摘要
研究了超声提取中的不同因素对稻谷中镉的提取率的影响,并优化了提取工艺参数,结果表明试样在粗细度60目,液固比50,HNO3浓度(V/V)0.5%,超声温度60℃,超声时间5min时提取率最高。此方法测得的结果与微波消解-原子吸收法无显著性差异,适用于稻谷中镉的快速准确测定。
This paper studied the influence of different factors on ultrasonic extraction ratio of cadmium in paddy.The optimal extraction condition was defined applying with the orthogonal optimization experiment：the thickness was 60 mesh,the liquid solid ratio was 50,the HNO3 concentration（V/V）was 0.5%,the ultrasonic temperature was 60 ℃,and the ultrasonic time was 5 min.Results measured by this method were no significant difference with microwave digestion atomic absorption spectrometry.It was suitable for rapid and accurate determination of cadmium in paddy.
作者
姚晶
Yao Jing(Suzhou city Wuzhong district grain and oil qualityinspection center 215156)
出处
《粮食储藏》
2018年第2期48-51,共4页
Grain Storage
关键词
超声提取
稻谷
镉
ultrosonic extraction
paddy
cadmium
