和准确度,可用于虾预混合饲料生产企业对Ca、P元素添加量的监控。
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| 关 键 词： | 能量色散X射线荧光光谱法 虾预混合饲料 钙含量 磷含量 快速检测 |
| 收稿时间： | 2020-04-25 |
Rapid Determination of Calcium and Phosphorus Contents in Shrimp Premix Feed by ED -XRF Method |
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| LIU Zhao-gui,ZHANG Hui,ZHAO Peng,WU Min,LI Qiang.Rapid Determination of Calcium and Phosphorus Contents in Shrimp Premix Feed by ED -XRF Method[J].Animal Husbandry and Feed Science,2020,41(4):1-7. |
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| Authors: | LIU Zhao-gui ZHANG Hui ZHAO Peng WU Min LI Qiang |
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| Institution: | Jiangsu Skyray Instrument Co. ,Ltd. ,Kunshan 215300,China |
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| Abstract: | The contents of calcium （Ca） and phosphorus （P） in premix feed directly affected the growth, development and health status of shrimp. Traditional chemical analysis methods required complicated pre-treatment process for shrimp premix feed and always took several hours to obtain test results. In this study, a simple and fast analysis method, energy dispersive X-ray fluorescence spectrometry （ED-XRF）, was used to assess the contents of Ca and P in shrimp premix feed, and the test results of the samples were obtained within a few minutes. The pre-treatment process of ED-XRF method only included comminution and squash. The limit of detection of ED-XRF method for Ca and P were 43 mg/kg and 163 mg/kg, respectively, and the limit of quantification of that for Ca and P were 142 mg/kg and 544 mg/kg, respectively. Six consecutive determinations of shrimp premix feed sample 3# were conducted by ED-XRF method. The range of the continuous measurement data of Ca and P were 0.159% and 0.013%, respectively, which were smaller than the repeatability critical difference of CrR95 （6） for the contents detection of Ca （0.239%） and P （0.031%） in the recommended national standard, indicating that the ED-XRF method met the requirements of the recommended national standard for the determination of Ca and P contents in feed. By analyzing the contents of Ca and P of ten shrimp premix feed samples which were measured by national standard methods, we found that the relative differences in measured value of Ca and P contents between ED-XRF method and recommended national standard method did not exceeded 4.55%. To sum up, the ED-XRF method had high precision and accuracy, and it could be used in monitoring the addition of Ca and P for shrimp premix feed production enterprises. |
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| Keywords: | energy dispersive X-ray fluorescence spectrometry method shrimp premix feed calcium content phosphorus content rapid determination |
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