双通道离子色谱分析水中10种阴阳离子

【摘要】 实验采用的仪器为瑞士万通双通道离子色谱仪,搭载英蓝超滤系统和自动稀释技术,针对水中4种无机阴离子(F-,Cl-,NO₃^-,SO₄^2-)、6种阳离子(Li⁺,Na⁺,NH₄⁺,K⁺,Ca²⁺,Mg²⁺)进行检测。实验结果为:10种离子线性关系r>0.999 8,加标回收率95.2%～105%,相对标准偏差0.11%～1.49%。测定结果精密度高、准确性好、检出限低、灵敏度高且操作简便,样品可直接上样,无需过滤,适用于同时分析水中10种阴阳离子,值得推广。更多还原

【Abstract】 The instrument used in the experiment is the Swiss Wentong double-channel ion chromatograph,equipped with the inline ultrafiltration system and automatic dilution technology. Four kinds of inorganic anions(F-,Cl-,NO₃^-,SO₄^2-)and six kinds of cations(Li⁺,Na⁺,NH₄⁺,K⁺,Ca2+,Mg²⁺)in water are tested. The results showed that the linear relation r >0.999 8,standard recovery 95.2% ～105%,relative standard deviation（RSD）0.11% ～1.49%. The test results have high precision,good accuracy,low detection limit,high sensitivity,and simple operation. The sample can be directly loaded without filtering. It is suitable for analyzing the ten kinds of anions and anions in water at the same time.更多还原