第4期
2.3
钾和磷对其它元素测定的影响
光谱学与光谱分析675
钾和磷是大豆样品中的主量元素。本研究考察了钾和磷对其他微量元素测定的影响。分别配置了含0.1,0.5和1.0 L-1钾和磷并含有其它微量元素的合成样品,AI,Ba,Ca,mg
Cd,Fe,Mg,Ni,Pb,Zn,Co,Cu,Li,Mn和Ti的测定结果均在5%范围内,这说明K和P的存在对其他元素的测定没有影响。2.4
大豆样品分析
参
[1]JSchmppenthau,etaI.Analyst,1996,121:845.
次量和微量元素的分析结果给在11种东北大豆中主量、
表3中,小麦标准物质(GBW08503)的测定结果也列在表中以作比较。小麦标准参考物质的分析结果与推荐值相吻合,说明本工作所采用的样品消解方法是可靠的。
结果表明,不同品种的大豆中的主量元素K,Ca,P,Mg,(Na除外)含量没有显著差异,而不同样品中的微量元素Zn
如Ba,Ti,Ni等则差别较大,这可能是由于大豆种植环境条件的差异所造成的。
考文献
[2]PENGShan-shan,(彭珊珊,张霖霖,姚素楠,赵淑华,黄ZHANGLin-Iin,YAOSu-nan,ZHAOShu-hua,andHUANGTing
,1998,18(2):217.SpectralAnalysis(光谱学与光谱分析)
[3]NCarrion,etaI.At.Spectroscopy,1995,12:162.[4]YOin,etaI.J.AnaI.At.Spectrometry,1995,10:455.[5]BSSheppard,etaI.Analyst,1994,119:1683.[6]ZVSkopec,etaI. .Chromatogr.Sci.,1993,31:445.[7]NCarrion,etaI. .Anal.At.Spectrometry,1994,9:205.[8]AKrushevska,RMBarnes.Analyst[London],1994,119:131.[9]CKManickum,etaI. .Anal.At.Spectrometry,1994,9:227.[10]RAikawa,etaI.DenpenKagaku,1993,40:277.
婷).Spectroscopyand
Major,MinorandTrace-elementalContentsAnalysisinNortheast
SoybeansbyICP-AES
,LIUSi-dong3,ZHANGZhuo-yong1,CHENHang-ting2,WANGDan3,GUOLi-ping3LIUJie2,andZENGXian-jin2
1.DepartmentofChemistry,CapitalNormalUniuersity,Beijing100037,China2.ChangchunInstituteofAppliedChemistry,ChineseAcademyofSciences,Changchun3.FacultyofChemistry,NortheastNormalUniuersity,Changchun130024,ChinaAbstract
130022,China
Major,minorandtraceeIementaIcontentsinnortheastChinasoybeansweredeterminedbyusinginductiveIycoupIedpIasmaatomic
(ICP-AES)emissionspectrometry.ThreedifferentsampIedigestionmethodsincIudingtwowetdigestions,HNO3-HCIO4andHNO3-H2SO4anda
dryashmethodwerecompared.OwingtothehighoiIcontentinsoybeans,IongtimeisneededandaccessacidshouIdbeaddedwithmixedaciddigestionmethods,whichmayresuItinhighersampIebIank.Therefore,thedryaskmethodwouIdbemoreproperforthepre-treatmentofsoybeansampIes.PotassiumandphosphorusaremajoreIementsinsoybeans,sotheeffectofpotassiumandphosphorusontheothereIementswasinvesti-
gated.ResuItsshowedthatthepotassiumandphosphorusdidnotaffectthedeterminationofothertraceeIements.Therearenotsignificantdiffer-encesintraceeIementaIcontentsfortheeIevennortheastChinasoybeans.Keywords
InductiveIycoupIedpIasmaatomicemissionspectrometry;Soybean;EIementaIanaIysis
(ReceivedJune9,2001;acceptedOct.29,2001)