ICP-AES法快速测定卤水中的硫酸根

Rapid Determination of Sulfate in Brine by ICP-AES

中文关键词:  ICP-AES  卤水  SO_42-

英文关键词:ICP-AES  brine  SO42-

中文摘要:

      本文建立了电感耦合等离子体发射光谱(ICP-AES)法测定卤水中硫酸根含量的方法。该方法在S 182.034 nm处的检出限为0.0324 mg/L,线性范围为0.0324 -1000 mg/L。实验研究了卤水中常见共存离子对硫酸根测定的影响情况。经国家标准物质验证,结果与标准值相符。将该方法应用于实际卤水中硫酸根的测定,方法的相对标准偏差(RSD,n=11)小于2.2 %,加标回收率为98.1 %—104.4 %。将该方法的测定值与重量法的结果进行了对比,无明显系统偏差。

英文摘要:

      In this article a method for determination of sulfate in brine by inductively coupled plasma-atomic emission spectrometry(ICP-AES)was described. The detection limit and linear rang of the method for S 182.034 nm were 0.0324 mg/L and 0.0324 -1000 mg/L. The effects of common coexisting ions on the determination of sulfate were studied. The method was validated by analysis of a certified reference material,and the result was in agreement with the certified value. The method was applied to the determination of sulfate in brines, the relative standard deviations(RSD, n=11)were lower than 2.2 %, and the recoveries of sulfate were in range of 98.1 %—104.4 %。The determined values by the proposed method were compared with the results determined by the gravimetric method, there were no obvious systematic deviation.