離子色譜法在降水轉化和再循環(huán)背景下水體常見陰離子測定中的應用

打開文本圖片集

作者簡介 劉婉清（1988—），女，內蒙古赤峰人，中級工程師，主要從事應用氣象相關工作。

收稿日期 2023-06-30

Application of Ion Chromatography in Determination of Common Anions in Water under the Background of Precipitation Transformation and Recycling

Liu Wan-qing （Wuhai Meteorological Bureau， Wuhai， Inner Mongolia 016000）

Abstract Arsenic was a harmful element to human body. Anions such as arsenate and arsenite often exist in surface water， groundwater， lake sediments and soil farmland， bringing hidden dangers to human health and safety. How to prevent and control arsenic pollution stably and efficiently had always been a concern of scholars. Select the model ICS 90-A ion chromatograph as the research object， using 2 mmol NaOH + 2 mmol Na2CO3 as the mobile phase， 30.00% hydrogen peroxide as the oxidant， and determine the common anions such as arsenite and arsenite. According to the determination， the recovery rate of sample spike is 92.00%～107.20%， and the detection limit of the method was 0.0542 mg/L-1. This method has good linearity and can provide a theoretical basis for the determination of arsenic in water in the future.

Key words Precipitation conversion; Recirculation; Water pollution; Arsenate; Chromatography of ions

摘要 砷是一種對人體有害的元素，砷酸根及亞砷酸根等陰離子常存在于地表水、地下水、湖泊沉積物及土壤農田中，給人類健康安全帶來隱患，如何穩(wěn)定、高效地防治砷污染一直都是學者們較為關注的問題。（剩余4426字）