OALib Journal期刊
ISSN: 2333-9721
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电厂水汽中微量氨含量测定方法研究
, PP. 135-137
Keywords: 氨气敏电极法,铵离子选择性电极法,纳氏试剂光度法,电厂水汽,氨,联氨
Abstract:
采用氨气敏电极法、铵离子选择性电极法和纳氏试剂光度法对电厂水汽中的微量氨含量进行了对比测定,考察电极法测量的准确度与精密度,以及联氨对氨气敏电极法测量准确性的影响。结果表明:标准水样中氨含量在0~3.0mg/l范围内,2种电极法测定的相对标准偏差均小于0.5%,测量电厂实际水样与纳氏试剂光度法的偏差均为±0.05mg/l,说明2种电极法测定水汽中氨含量具有较高的精度及准确度;水汽中微量的联氨不会对氨气敏电极电位法的测量准确性产生影响;氨气敏电极法操作简单、干扰因素少、准确度高,可推广应用于电厂日常水汽监督工作中。
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