摘要
研究了硫酸介质中，CTMAB存在下，亚硝酸根氧化1，5-二（2-羟基-5-溴苯）-3-氰基甲月替（HBPCF）褪色反应，据此建立了测定微量亚硝酸根的新方法。λmax=520nm，表观摩尔吸光系数为3.1 × 10^4 L·mol^- 1·cm^- 1，线性范围为0～2．1μg／mL。用于水样中亚硝酸根的测定，结果满意。
The decolour reaction of HBPCF by oxidation of nitrite in the suffufic acid medium in the presence of CTMAB, a new discoloring spectrophotolnetric method for determination of trace nitrite was reported. λmax = 520 nm, the apparent molar absorption coefficient is 3.1 × 10^4 L·mol^- 1·cm^- 1, the linear range for deterruination of nitrite is 0 - 2.1 μg/mL. The method was applied to the determination of trace nitrite in water with satisfactory results.
出处
《广东微量元素科学》
CAS
2006年第6期53-55,共3页
Trace Elements Science
