摘要
使用便携式可见分光光度计对土壤中的有效成分（有效磷、速效钾、铵态氮）进行现场快速定量分析.结果表明：有效磷检出限0.41mg/kg,速效钾检出限1.44mg/kg,铵态氮检出限0.44mg/kg.与标准方法的对比,快检方法相对偏差从1.9%～9.68%.精密度的评价实验中,3种检测项目的精密度均优于5%.实验证明便携式可见分光光度计测定土壤中有效磷、速效钾、铵态氮的结果与实验室测定结果相当,是目前阶段对蔬菜种植过程进行监控的一种有效方法.
Effective Components（available P, available K, ammonium N）in soil wereanalyzedquantificationally by Portable visible spectrophotometer. Results showedthatthe detection limits of RFT（rapid field test）for ammonium N, available P, and available K were 0.41mg/kg, 1.44mg/kg and 0.44mg/kg respectively. Compared to the standard method, the experiments showedthat the relative deviation between RFT and standard method is less than 9.68%. Precision experimensshowed that the relative standard deviation（RSD） is less than 5%. The experimental results showed that the resultsobtainedby portable visible spectrophotometer are similar to the results of laboratory tests. RFT is desirable for efficient monitoring and control of vegetable cultivation.
作者
窦宏亮
宋云飞
芦静
Dou Hongliang Song Yunfei Lu Jing(Beijing Purkinje General Instrument Co., Ltd, Beijing 101200)
出处
《现代科学仪器》
2017年第3期54-57,61,共5页
Modern Scientific Instruments
基金
京津冀蔬菜质量安全监测检测技术集成与应用示范（课题编号：Z151100004915006）
关键词
土壤
肥料
现场快检
有效磷
速效钾
铵态氮
有机蔬菜
Portable visible spectrophotometer
rapid field test
available phosphorus
available potassium
ammonium nitrogen
organic vegetables
