微波消解-电感耦合等离子体发射光谱法测定土壤有效硼  

Determination of available boron in soil by microwave digestion-Inductively coupled plasma emission spectrometry

作　　者：谭昌玲 杨宝红 齐书洲 熊福平 冉福林 鄢中妮 万传杰 邓端富 TAN Chang-ling;YANG Bao-hong;QI Shu-zhou;XIONG Fu-ping;RAN Fu-lin;YAN Zhong-ni;WAN Chuan-jie;DENG Duan-fu(Hubei Key Laboratory of Resources and Eco-environment Geology(Hubei Geological Bureau),Wuhan 430034;Second Geological Brigade of Hubei Geological Bureau,Enshi Hubei 445000)

机构地区：[1]资源与生态环境地质湖北省重点实验室(湖北省地质局),湖北武汉430034 [2]湖北省地质局第二地质大队,湖北恩施445000

出　　处：《中国土壤与肥料》2024年第5期222-226,共5页Soil and Fertilizer Sciences in China

摘　　要：探究用微波消解进行前处理与电感耦合等离子体发射光谱仪(ICP-OES)检测相结合的方法,通过实验对消解时间、消解温度、升温时间及测定过程中铁共存干扰元素、土壤的pH进行了研究。在ICP-OES光谱仪的最优工作条件下,谱线249.773 nm的硼灵敏度高、峰形好,测定结果表明,当样重为10.00 g,浸提液体积为20 mL时,方法检出限为0.005 mg/kg,测定下限为0.020 mg/kg,精密度和准确度满足检测要求,此法适用于批量土壤有效硼的测定。To explore the combination of microwave pre-processing with Inductively coupled plasma emission spectrometry(ICP-OES)in the detection of soil available boron,the digestion time,digestion temperature,temperature rise time,ferrum(Fe)co-existing interference elements and soil pH in the determination process were studied.Under the optimum working conditions of ICP-OES spectrometer,the spectral line boron(B)249.773 nm had high sensitivity and good peak shape.The results showed that the detection limit was 0.005 mg/kg when the sample weight was 10.00 g and the volume of extraction was 20 mL,the lower limit of determination was 0.020 mg/kg,and the precision and accuracy could meet the detection requirements.This method is suitable for the determination of available boron in batch soil.

关 键 词：微波消解 ICP-OES法 土壤有效硼 

分 类 号：S153.6[农业科学—土壤学] O657.31[农业科学—农业基础科学]