间接火焰原子吸收光谱法测定水和废水中铝  

Determination of Aluminum in Water and Waste Water by Indirect Air-Acetylene Flame Atomic Absorption Spectrometry

作　　者：陆九韶[1] 覃东立[1] 孙大江[1] 艾桂艳[2] 孙义[3] 

机构地区：[1]中国水产科学研究院黑龙江水产研究所,哈尔滨150070 [2]中国科学院沈阳应用生态研究所,沈阳110016 [3]沈阳市环境保护局,沈阳110011

出　　处：《环境保护科学》2008年第3期111-113,共3页Environmental Protection Science

基　　金：黑龙江水产研究所基本科研业务费专项资助课题(2007HSYZX-ZH-25)

摘　　要：Al3+在一定酸度及1-(2-吡啶偶氮)-2-萘酚(PAN)存在的条件下,与Cu(Ⅱ)-EDTA发生定量交换反应,生成物Cu(Ⅱ)-PAN可被氯仿萃取,通过测定水相残余铜,从而间接测定铝。本文利用这一原理,进行了火焰原子吸收光谱法测定水和废水中铝的试验。结果表明,铝浓度在0.1~1.0 mg/L范围内有良好的线性关系,方法检测范围为0.05mg/L^100mg/L。本法用于不同加标水样中铝的测定,相对标准偏差为3.2%~7.2%,加标回收率为94%~106%。方法灵敏度高,精密度和准确度好,检测范围宽,检出限低,完全满足现行卫生标准对水体中铝检验的要求,且实验仪器普通易得,便于推广应用。Under the condition of there existing in certain acidity and PAN, quantify happened in Al^3＋ and Cu （ Ⅱ ） - EDTA exchanging reaction,resultant Cu （ Ⅱ ） - PAN may be extracted by the chloroform. By determining aqueous phase remains copper, indirect measure aluminum. Using of the principle,have built the flame atomic absorption spectrum following the method determining the Aluminum in water. Experimental results showed that the linear range of Aluminum was 0. 1 -1.0mg/1,method determine range was 0. 05-100mg/1 in water. The method has been used for the determination of Aluminum in kinds of environment water with 3. 2-7. 2% RSD, The recovery was 94%-106%. The experiment results show that this method has many advantages such as sensitive,accurate and so on and the device is recommendable.

关 键 词：间接 火焰原子吸收光谱 水 废水 铝 

分 类 号：O657.31[理学—分析化学] TG174.451[理学—化学]