引用本文:张婧婧,张昊,霍宗利.离子色谱-紫外检测法同时测定水中5种氯酚类化合物[J].环境监控与预警,2022,14(6):43-45
ZHANG Jing-jing, ZHANG Hao, HUO Zong-Li.The Simultaneous Determination of 5 Chlorophenols in Water Samples by Ion chromatography with UV Detection Method[J].Environmental Monitoring and Forewarning,2022,14(6):43-45
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离子色谱-紫外检测法同时测定水中5种氯酚类化合物
张婧婧,张昊,霍宗利
江苏省疾病预防控制中心,江苏 南京 210009
摘要:
建立了同时测定水中5种氯酚类化合物的离子色谱-紫外检测法。水样经0.45μm水相针式滤器过滤后,以250nm为检测波长,5%的氨水甲醇-1%的硫酸铵溶液(V∶V=80∶20)为流动相进行检测。结果表明,在2-氯酚质量浓度为 0.1~1.6 mg/L,其余4种氯酚质量浓度为0.01~0.16 mg/L范围内,线性相关系数均>0.999;2-氯酚和2,4-二氯酚的检出限分别为0.03和0.004 mg/L,其余3种氯酚的检出限为0.003 mg/L。低、中、高3种加标浓度样品的加标回收率为94.1%~100.8%,相对标准偏差(RSD)为2.5%~9.9%。该方法前处理简单,灵敏度、准确度和精密度均较好,适用于基层检测机构对生活饮用水中5种氯酚类化合物的日常快速检测。
关键词:  离子色谱-紫外检测法  氯酚类化合物  过滤
DOI:
分类号:X832
基金项目:江苏省青年医学人才基金资助项目(QNRC2016543)
The Simultaneous Determination of 5 Chlorophenols in Water Samples by Ion chromatography with UV Detection Method
ZHANG Jing-jing, ZHANG Hao, HUO Zong-Li
Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu 210009, China
Abstract:
An ion chromatography with UV detection method was established for simultaneous determination of 5 chlorophenols in water samples. The water sample was filtered through a 0.45 μm aqueous phase syringe filter, the detection wavelength was set by 250 nm, and the mobile phase was a mixed solution of 5% ammonia in methanol and 1% ammonium sulfate solution in a volume ratio of 80∶20. The results showed that when the concentration of 2 chlorophenol was in the range of 0.1~1.6 mg/L, and the other four chlorophenols in the range of 0.01~0.16 mg/L, the linear correlation coefficients were all greater than 0.999. The detection limits of 2 chlorophenol and 2,4 dichlorophenol were 0.03 and 0.004 mg/L respectively. The detection limit of the remaining three chlorophenols was 0.003 mg/L. The recovery rates of standard addition at low, medium and high concentration level were in the range of 94.1%~100.8%, with the relevant standard deviations (RSD) ranged from 2.5% to 9.9%. With simple pretreatment, the method showed high sensitivity, good accuracy and precision, is suitable for daily fast determination of five chlorophenol compounds in drinking water samples.
Key words:  Ion chromatography with UV detection method  Chlorophenols  Filter