摘要
采用离子色谱法测定农村饮用水中F-、Cl-、NO2-、Br-、NO3-和SO42-等6种阴离子的含量。水样经Ion Pac AG19保护柱及Ion Pac AS19分离柱分离,以20.00mmol·L-1氢氧化钾溶液为淋洗液,采用抑制电导器检测。F-、NO2-和Br-在4mg·L-1以内,Cl-、NO3-和SO42-在40mg·L-1以内呈线性关系,检出限(2S/N)在0.002～0.012mg·L-1之间。方法用于水样中6种阴离子的测定,加标回收率在98.0%～101.3%之间,相对标准偏差(n=6)在0.83%～2.7%之间。
Contents of 6 anions, including F^- , Cl^-, NO2^- , Br^- , NO3^- and SO4^2- , in rural drinking water were determined by ion chromatography. Ion Pac AG19 protective column and Ion Pac AS19 separation column were used for separation and 20.00 mmol · L ~ KOH solution was used as eluant. Inhibitory conductivity detection was adopted in the determination. Linearity for F , NO2 and Br was found to be in the same ranges within 4 mg · L^- 1, and linearity for C1-, NOa- and 804〉 was found in the same range within 40 mg · L^- 1, with detection limit （2S/N） in the range of 0. 002-0. 012 mg · L ^-. The proposed method was applied to the determination of the 6 anions in rural drinking water, values of recovery found by standard addition method were in the range of 98. 0%- 101.3%, and RSD＇s （n=6） were found in the range of 0. 83%-2. 7%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2012年第2期213-214,218,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
