同时测定污水中NO_3-和NO_2-的方法研究  

Study on Techniques for Simultaneous Measurement of NO_3- and NO_2- in Waste Water

作　　者：侯德霞[1] 李正烨[1] 王梅[1] 李忠梅[1] 沈烽[1] 蔡爱斌[1] 

机构地区：[1]中国石化股份有限公司中原油田分公司,河南濮阳454532

出　　处：《石油化工腐蚀与防护》2004年第4期12-15,共4页Corrosion & Protection In Petrochemical Industry

摘　　要：研究了用紫外双波长一阶导数光谱法同时测定污水中NO3 -和NO2 -的实验条件及仪器参数。NO3 -在 0～ 2 .0mg/L范围内具有线性关系 ,检出限为 0 .6ng/mL ;NO2 -在 0～ 6 .0mg/L范围内具有线性关系 ,检出限为 0 .9ng/mL。用该法对纯水进行加标回收实验 ,回收率为 95 %～ 10 5 %。该分析方法在消除干拢方面尚未找到有效的办法 ,有待于进一步研究。The testing conditions and instrument parameters for simultaneously measuring NO_3- and NO_2- by ultrared double wave length-spectrum technique are studied. The linearity exists when NO_3- is 0～2.0 mg/L and the measurement limit is 0.6 ng/mL, while the linearity exists when NO_2- is 0～6.0 mg/L and the measurement limit is 0.9 ng/mL. When this method is applied in the clean water recovery test, the recovery rate is 95%～105%. Further research is needed to find a better solution to minimize the impact of other disturbing factors.

关 键 词：污水 紫外双波长一阶导数光谱法 检出限 加标回收实验 

分 类 号：X703[环境科学与工程—环境工程]