摘要
研究了用气相色谱测定海水及天然水中溴离子含量的方法,确定了最佳条件。天然海水,稀释200倍后;取10ml稀释水样,用氯胺T为氧化剂,将Br-氧化为溴,在六次甲基四胺催化的条件下,溴与丁酮反应生成溴代丁酮;用环已烷萃取后,用ECD检测器测定。此方法简便快速,对溴离子含量较低的天然水尤为适用。方法与碘量法相对照,取得满意结果。
In this paper, a gas chromatographic method for the determination of bromide concentration in natural water and seawater was reported. Seawater sample was diluted 200 times with pure water. Chloramine-T as a oxidant was added into the diluted seawater sample to dissociate Br, which can react with butanone and produce bromobutanone. In this reaction, hexa-methy lenetetramine was used as a catalyst. Bromobutanone was extracted from the solution with cyclohexane and determined by ECD detector. Other natural water, such as riverwater and groundwater which contain trace bromide can be determined directly without diluting. This method was simple, convenient and fast. Experimental result, compared with volumetric analysis, was satisfactory. It is very applicable for determination of large batch of sample water.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1993年第4期414-419,共6页
Oceanologia Et Limnologia Sinica
基金
自选课题
关键词
海水
溴离子
气相色谱
Chromatography Seawater Bromide
