《食品工业》2023年第44卷第1期301分析检测ICP-OES法测定碱水面中硅酸钠的含量刘艳艳1,陈少杰1,肖亚兵2,石硕3,卢丽1*,陈文锐11.广州海关,广东省动植物与食品进出口技术措施研究重点实验室(广州510623);2.天津海关(天津300461);3.北京海光仪器有限公司(北京101300)摘要建立水浴提取-电感耦合等离子体发射光谱法对碱水面中硅酸钠含量进行测定的方法。结果表明:在212.412,251.611和288.158nm这3个波长下,硅在0~50μg/mL范围内线性关系良好,线性相关系数均大于0.999;3个波长下方法定量限分别是29.1,24.9和22.0mg/kg;硅酸钠加标量分别为1.08×103,1.07×104和3.26×104mg/kg时,方法回收率为91.4%~107%,相对标准偏差(SRSD)为2.40%~5.64%(n=6)。该方法前处理简单、准确度好、线性范围宽,适于大批碱水面中硅酸钠含量的测定。关键词碱水面;硅酸钠;水浴提取;电感耦合等离子体发射光谱法DeterminationofSodiumSilicateinAlkalineNoodlesbyICP-OESLIUYanyan1,CHENShaojie1,XIAOYabing2,SHIShuo3,LULi1*,CHENWenrui11.GuangzhouCustomsDistrict,GuangdongProvincialKeyLaboratoryofImportandExportTechnicalMeasuresofAnimal,PlantandFood(Guangzhou510623);2.TianjinCustomsDistrict(Tianjin300461);3.BeijingHaiguangInstrumentCo.,Ltd.(Beijing101300)AbstractAmethodforthedeterminationofsodiumsilicateinalkalinenoodlesbywaterbathextraction-inductivelycoupledplasmaemissionspectrometrywasestablished.Theresultsshowedthatatthethreewavelengthsof212.412,251.611and288.158nm,therewasagoodlinearrelationshipofsiliconintherangeof0-50μg/mL,andthelinearcorrelationcoefficientswereallbetterthan0.999.Thelimitsofquantificationofthemethodatthethreewavelengthswere29.1,24.9and22.0mg/kg,respectively;Thethreespikedlevelsofsodiumsilicatewere1.08×103,1.07×104and3.26×104mg/kg;Therecoverieswere91.4%-107%,andtherelativestandarddeviation(SRSD)was2.40%-5.64%(n=6).Themethodhadsimplepretreatment,goodaccuracyandwidelinearrange,andwassuitableforthedeterminationofsodiumsilicatecontentinalargenumberofalkalinenoodles.Keywordsalkalinenoodles;sodiumsilicate;waterbathextraction;inductivelycoupledplasmaemissionspectrometry*通信作者;基金项目:广州海关科技项目(2020GZCK-009),海关总署科技项目...