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中国无机分析化学:2021,11(2):9-14
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离子色谱法测定南京市道路灰尘中的四种无机阴离子
周悦, 周曼菲, 沈禹, 如柯耶?居麦, 曹修玉, 蔡越, 高蓉, 余静
(南京医科大学)
Determination of Four Inorganic Anions in Road Dust in Nanjing by Ion Chromatography
ZHOU Yue, ZHOU Man Fei, SHEN Yu, RU Ke Ye?Ju Mai, CAO Xiu Yu, CAI Yue, GAO Rong, Yujing
(Nanjing Medical University)
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投稿时间:2020-07-09    修订日期:2020-09-11
中文摘要: 采用离子色谱法测定南京市道路灰尘中无机阴离子F-,Cl-,SO42-,NO3-的含量。道路灰尘样品过100目筛,经3次涡旋离心提取,再取上清液高速离心,0.22 μm滤膜过滤后上离子色谱分析。离心后的样品经IonPacTMAS 11-HC(250 mm×4 mm)色谱柱分离,以25 mmol/L NaOH溶液为淋洗液,采用电导检测器检测。4种阴离子均具有较宽的线性范围(0.01~0.2 mg/L),其线性相关系数r≥0.999。样品的加标回收率在87.4%~95.2%,仪器相对标准偏差(RSD)均≤3.5%,方法相对标准偏差(RSD)均≤7.7%。本方法具有分析速度快,精密度好等优点,可用于评价南京市城区道路灰尘中的四种无机阴离子水平。
Abstract:F-, Cl-, SO42-, NO3- in road dust of Nanjing City were determined by ion chromatography. Samples were allowed to be analyzed by ion chromatography after passing through a 100 mesh sieve, extracting by vortex centrifugation three times,taking the supernatant by high-speed centrifugation and filtering by a 0.22 μm filter membrane. Samples after centrifugation were separated with IonPacTMAS 11-HC(250 mm×4 mm)chromatographic column. 25 mmol/L NaOH was selected as mobile phase and conductivity detector was adopted as the detection sensor. For 4 anions, the method showed good linearity over a wide analysis range (0.01-0.2 mg/L) with correlation coefficients greater than 0.999. The addition recoveries were in the range of between 87.4%~95.2%. This method provides as fast analysis speed and good precision. It is suitable for evaluating the levels of four inorganic anions in road dust of Nanjing urban area.
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基金项目:江苏省大学生创新创业训练计划省级重点项目(201910312005Z)
引用文本:
周悦,周曼菲,沈禹,如柯耶•居麦,曹修玉,蔡越,高蓉,余静.离子色谱法测定南京市道路灰尘中的四种无机阴离子[J].中国无机分析化学,2021,11(2):9-14.
ZHOU Yue,ZHOU Man Fei,SHEN Yu,RU Ke Ye•Ju Mai,CAO Xiu Yu,CAI Yue,GAO Rong,Yujing.Determination of Four Inorganic Anions in Road Dust in Nanjing by Ion Chromatography[J].Chinese Journal of Inorganic Analytical Chemistry,2021,11(2):9-14.

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