摘要
研究了2-[(5′-羧基-2′-砷酸基苯)偶氮]-1,8-二羟基-3,6-萘二磺酸(5-CarAsA-1)与硼的荧光性能。硼与试剂形成1:2的强荧光配合物,其λ_(ex)/λ_(em)=240nm/381nm,B(Ⅲ)量在0～0.16mg·L^(-1)范围内呈良好线性关系。方法检出限为2μg·L^(-1)。建立了测定缴量硼的新方法。方法应用于土壤中微量硼的测定,结果满意。
In this paper the fluorescent properties of 2-[(5'-carboxy-2'-arsono-phenyl)azo]-l,8-dihydroxy 3,6-naphthalenedisulfonic acid (R) and its complex with boron were studied. A complex of BR_2 is formed with λ_(ex)/ λ_(cm) = 240nm/381nm. A linear relationship between fluorescence intensity and concentration of boron was obstained over the range of 0~0. 16mg ·L^(-1) and the detection limit for B(Ⅱ) is 2μg ·L^(-1). The method was applied to determination of boron in soil and tea with satifactory results.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
1999年第5期193-194,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
荧光光度法
硼
土壤
测定
Fluoremetry, Boron, Soil, Tea, 2-[(5'-carboxy-2'-arsono-phenyl)zao]-l, 8-dihydroxy-3,6-naphthalenedisulfonic acid
