CAJ | 학술논문

研究了在盐酸介质中,V(Ⅴ)- I~--十六烷基三甲基溴化铵(CTMAB)离子缔合物的共振散射光谱.实验发现,当有V(Ⅴ)存在时,V(Ⅴ)与过量的I-反应生成I_3~-,I_3~-与CTMAB形成离子缔合物微粒(CTMAB+·I_3~-)n,使I~--CTMAB溶液的共振光散射强度显著增加.在波长563 nm处,共振散射光强度最大且光散射强度与钒浓度在2～60 ng/mL范围内呈正比,据此建立了测定环境样品中痕量钒的共振散射光谱分析新方法,方法检出限为0.66 ng/mL.用拟定的方法测定环境样品中微量钒,相对标准偏差小于7.5%,回收率在97.8%～102.4%.
연구료재염산개질중,V(Ⅴ)- I~--십륙완기삼갑기추화안(CTMAB)리자체합물적공진산사광보.실험발현,당유V(Ⅴ)존재시,V(Ⅴ)여과량적I-반응생성I_3~-,I_3~-여CTMAB형성리자체합물미립(CTMAB+·I_3~-)n,사I~--CTMAB용액적공진광산사강도현저증가.재파장563 nm처,공진산사광강도최대차광산사강도여범농도재2～60 ng/mL범위내정정비,거차건립료측정배경양품중흔량범적공진산사광보분석신방법,방법검출한위0.66 ng/mL.용의정적방법측정배경양품중미량범,상대표준편차소우7.5%,회수솔재97.8%～102.4%.
The resonance light scattering (RLS) spectrum of the V(Ⅴ) -I--cetyltrimethyl ammoniun bromide (CTMAB) ion association complex was studied in hydrochloride acid medium. V(Ⅴ) reacted with I~-to form I_3~-, and funther combined with CTMAB to form an ion association particle(CTMAB~+·I_3~-)_n, which increased the intensity of resonance ligth scattering significantly. The RLS signal reached to the highest intensity at the wavelength of 563 nm, and the intensity was proportional to the concentration of V(Ⅴ) in range of 2～60 ng/mL. And a new resonance light scattering spectral method was established for the determination of trace V(Ⅴ) in environmental samples. The detection limit of the method was 0.66 ng/mL. The proposed method has been used for the determination of vanadium in enviromental samples with relative standard deviation less than 7.5% and recovery of 97.8%～102.4%.