恒温振荡浸提-电感耦合等离子体发射光谱法测定土壤中的交换性锰  

Determination of exchangeable manganese in soil by constant temperature oscillation extraction-inductively coupled plasma emission spectrometry

作　　者：田戈 刘卫 郭颖超 马春红 张文宇 谷周雷 TIAN Ge;LIU Wei;GUO Ying-chao;MA Chun-hong;ZHANG Wen-yu;GU Zhou-lei(Geological Brigade of North China Geological Survey Bureau,Chengde Hebei 067000)

机构地区：[1]华北地质勘查局五一四地质大队,河北承德067000

出　　处：《中国土壤与肥料》2023年第8期243-248,共6页Soil and Fertilizer Sciences in China

基　　金：河北省重点研发计划项目(21327504D)。

摘　　要：锰元素是人体内所必须的微量元素之一,土壤中交换性锰的含量直接影响着植物对锰元素的吸收,进而通过食物链影响人体健康。采用1 mol/L乙酸铵溶液作为交换性锰浸提剂,以高精度恒温振荡箱进行土壤样品前处理,用电感耦合等离子体发射光谱仪进行样品分析测试,通过优化前处理操作条件,建立了一种准确可靠、精密度高、稳定性好的检测方法,本方法的检出限为0.104 mg/kg,有证土壤标准样品的相对标准偏差(n=12)为1.11%~2.45%,采用本方法与LY/T 1263—1999对实际土壤样品进行分析比对,相对偏差均小于5%,符合标准方法质控规定,满足样品分析要求,本方法非常适合实验室推广使用。Manganese is one of the necessary trace elements in human body.The content of exchangeable manganese in soil directly affects the absorption of manganese by plants,and then affects human health through the food chain.In this paper,1 mol/L ammonium acetate solution is used as the exchangeable manganese extractant,the soil samples are pretreated in a high-precision constant temperature shaking box,and the samples are analyzed and tested by inductively coupled plasma emission spectrometer.By optimizing the pretreatment operating conditions,an accurate,reliable,high-precision and stable detection method is established.The detection limit of this method is 0.104 mg/kg,The relative standard deviation(n=12)of certified soil standard samples is 1.11%~2.45%.This method is compared with LY/T 1263-1999 to analyze the actual soil samples,and the relative deviation is less than 5%,which meets the quality control provisions of the standard method and the sample analysis requirements.This method is very suitable for laboratory promotion and use.

关 键 词：土壤 交换性锰 浸提条件 电感耦合等离子体发射光谱仪 

分 类 号：S153.6[农业科学—土壤学]