期刊论文

中文

中国卫生检验杂志

1004-8685

2006

16

7

790-791,799

10.3969/j.issn.1004-8685.2006.07.010

本校为第一机构

目的:建立测定痕量亚硝酸根的新方法。方法:基于硫酸介质中,亚硝酸根催化溴酸钾氧化健那绿的反应,使其与十二烷基苯磺酸钠缔合的共振光散射强度减弱,据此建立了催化共振光散射分析法测定亚硝酸根的新方法。结果:方法的线性范围为0.8341.67 ng/m l,检出限0.70 ng/m l。RSD为1.32%、1.24%,样品加标回收率为96.1%103.9%。结论:该方法简便快速,常见物质干扰小,用于环境水样痕量的亚硝酸根测定,结果满意。

Objective：To develop a simple and sensitive method for the determination of trace nitrite in water samples of environment. Methods： Based on the catalytic effect of nitrite for the oxidation of JGB by potassium bromate in sulphuric acid medium, which resulted in the decrease of RLS of ion - association complex, a catalytic resonance light scattering method was proposed for the determination of trace nitrite with surfactant as the sensitizer. Results： The determination limit and the linear range for NO2^- were 0. 70 ng/ml and 0. 83 - 41.7 ng/...