摘要
以TINO_3作重原子微扰剂,Na_2SO_3作化学除氧剂,在无需加入任何保护介质条件下,仅需仪器光源适当照射,1-氨基4-萘磺酸盐、1-氨基5-萘磺酸盐、2-氨基1-萘磺酸盐水溶液均能产生强而稳定的室温燐光信号(RTP)。3种氨基萘磺酸盐浓度分别在4.0×10^(-8)～1.2×10^(-5)mol/L;1.2×10^(-6)～1.6×10^(-5)mol/L;1.6×10^(-7)～8.0×10^(-6)和8.0×10^(-6)～2.5×10^(-5)mol/L范围内与RTP信号呈良好线性关系。检出限分别为3.8×10~(-9_、1.4×10^(-7)和2.8×10^(-8) mol/L。1-氨基 7-萘磺酸盐和1-氨基 8-萘磺酸盐在相同条件下则不能产生RIP信号,表明取代基位置对RTP发射有重要影响。
Non-protected fluid room temperature phosphorescence (NP-RTP) properties of differentsubstituent position of naphthylmine sulfonate have been studied. A strong and stable NP-RTP signal of 1-naphthylamine-4-sulfonate ( 1, 4-ANS ), l-naphthylamine-5-sulfonate ( 1, 5-ANS ) , 2-naphtylamine-1-sulfonate(2,l-ANS) aqueous solution can only be induced by using Na2SO3 as deoxidization, TINO3 as heavy atom perturber, and irradiating the solution for short time with apparatus light source. The RTF intensity is linear to 1,4-ANS, 1,5-ANS, 2,1-ANS concentration in the range of 4.0 ×10^(-7)- 1.2×10^(-5) mol/L,1.2×10^(-6)-1.6×1.6×10^(-5)mol/L and 1.6×10^(-7)-8.0×10^(-6) or 8.0×10^(-6)-2.5×10^(-5) mol/L, the detection limit is 3.8×10^(-9)1 .4×10^(-7) and 2.8×10^(-8) mol/L respectively. Under the same conditions, l-naphdiylamine-7-sulfonate and l-naphthyiamine-8-sulfonate can not emit RTF signal. The results show that the position of substituent has important effect on RTP emitting.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期509-512,共4页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金资助项目(29775013)
关键词
无保护流体室温燐光
氨基萘磺酸盐
取代基效应
Non-protected fluid room temperature phosphorescence, naphthyiamine sultonate, substituent effect
