摘要
丁香醛连氮测定饮水中余氯，具有试剂稳定，便于贮存，对人体无毒害作用，方法简便，试剂消耗量低等特点。对游离氯的特异性强，干扰少，还能分步测定总余氯及结合氯。方法选定最佳的试样试剂加入步骤及试样与试剂的体积比，灵敏度提高，最低检出浓度可达０．０３ｍｇ／Ｌ，克分子消光系数为２．６６×１０￣４。线性规律好，可进行分光光度测定，其标准工作曲线的相关系数达０．９９９以上。重现性好，０．５ｍｇ／Ｌ游离氯测定的变异系数仅为５．８５％。
he characteristics of syringaldazine method for determining
residualchlorine in drinking water are as following: the reagent is stable on stor-age,harmless
and cheap;the procedure is simple and convenient;andthe reaction with free available chlorine
is specific and less interfered.Moreover,the total residual chlorine can be determined
separately.Thesensitivity of this method was very high with an optimal procedure andvolume
ratio of the test sample and reagent and the minimum detectableconcentration was as low as 0.
03mg/L.The specific extinction coefficientwas 2.66×10￣4.The linear law and reappearance
were satisfactory so thatthe spectrophotonietry could be carried out The correlation coefficient
ofstandard working curve of this method was up to 0.999 and the variationcoefficient for
determination of 0.5mg/Lfree chlorine was 5.85%.
出处
《解放军预防医学杂志》
CAS
北大核心
1994年第3期174-178,共5页
Journal of Preventive Medicine of Chinese People's Liberation Army
关键词
丁香醛连氮
氯
饮用水
Syringaldazine,residual chlorine,
drinking water
