| 饲料级磷酸盐中磷含量的快速测定方法研究 |
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| 引用本文： | 李优琴,吕康,周维仁,陈小龙.饲料级磷酸盐中磷含量的快速测定方法研究[J].安徽农业科学,2016,44(32). |
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| 作者姓名： | 李优琴 吕康 周维仁 陈小龙 |
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| 作者单位： | 江苏省农业科学院食品质量安全与检测研究所，江苏南京210014;江苏省省部共建食品质量安全重点实验室，江苏南京210014;江苏省农业科学院畜牧研究所,江苏南京,210014 |
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| 摘 要： | 目的]建立饲料级磷酸盐中磷的快速测定方法。方法]采用分光光度法研究了磷酸盐中总磷含量的测定条件,并与国标方法进行比较测定了不同种类饲料级磷酸盐样品。结果]优化后的测试条件为:测试波长420 nm,显色酸度控制在0.5~1.0 mol/L,显色温度不低于15℃,显色时间20~30 min。方法回收率97.5%~100.1%,比较2种方法测定各样品的结果,均满足标准要求。结论]采用分光光度法测定饲料级磷酸盐中磷的含量,方法简单、快捷,可以满足标准要求的准确度和精密度。
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| 关 键 词： | 饲料级磷酸盐 磷 分光光度法 |
Rapid Analysis Method of Phosphorus Content in Feed-grade Phosphate |
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| Abstract: | Objective] To establish a method for the rapid determination of the phosphorus in feed-grade phosphate.Method]The concentration of phosphorus in phosphate was determined by spectrophotometry method .Different types of feed-grade phosphate samples were detected and compared by national standard method.Result] The optimized detection condition was as follows: 420 nm detection wavelength, 0.5 -1.0 mol/Lchromogenic acidity, color developing temperature greater than 15 ℃, and 20-30 min color developing time.Under this condition, the recovery rate was 97.5%-100.1%.The results of two methods all met the requirement of standard.Conclusion] Phosphorus content in feed-grade phosphate detected by spectrophotometry method is proved to be easy, rapid and accurate. |
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| Keywords: | Feed-grade phosphate Phosphorus Spectrophotometry method |
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