摘要
研究了二乙氨基对苯胺与硫化物形成乙基硫堇的显色反应,十二烷基磺酸钠可提高测定S2-的灵敏度。该缔合物在675nm处有最大吸收,摩尔吸光系数为4.25×104L·mol-1·cm-1,S2-测定的线性范围为0~0.8μg/mL。该方法用于天然水中微量硫化物的测定,结果满意。
The color reaction of sulfide with p-diethylamino phenylamine to form ethyl thionine has been studied. The addition sodium dodecyl sulfonate could enhance the sensitivity of the reaction. The maximum absorption of the association compound was at 675 nm and the molar absorptivity was 4.25×10~4 L·mol^(-1)·cm^(-1). The Beer's law was obeyed in the range of 0~0.8 μg/mL. The present method has been applied to the determination of sulfide in natural water with satisfactory results.
出处
《分析科学学报》
CAS
CSCD
北大核心
2003年第6期558-560,共3页
Journal of Analytical Science