CAJ | 학술논문

在碱性介质及溴化十六烷基吡啶存在条件下，盐酸羟胺与 Fe(Ⅲ)–紫尿酸体系发生显色反应形成离子缔合物，该离子缔合物在635 nm 波长处有一个吸收峰，其表观摩尔吸光系数ε=2.05×104 L／(mol · cm)，据此建立了测定盐酸羟胺的间接分光光度法。盐酸羟胺的质量浓度在0～2.4 mg／L 范围内与吸光度与呈良好的线性，线性相关系数 r=0.9998，方法的检出限为0.01 mg／L。将该方法用于盐酸羟胺的测定，其测定结果与国标法测定结果相吻合，加标回收率为95.0%～104.0%，测定结果的相对标准偏差为0.51%～1.29%(n=5)。该方法灵敏度高，操作简便，可用于盐酸羟胺含量测定。
재감성개질급추화십륙완기필정존재조건하，염산간알여 Fe(Ⅲ)–자뇨산체계발생현색반응형성리자체합물，해리자체합물재635 nm 파장처유일개흡수봉，기표관마이흡광계수ε=2.05×104 L／(mol · cm)，거차건립료측정염산간알적간접분광광도법。염산간알적질량농도재0～2.4 mg／L 범위내여흡광도여정량호적선성，선성상관계수 r=0.9998，방법적검출한위0.01 mg／L。장해방법용우염산간알적측정，기측정결과여국표법측정결과상문합，가표회수솔위95.0%～104.0%，측정결과적상대표준편차위0.51%～1.29%(n=5)。해방법령민도고，조작간편，가용우염산간알함량측정。
In the presence of alkaline medium and cetylpyridinium bromide, hydroxylamine hydrochloride reacted with violuric acid–Fe( Ⅲ ) system to form ionic association. The ionic association had an absorption peak at the wavelength of 635 nm,and the apparent molar absorptivity was 2.05×104 L/(mol · cm). On the basis of it, indirect spectrophotometric method for the determination of hydroxylamine hydrochloride was established. In the range of 0~2.4 mg/L, the concentration of hydroxylamine hydrochloride was linear with absorbance with correlation coefficient of 0.999 8. The proposed method was used for determining content of hydroxylamine hydrochloride samples, and the results were consistent with those detected by the national standard method. The standard addition recoveries ranged form 95.0% to 104.0% with relative standard deviations of 0.51%–1.29% (n=5). The method has the advantages of high sensitivity,simple operation,it can be used for the determination of hydroxylamine hydrochloride.