主次双波长新光度法测水体中的二硝基氯苯

本文通过对二硝基氯苯与吡啶生成的紫红色化合物光谱的研究，从而导出了主次双波长对二硝基氯苯进行定量测定的数学模型，二硝基氯苯在０～５０μｇ／２５ｍＬ范围内计算参数（Ｙ）与二硝基氯苯浓度（ｘ）呈良好的幂函数关系。由此对环境水体中微量二硝基氯苯进行了测定，方法的最低检出限为０．７μｇ，相对标准偏差ＲＳＤ≤２．７％，加标回收率９９．２％～１０１．０％。

Determination of 2,4-Dinitrochlorobenzene in Environmental Water by Primary-Secondary Wavelengths New Spectrophotometry

In basic solution, dinitrochlorobenzene may react on pyridine to form a purplish red compound. In this paper with the absorption property of a suspended liquid against light a new analytical method as primary-secondary wavelengths spectrophotometry was studied to determine trace dinitrochlorobenzene in environmental water. In 0-50 microg dinitrochlorobenzene/25 mL, the calculation curve is very stable and hardly affected by environment conditions. Experiments for practical waters have shown that the detection limit was 0.7 microg/25 mL dinitrochlorobenzene and RSD < or = 2.7% and the recovery rate was 99.2%-101.0%.