机构地区: 陕西师范大学化学化工学院化学系
出 处: 《分析试验室》 1995年第3期30-32,共3页
摘 要: 建立了氟的铝-钙指示剂络合物荧光猝灭测定法。本法λ=570nm,λ_(em)=600nm,线性范围为5~160ng/mLF ̄-。对5ng/mIF ̄-重复11次测定结果的相对标准偏差为2.4%,可直接用于温泉水中氟的测定。 A fluoro-quenching method for the de-termination of fluoride with Al-calconcar-boxylic acid complex is established.Theλ_(ex) andλ_(em) are 570nm and 600nm。The linearrange is 5~160ng/mL F ̄-, DL=3.8ng/mL。The RSD is 2.4%(11 measurements of 5ng/mL F ̄-).The method has been directly usedto determine fluoride in hot spring water.