职业与健康 ›› 2026, Vol. 42 ›› Issue (13): 1763-1767.

• 论著—实验·监测与检验 • 上一篇    下一篇

饮用水中2种阴离子及3种消毒副产物的碳酸根体系-离子色谱同时测定法

王莉容, 邓雪, 何艳, 谢娟, 姚金澈   

  1. 成都市郫都区疾病预防控制中心四川 成都 611730
  • 收稿日期:2025-02-12 修回日期:2025-09-05 出版日期:2026-07-01 发布日期:2026-07-14
  • 作者简介:王莉容,女,主管技师,主要从事理化检验工作。

Simultaneous determination of two anions and three disinfection by-products in drinking water using carbonate system-ion chromatography method

WANG Lirong, DENG Xue, HE Yan, XIE Juan, YAO Jinche   

  1. Chengdu Pidu District Center for Disease Control and PreventionChengduSichuan 611730, China
  • Received:2025-02-12 Revised:2025-09-05 Online:2026-07-01 Published:2026-07-14

摘要:

目的 建立同时测定饮用水中2种阴离子(F-、NO3-)及3种消毒副产物(二氯乙酸、三氯乙酸、氯酸盐)的碳酸根体系-离子色谱法,为检测生活饮用水中阴离子和消毒副产物提供技术参考。方法 被测水样经英蓝超滤自动进样,3.6 mmol/L碳酸盐+10%甲醇等度洗脱,经阴离子色谱柱分离,电导检测器检测。结果 2种阴离子及3种消毒副产物峰面积及浓度呈现良好的线性关系(均R2>0.999)。氟化物、硝酸盐、二氯乙酸、氯酸盐和三氯乙酸的检出限分别为2.1、1.3、2.5、1.6和4.4 μg/L,定量限为7.1、4.5、8.4、5.5和14.8 μg/L。对低、中、高浓度的加标水样进行测定,测得加标回收率为86.2%~110.3%,且所有样品相对标准偏差(relative standard deviation,RSD)均<7%,精密度范围为0.18%~3.83%。结论 该方法操作简便快捷、结果准确可靠,可同时测定饮用水中2种阴离子(F-,NO3-)及3种消毒副产物(二氯乙酸、三氯乙酸、氯酸盐)。

关键词: 离子色谱, 生活饮用水, 消毒副产物, 阴离子

Abstract:

Objective To establish a carbonate system-ion chromatography method for the simultaneous determination of two anions(F-,NO3-) and three disinfection by-products(dichloroacetic acid,trichloroacetic acid,chlorate) in drinking water,so as to provide a technical reference for the detection of anions and disinfection by-products in drinking water. Methods The water samples were automatically injected by Inline ultrafiltration,eluted isocratically with 3.6 mmol/L carbonate + 10% methanol,separated by anion chromatography column,and detected by conductivity detector. Results The peak area and concentration of 2 anions and 3 disinfection by-products showed good linear relationships(allR2>0.999). The detection limits of fluoride,nitrate,dichloroacetic acid,chlorate,and trichloroacetic acid were 2.1,1.3,2.5,1.6 and 4.4 μg/L,respectively,and the quantitation limits were 7.1,4.5, 8.4,5.5 and 14.8 μg/L,respectively. The spiked water samples with low,medium and high concentrations were measured,and the spiked recovery rate was 86.2% to 110.3%,and the relative standard deviation(RSD) of all samples were<7%,and the precision range was 0.18% to 3.83%. Conclusion This method is simple and fast to operate,the results are accurate and reliable,and can simultaneously determine two anions(F-,NO3-) and three disinfection by-products(dichloroacetic acid,trichloroacetic acid,chlorate) in drinking water.

Key words: Ion chromatography, Drinking water, Disinfection by-products, Anion

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