摘要
在pH 10的氨水-氯化铵缓冲溶液中,在聚乙二醇辛基苯基醚(OP-10)微乳液存在下,1,5-二(2-羟基-5-氯苯)-3-氰基甲月替(HCPCF)与锰形成稳定的络合物,据此建立了测定锰的分光光度法。实验表明,锰?含量在0～1.0mg/L范围内符合比尔定律,线性回归方程为A=0.002 8+0.006 9ρ,相关系数为0.997 9,表观摩尔吸光系数为6.7×104 L.mol-1.cm-1。方法用于水中锰的测定,测得结果与原子吸收光谱法相符合,相对标准偏差(n=6)为1.3%～2.0%,加标回收率为98%～103%。
In ammonia-ammonium chloride buffer solution at pH 10,1,5-bi（2-hydroxy-5-chlorobenzene）-3-cyanoformazane（HCPCF）could react with manganese to form a stable complex in presence of polyethylene glycol octylphenol ether（OP-10）microemulsion.Based on this,a method for determination of manganese was established by spectrophotometry.The results showed that,Beer’s law was obeyed for manganese？in the range of 0-1.0mg/L.The linear regression equation was A=0.002 8＋ 0.006 9ρwith correlation coefficient of 0.997 9.The apparent molar absorptivity was 6.7×10^4 L.mol-1.cm-1.The proposed method was applied to the determination of manganese in water,and the results were consistent with those obtained by atomic absorption spectrometry.The relative standard deviation（n=6）was 1.3%-2.0%.The recoveries were between 98%and 103%.
出处
《冶金分析》
CAS
CSCD
北大核心
2013年第6期56-58,共3页
Metallurgical Analysis
