CAJ | 학술논문

报道酸性媒染紫(SVRS)-示波计时电位法测定天然水及饮用水中铝。在0.85mol/L NH3·H2ONH4 Cl-5×10-5mol/L SVRS(pH 8.8)底液中，Al-SVRS络合物在-1.05V电位处产生灵敏切口，切口深度与铝浓度成正比，可用于定量分析。线性范围为1×10-2～6×10-6mol/L,RSD为5.5％(n=10，2× 10-7mol/L)，检测限为5×10-8mol/L。本法特点为：在碱性条件下，无需加热，无需通氮除氧，无需预富集，大大减少了分析时间。仪器简单，方法灵敏准确，特别适用于天然水和饮料中Al的分析。对实际水样进行了分析，与ICP/AES法所测结果基本一致。
보도산성매염자(SVRS)-시파계시전위법측정천연수급음용수중려。재0.85mol/L NH3·H2ONH4 Cl-5×10-5mol/L SVRS(pH 8.8)저액중，Al-SVRS락합물재-1.05V전위처산생령민절구，절구심도여려농도성정비，가용우정량분석。선성범위위1×10-2～6×10-6mol/L,RSD위5.5％(n=10，2× 10-7mol/L)，검측한위5×10-8mol/L。본법특점위：재감성조건하，무수가열，무수통담제양，무수예부집，대대감소료분석시간。의기간단，방법령민준학，특별괄용우천연수화음료중Al적분석。대실제수양진행료분석，여ICP/AES법소측결과기본일치。
A simple and reliable electroanalytical method for the fast determination of aluminum in natural and drinking waters by a. c. oscillopolarography using solochrome violet RS(SVRS) is described. The alkaline buffer solution used was 0.85 mol/L NH3·H2O- NH4 Cl(pH 8.8) containing 5 × 10-5 mol/L SVRS. A sensitive incision due to the redox reaction of Al-SVRS complex adsorption wave on the Hg-film electrode was observed on the dE/dtE oscillogram at - 1.05 V. The incision depth was linearly proportional to the A1 concentration in the range of 1 ×10-7 ～6 × 10-6 mol/L. No serious interference was found. The detection limit of this method was 5 × 10-8 mol/L,and the relative standard deviation was 5.5% for 2 × 10-7 mol/L Al ( n = 10). This method was successfully applied to the determination Al in 22 real samples. The results were found to be in good agreement with those obtained by inductively coupled plasma-atomic emission spectrometry.