摘要
采用电感耦合等离子体光谱和质谱法分析了贻贝标准物质,光谱法测定K、Na、ca、Mg、P、Al、Fe、Zn、Nn和Sr,质谱法测定As、B、Cd、Co、Cr、Cu、Ca、Ce、Mn、Mo、Ni、Pb、Se、Sr、U和V。在优化的工作条件下,测定了来自基体元素K、Na、Ca、P、Cl和C的多原子离子^(39)K^(16)O、^(39)K_2、^(40)Ar^(23)Na、^(43)Ca^(16)O、^(42)Ca^(16)O、^(44)Ca^(16)O、^(31)P^(16)O_2、^(40)Ar^(37)Cl、^(35)Cl^(16)O、^(37)Cl^(16)O和^(40)Ar^(12)C对^(55)Mn、^(78)Se、^(63)Cu、^(59)Co、^(58)Ni、^(60)Ni、^(75)As、^(77)Se、^(51)V、^(53)Cr和^(52)Cr的干扰系数以及HNO_3+H_2O_2(3+2)、HNO_3+HClO_4(3+0.5)和HNO_3+H_2SO_4(3+0.5)等3种样品消解方法在一些生物重要元素的同位素处产生的表观浓度。光谱法的检出限0.001～0.75mg/L;质谱法的检出限0.005～1.01μg/L。光谱法和质谱法的相对标准偏差分别是2.7％～12.8％和3.4％～24.8％。
A method for the analysis of mussel standard reference material by inductively coupled plasma atomic emission spectrometry( ICP-AES) and inductively coupled plasma mass spectrometry(ICP-MS) was developed. K、 Na、 Ca、 Mg、 P、Al、 Fe、 Zn、 Mn and Sr were determined by ICP-AES and As、B、 Cd、Co、Cr、Cu、Ga、Ge、Mn、Mo、 Ni、Pb、 Se、 Sr、coefficients at the55Mn、78Se、63Cu、,59Co、58Ni、60Ni、75As、71Se、originating from polyatomic ion of the matrix elements 39K16O、39K2、40Ar23Na、43Ca16O、42Ca16O、44Ca16O、40Ar12C were determined under the selected operation parameters. The major matrix elements, such as K, Na and Ca, result in the suppression of analytes signals. The apparent concentration at the significant biological element which was procuced by the different digestion methods,' HNO3 + H2O2 (3 + 2), HNO3 + HC104(3+ 0.5) and HNO3 + H2SO4(3 + 0.5), was determined. The sample digested by HNO3 + H2O2 did not give rise to interfere on the analyte, and the backgrounds of 77Se、69Ga、67Zn、75As、51V、53Cr and 52Cr were increased by HNO3 + HC104 digestion method, that affected the determination of these elements, especially the monoisotope As and V. Sample digested by HNO3 + H2SO4 increased the backgrounds at 65Cu、64Zn and 67Zn. Detection limits of ICP-AES are 0.001-0.75 mg/L and those of ICP-MS are 0.005-1.01μg/L. The relative standard derivations of ICP-AES and ICP-MS are 2.7%-12.8% , 3.4%-24.8%, respectively.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期504-508,共5页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金
国家教委留学归国基金资助课题
关键词
ICP
AES
测定
贻贝
标准物质
S Inductively coupled plasma atomic emission spectrometiy, inductively coupled plasma mass spectrometry, mussel standard reference material
