电感耦合等离子体发射光谱法下土壤样品中铬含量检测研究

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关键词：电感耦合等离子体发射光谱法（ICP-OES）；土壤样品；铬含量检测 中图分类号：X830 文献标识码：A 文章编号：1008-9500（2025）08-0010-04 DOI： 10.3969/j.issn.1008-9500.2025.08.003

Research on the Detection of Chromium Content in Soil Samples by Inductively Coupled Plasma - Optical Emission Spectroscopy

HUAYun，HUANGCaimin，WANGXianli （Zhejiang Geological ProspectingInstituteof CCGMB，Hangzhou311122，China）

Abstract：AmethodisestablishedfordetectingchromiumcontentinsoilsamplesbasedonInductivelyCoupledPlasma-Optical EmisionSpectroscopy（ICP-OES），thechromiumpolutionstatusofsoil isevaluated inacertainarea，thusprovidingscientificbasis forenvironmentalmonitoringandpolutionpreventionandcontrol.Afterdrying，crushing，andsieving thesoil samples，thechromiumcontent isdtectedusing microwavedigestionandICP-OES，andtheaccuracy，precision，andeliabilityofthe methodare verifiedthroughdrawing standardcurves，spikedrecoverytests，andrepeatabilitytests.Theresults show that the linear regression equation of the standard curve is I=1 256.3C+12.4，with a correlation coefficient R2 =0.9998 and a linear range of 0.1～10.0mg/L .The chromium content in soil samples is 38.7～56.1mg/kg ，withanaverage of 47.4 mg/kg，which does not exceed the national soil environmental quality standard limit 250mg/kg . The recovery rate of spiked samples is 95.6%～ 102.3% ，and the Relative Standard Deviation （RSD） is 1.2%～2.5%，indicating the accuracy and reliabilityof the method.TheestablishedICP-OESmethod is suitableforrapidandaccurate detectionofchromium contentinsoil.Theoverall chromiumcontentinthesoiloftheregionis withinasaferange，butsomeareasareclosetothe warning value and require further monitoring to prevent potential environmental risks.

Keywords：Inductively Coupled Plasma-Optical Emisson Spectroscopy（ICP-OES）;soil samples;chromiumcontent detection

在环境保护与生态治理日益受到全球重视的今天，重金属污染问题，尤其是铬污染，已成为影响土壤质量和人体健康的关键因素之一。（剩余3501字）