摘要
利用离子色谱法对新乡市大气降水中的氟离子、氯离子、硝酸根和硫酸根4种离子同时进行测定。研究结果表明:该方法分析速度快,各阴离子组分分离效果好,未使用有毒试剂,环境友好;在一定线性范围内,相关系数均大于0.999 0。对4种阴离子的污染特征进行分析,发现新乡地区大气降水中的SO_4^(2-)和NO_3^-的质量浓度较大,这说明新乡地区大气中氮氧化物和二氧化硫污染程度较大。SO_4^(2-)/NO_3^-质量浓度比在0.5~3之间,故降水类型为混合型。
In this paper, a novel method was established to determine fluoride, chloride, nitrate and sulfate ions in atmospheric precipitation simultaneously by ion chromatography. The results showed that this method was eco-friendly and effective. No toxic reagent was used and the separating effect was better. In a certain linear range, the linear correlation coefficients of the four kinds of anion standard curves were all greater than 0.999 0. Meanwhile the pollution characteristics of the four anions were discussed. It was found that the concentrations of nitrate and sulfate ions in the atmospheric precipitation of Xinxiang area were large, which indicated this region was subjected to serious pollution by nitrogen oxide and sulfur dioxide.
出处
《新乡学院学报》
2016年第9期23-26,共4页
Journal of Xinxiang University
关键词
大气降水
离子色谱法
阴离子
污染特征
atmospheric precipitation
ion chromatography
anion
pollution characteristics
