离子色谱法测定不同地区家庭饮用井水中的阴、阳离子
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摘要
采用离子色谱法测定不同地区家庭饮用井水中氟离子、氯离子、硝酸根、硫酸根、钠离子、钾离子、镁离子和钙离子等8种阴、阳离子的含量。样品经IonPac AS11-HC型分离柱及IonPac AG11-HC型保护柱分离,以30mmol·L-1氢氧化钾溶液为淋洗液(阴离子分析);样品经IonPac CS12A型分离柱及IonPac CG12A型保护柱分离,以20 mmol·L-1甲基磺酸溶液为淋洗液(阳离子分析);采用电导检测器检测。8种离子在一定的质量浓度范围内与其峰面积呈线性关系,方法的检出限(3s)在0.002~0.034mg·L-1之间。对井水样品进行测定,测定值的相对标准偏差(n=6)在0.59%~2.0%之间。用标准加入法做方法的回收试验,计算得回收率在98.3%~109%之间。
IC was applied to the determination of 8anions and cations including F-,Cl-,NO3-,SO42-,Na+,K+,Mg2+and Ca2+in household drinking well water from different regions.IonPac AS11-HC separation column and IonPac AG11-HC protective column were used for separation and 30 mmol·L-1 KOH solution was used as eluent(for anion analysis);IonPac CS12 Aseparation column and IonPac CG12 A protective column were used for separation and 20 mmol·L-1 methanesulfonic acid solution was used as eluent(for cation analysis).Conductivity detection was adopted in the determination.Linear relationships between values of peak area and mass concentration of the 8ions were kept in definite ranges.Detection limits(3s)found were ranged from 0.002to0.034mg·L-1.Precision of the method was tested at the sample of well water,values of RSD′s(n=6)found was in the range of 0.59%-2.0%.Test for recovery was performed by standard addition method,giving recovery in the range of 98.3%-109%.
IC was applied to the determination of 8anions and cations including F-,Cl-,NO3-,SO42-,Na+,K+,Mg2+and Ca2+in household drinking well water from different regions.IonPac AS11-HC separation column and IonPac AG11-HC protective column were used for separation and 30 mmol·L-1 KOH solution was used as eluent(for anion analysis);IonPac CS12 Aseparation column and IonPac CG12 A protective column were used for separation and 20 mmol·L-1 methanesulfonic acid solution was used as eluent(for cation analysis).Conductivity detection was adopted in the determination.Linear relationships between values of peak area and mass concentration of the 8ions were kept in definite ranges.Detection limits(3s)found were ranged from 0.002to0.034mg·L-1.Precision of the method was tested at the sample of well water,values of RSD′s(n=6)found was in the range of 0.59%-2.0%.Test for recovery was performed by standard addition method,giving recovery in the range of 98.3%-109%.
引文
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[11]罗志彬,钟志雄,朱炳辉.离子色谱法测定净水产品中F-、Cl-、NO2-、NO3-、HPO42-和SO42-[J].化学分析计量,2011,20(1):45-47.
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[13]GB 5749-2006生活饮用水卫生标准[S].
[2]代荣,汪利军.去除地下水中的硝酸盐[J].城镇供水,2000(6):47-48.
[3]何宏,席倩.水的硬度与健康[J].饮料工业,1999,2(5):7-9.
[4]郑和辉,林少彬,井海宁,等.离子选择电极法和离子色谱法测定水中氟化物的比较[J].环境与健康杂志,2003,20(1):37-39.
[5]GB/T 5750.5-2006生活饮用水标准检验方法[S].
[6]张艳.硝酸汞容量法测定氯化物[J].中国公共卫生,2004,20(3):349-349.
[7]黄文锋,张骊,肖琳.离子色谱法测定饮用水中四种阴离子与传统化学法的比较[J].中国卫生检验杂志,2013,23(2):309-315.
[8]牟世芬,刘克纳,丁晓静.离子色谱方法及应用[M].北京:化学工业出版社,2005:4-6.
[9]郭莹莹,叶明立,施青红,等.离子色谱-抑制电导法分别测定海水中阴离子和阳离子[J].理化检验-化学分册,2006,42(3):185-188.
[10]史亚利,刘京生,蔡亚岐,等.文物附着物水浸取液中阴、阳离子的离子色谱法测定[J].分析测试学报,2005,24(2):57-60.
[11]罗志彬,钟志雄,朱炳辉.离子色谱法测定净水产品中F-、Cl-、NO2-、NO3-、HPO42-和SO42-[J].化学分析计量,2011,20(1):45-47.
[12]黄海,刘晓晶.离子色谱法测定水中钙和镁[J].理化检验-化学分册,2001,37(3):109-110.
[13]GB 5749-2006生活饮用水卫生标准[S].