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当前位置: 首页 > 文章 > Luminol-KMnO_4化学发光差异加标法快速测定饲料中的镉 饲料工业 2019 (16) 47-51
Position: Home > Articles > Rapid determination of cadmium in feed by luminol-KMnO_4 system with chemiluminescence different amount of standard addition method Feed Industry 2019 (16) 47-51

Luminol-KMnO_4化学发光差异加标法快速测定饲料中的镉

作  者：
高向阳
单  位：
郑州科技学院食品科学与工程学院郑州市食品安全快速检测重点实验室
关键词：
饲料;镉;流动注射化学发光;差异加标法;重金属
摘  要：
为建立一种便捷、快速测定饲料中镉的新方法,样品微波消解后,用鲁米诺-高锰酸钾(Luminol-KMnO_4)化学发光差异加标法测定镉。结果表明:鲁米诺溶液的浓度为4×10~(-5)mol/l,高锰酸钾浓度为5×10~(-6)mol/l,1.124μg/l镉标准溶液加入1.00 ml和2.00 ml时效果较好。饲料中镉质量分数在0.056 0～0.657 0μg/g,平均回收率大于98%。该法不需要绘制标准曲线和测定空白溶液,快速简便,成本低廉,为饲料中重金属镉的检测提供了新技术,具有一定的创新性和实用价值。
译  名：
Rapid determination of cadmium in feed by luminol-KMnO_4 system with chemiluminescence different amount of standard addition method
作  者：
Gao Xiangyang;
关键词：
feed;;cadmium;;flow injection chemiluminescence;;different amount of standard addition method;;heavy metal
摘  要：
To establish a convenient and rapid method for determination of cadmium in feed, cadmium was determined by luminol-potassium permanganate(Luminol-KMnO_4) chemiluminescence with adding different amounts of standard solution after the samples were digested by microwave. The results showed that: the luminol solution concentration was 4×10~(-5) mol/l, potassium permanganate was 5×10~(-6) mol/l, at the same time when 1.124 μg/l cadmium standard solution was added into 1.00 ml and2.00 ml, the effect was better. The cadmium content in feed was 0.056 0～0.657 0 μg/g, the average recovery was more than 98 percent. The method does not require the drawing of standard curves and the determination of blank solutions, fast and easy, low cost. It provides a new technique for the detection of heavy metal cadmium in feed, it has certain innovation and practical value.

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