基于离子色谱法的水质一体化检测技术研究
Research on Ion Chromatography-based Integrated Water Quality Indicators Technology
郑瑜1
作者信息
- 1. 莆田市水质检测有限公司,福建 莆田 351100
- 折叠
摘要
本研究报道了一种水质一体化检测的技术,该技术运用了离子色谱技术,能够一次性鉴别并量化水中的5种关键阴离子——包括高氯酸盐、氟化物、氯化物、硝酸盐及硫酸盐,同时亦能精确捕捉 5 种常见的消毒副产物——溴酸盐、亚氯酸盐、氯酸盐、二氯乙酸及三氯乙酸,此外,还具备检测环境污染物草甘膦的能力,总计覆盖了 11 种重要化学物质.以氢氧化钾(KOH)溶液为淋洗液进行梯度洗脱,在流速1 mL·min-1,柱温25℃,进样量500 μL的条件下,约45 min内实现所有被测化学物质分离.11种化学物质分离度良好,相关系数均≥0.999,方法检出限为0.4 μg·L-1～30.9 μg·L-1.加标实验结果表明,11种化学物质的平均回收率范围为94.25%～105.76%,相对标准偏差0.08%～4.94%.这一创新方法不仅提升了水质监测的效率与准确性,还为保障饮用水安全提供了强有力的技术支持.
Abstract
An efficient method using ion chromatography has been developed for the simultaneous determination of 11 types of chemicals in drinking water,including 5 types of anions(perchlorate,fluoride,chloride,nitrate,sulfate),5 types of disinfection by-products(bromate,chlorite,chlorate,dichloroacetic acid,trichloroacetic acid),and glyphosate.Gradient elution was performed using potassium hydroxide(KOH)solution as the eluent.Under the conditions of a flow rate of 1 mL·min-1,column temperature of 25℃,and injection volume of 500 μL,all chemicals tested were separated in about 45 minutes.The separation degree of 11 types of chemical substances is good,and the correlation coefficients are with a value of 0.999 or above.The lower and upper limits of detection for this method range from 0.4 μg·L-1 to 30.9 μg·L-1.The results of the spiked experiment showed that the average recovery rate of the 11 types of chemical substances ranged from 94.25%to 105.76%,with a relative standard deviation of 0.08%to 4.94%.This innovative approach not only improves the efficiency and accuracy of water quality monitoring,but also provides strong technical support for safeguarding the safety of drinking water.
关键词
水质一体化检测技术/离子色谱法/梯度洗脱/水质监测Key words
Integrated detection technology of water quality/ion chromatography/gradient elution/water quality monitoring引用本文复制引用
出版年
2024
NETL
NSTL
万方数据