摘要
铝材表面通常采取一些化学方法处理如酸处理以达到提高材料的防护性和功能性、扩大应用范围和延长使用寿命。铝材表面处理后所产生的废水中含有较高浓度的H+和Al 3+,对二者含量进行有效监控,无论是在生产监控方面还是环境保护方面都具有很大意义。本文首次应用温度滴定方法对水溶液中的H+和Al 3+进行定量检测,并将该方法应用到铝厂实际废水的检测中。结果表明,此方法的测定值与理论值或常规的手动滴定法的测定值相符。方法的加标回收率:H+和Al 3+分别为99.8%和104.1%。精密度试验中H+和Al 3+测定结果的相对标准偏差(RSD,n=7)均小于2%。
The aluminum profile surface was usually treated by some chemical methods such as acid treatment to improve the protective property and functionality, enlarge the application range and prolong the use life. The wastewater generated in aluminum profile surface treatment contained high-concentration H^＋ and Al^3＋. Therefore, the effective monitoring of their content had important signifi cance whether in process control or environmental protection. In this study, the content of H^＋ and Al^3＋ in wastewater was quantitatively determined by thermometric titration in first time. This method was applied to the determination of actual wastewater from aluminum factory. The results showed that the found results of this method were consistent with the theoretical values or those obtained by conventional manual titration. The recoveries of method were 99.8 %and 104.1 % for H^＋ and A1^3＋ , respectively. The relative standard deviations （RSD, n=7） in precision test were both less than 2 % for H^＋ andAl^3＋.
出处
《冶金分析》
CAS
CSCD
北大核心
2012年第2期46-50,共5页
Metallurgical Analysis
关键词
温度滴定
废水
总酸度
铝离子
反应焓
thermometric titration
wastewater
total acidity
aluminum ion
reaction enthalpy
